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drivers/usb/gadget/legacy/Kconfig creates a 'choice' inside another
'choice'.
The outer choice: line 17 "USB Gadget precomposed configurations"
The inner choice: line 484 "EHCI Debug Device mode"
I wondered why the whole legacy gadget drivers reside in such a big
choice block.
This dates back to 2003, "[PATCH] USB: fix for multiple definition of
`usb_gadget_get_string'". [1]
At that time, the global function, usb_gadget_get_string(), was linked
into multiple drivers. That was why only one driver was able to become
built-in at the same time.
Later, commit a84d9e5361bc ("usb: gadget: start with libcomposite")
moved usb_gadget_get_string() to a separate module, libcomposite.ko
instead of including usbstring.c from multiple modules.
More and more refactoring was done, and after commit 1bcce939478f
("usb: gadget: multi: convert to new interface of f_mass_storage"),
you can link multiple gadget drivers into vmlinux without causing
multiple definition error.
This is the only user of the nested choice structure ever. Removing
this mess will make some Kconfig cleanups possible.
[1]: https://git.kernel.org/pub/scm/linux/kernel/git/history/history.git/commit/?id=fee4cf49a81381e072c063571d1aadbb29207408
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Acked-by: Felipe Balbi <balbi@kernel.org>
Link: https://lore.kernel.org/r/20200315154948.26569-1-masahiroy@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next
Felipe writes:
USB: changes for v5.7 merge window
Lots of changes on dwc3 this time, most of them from Thinh fixing a
bunch of really old mishaps on the driver.
DWC2 got support for STM32MP15 and a couple RockChip SoCs while DWC3
learned about Amlogic A1 family.
Apart from these, we have a few spelling fixes and other minor
non-critical fixes all over the place.
Signed-off-by: Felipe Balbi <balbi@kernel.org>
* tag 'usb-for-v5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb: (41 commits)
dt-bindings: usb: add documentation for aspeed usb-vhub
ARM: dts: aspeed-g4: add vhub port and endpoint properties
ARM: dts: aspeed-g5: add vhub port and endpoint properties
ARM: dts: aspeed-g6: add usb functions
usb: gadget: aspeed: add ast2600 vhub support
usb: gadget: aspeed: read vhub properties from device tree
usb: gadget: aspeed: support per-vhub usb descriptors
usb: gadget: f_phonet: Replace zero-length array with flexible-array member
usb: gadget: composite: Inform controller driver of self-powered
usb: gadget: amd5536udc: fix spelling mistake "reserverd" -> "reserved"
udc: s3c-hsudc: Silence warning about supplies during deferred probe
usb: dwc2: Silence warning about supplies during deferred probe
dt-bindings: usb: dwc2: add compatible property for rk3368 usb
dt-bindings: usb: dwc2: add compatible property for rk3328 usb
usb: gadget: add raw-gadget interface
usb: dwc2: Implement set_selfpowered()
usb: dwc3: qcom: Replace <linux/clk-provider.h> by <linux/of_clk.h>
usb: dwc3: core: don't do suspend for device mode if already suspended
usb: dwc3: Rework resets initialization to be more flexible
usb: dwc3: Rework clock initialization to be more flexible
...
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USB Raw Gadget is a kernel module that provides a userspace interface for
the USB Gadget subsystem. Essentially it allows to emulate USB devices
from userspace. Enabled with CONFIG_USB_RAW_GADGET. Raw Gadget is
currently a strictly debugging feature and shouldn't be used in
production.
Raw Gadget is similar to GadgetFS, but provides a more low-level and
direct access to the USB Gadget layer for the userspace. The key
differences are:
1. Every USB request is passed to the userspace to get a response, while
GadgetFS responds to some USB requests internally based on the provided
descriptors. However note, that the UDC driver might respond to some
requests on its own and never forward them to the Gadget layer.
2. GadgetFS performs some sanity checks on the provided USB descriptors,
while Raw Gadget allows you to provide arbitrary data as responses to
USB requests.
3. Raw Gadget provides a way to select a UDC device/driver to bind to,
while GadgetFS currently binds to the first available UDC.
4. Raw Gadget uses predictable endpoint names (handles) across different
UDCs (as long as UDCs have enough endpoints of each required transfer
type).
5. Raw Gadget has ioctl-based interface instead of a filesystem-based one.
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
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device_driver name is const char pointer, so it not useful to cast
shortname (which is already const char).
Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
Link: https://lore.kernel.org/r/1582054383-35760-3-git-send-email-clabbe@baylibre.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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usb_composite_driver name is const char pointer, so it not useful to cast
longname (which is already const char).
Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
Link: https://lore.kernel.org/r/1582054383-35760-2-git-send-email-clabbe@baylibre.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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These interfaces do support super-speed so let's not
limit maximum speed to high-speed.
Cc: <stable@vger.kernel.org>
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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drivers/usb/gadget/Kconfig includes drivers/usb/gadget/legacy/Kconfig
inside the 'choice' block. The current Kconfig allows this, but I'd
like to discourage this usage.
People tend to mess up the structure without noticing that entire
drivers/usb/gadget/legacy/Kconfig is placed in the choice context.
In fact, legacy/Kconfig mixes up bool and tristate in the choice,
and creates nested choice, etc.
This commit does not change the behavior, but it will help people
notice how badly this Kconfig file is written.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Link: https://lore.kernel.org/r/20191211073857.16780-1-masahiroy@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Adjust indentation from spaces to tab (+optional two spaces) as in
coding style with command like:
$ sed -e 's/^ /\t/' -i */Kconfig
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://lore.kernel.org/r/20191121132905.29248-1-krzk@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next
Felipe writes:
USB: changes for v5.5
We have TI's glue layer for the Cadence USB3 controller going
upstream. Tegra's XUDC driver is also going upstream with this pull
request.
Apart from these two big features, we have a bunch of patches switching
over to devm_platform_ioremap_resource() in order to simplify code a
little; and a non-critical fix for DWC3 usage via kexec.
* tag 'usb-for-v5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb: (44 commits)
usb: dwc3: of-simple: add a shutdown
usb: cdns3: Add TI specific wrapper driver
dt-bindings: usb: Add binding for the TI wrapper for Cadence USB3 controller
usb: mtu3: fix race condition about delayed_status
usb: gadget: Add UDC driver for tegra XUSB device mode controller
usb: dwc3: debug: Remove newline printout
usb: dwc2: use a longer core rest timeout in dwc2_core_reset()
usb: gadget: udc: lpc32xx: Use devm_platform_ioremap_resource() in lpc32xx_udc_probe()
USB: gadget: udc: clean up an indentation issue
usb: gadget: Quieten gadget config message
phy: renesas: rcar-gen3-usb2: Use platform_get_irq_optional() for optional irq
usb: gadget: Remove set but not used variable 'opts' in msg_do_config
usb: gadget: Remove set but not used variable 'opts' in acm_ms_do_config
usb: mtu3: add a new function to do status stage
usb: gadget: configfs: fix concurrent issue between composite APIs
usb: gadget: f_tcm: Provide support to get alternate setting in tcm function
usb: gadget: Correct NULL pointer checking in fsl gadget
usb: fsl: Remove unused variable
USB: dummy-hcd: use usb_urb_dir_in instead of usb_pipein
USB: dummy-hcd: increase max number of devices to 32
...
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Fixes gcc '-Wunused-but-set-variable' warning:
drivers/usb/gadget/legacy/mass_storage.c: In function msg_do_config:
drivers/usb/gadget/legacy/mass_storage.c:108:19: warning: variable opts set but not used [-Wunused-but-set-variable]
It is not used since commit f78bbcae86e6 ("usb: f_mass_storage:
test whether thread is running before starting another")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: zhengbin <zhengbin13@huawei.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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Fixes gcc '-Wunused-but-set-variable' warning:
drivers/usb/gadget/legacy/acm_ms.c: In function acm_ms_do_config:
drivers/usb/gadget/legacy/acm_ms.c:108:19: warning: variable opts set but not used [-Wunused-but-set-variable]
It is not used since commit f78bbcae86e6 ("usb: f_mass_storage:
test whether thread is running before starting another")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: zhengbin <zhengbin13@huawei.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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Legacy serial USB gadget is still useful as an early console,
before userspace is up. Later it could be replaced with proper
configfs-configured composite gadget - that use case is enabled
by this patch.
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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Fixes gcc '-Wunused-but-set-variable' warning:
drivers/usb/gadget/legacy/mass_storage.c: In function msg_do_config:
drivers/usb/gadget/legacy/mass_storage.c:108:19: warning: variable opts set but not used [-Wunused-but-set-variable]
It is not used since commit f78bbcae86e6 ("usb: f_mass_storage:
test whether thread is running before starting another")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: zhengbin <zhengbin13@huawei.com>
Link: https://lore.kernel.org/r/1570610434-68293-3-git-send-email-zhengbin13@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Fixes gcc '-Wunused-but-set-variable' warning:
drivers/usb/gadget/legacy/acm_ms.c: In function acm_ms_do_config:
drivers/usb/gadget/legacy/acm_ms.c:108:19: warning: variable opts set but not used [-Wunused-but-set-variable]
It is not used since commit f78bbcae86e6 ("usb: f_mass_storage:
test whether thread is running before starting another")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: zhengbin <zhengbin13@huawei.com>
Link: https://lore.kernel.org/r/1570610434-68293-2-git-send-email-zhengbin13@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Adjust indentation from spaces to tab (+optional two spaces) as in
coding style with command like:
$ sed -e 's/^ /\t/' -i */Kconfig
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20190923154956.6868-1-krzk@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs mount updates from Al Viro:
"The first part of mount updates.
Convert filesystems to use the new mount API"
* 'work.mount0' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (63 commits)
mnt_init(): call shmem_init() unconditionally
constify ksys_mount() string arguments
don't bother with registering rootfs
init_rootfs(): don't bother with init_ramfs_fs()
vfs: Convert smackfs to use the new mount API
vfs: Convert selinuxfs to use the new mount API
vfs: Convert securityfs to use the new mount API
vfs: Convert apparmorfs to use the new mount API
vfs: Convert openpromfs to use the new mount API
vfs: Convert xenfs to use the new mount API
vfs: Convert gadgetfs to use the new mount API
vfs: Convert oprofilefs to use the new mount API
vfs: Convert ibmasmfs to use the new mount API
vfs: Convert qib_fs/ipathfs to use the new mount API
vfs: Convert efivarfs to use the new mount API
vfs: Convert configfs to use the new mount API
vfs: Convert binfmt_misc to use the new mount API
convenience helper: get_tree_single()
convenience helper get_tree_nodev()
vfs: Kill sget_userns()
...
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Convert the gadgetfs filesystem to the new internal mount API as the old
one will be obsoleted and removed. This allows greater flexibility in
communication of mount parameters between userspace, the VFS and the
filesystem.
See Documentation/filesystems/mount_api.txt for more information.
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Felipe Balbi <felipe.balbi@linux.intel.com>
cc: linux-usb@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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While there are a mix of things here, most of the stuff
were written from Kernel developer's PoV. So, add them to
the driver-api book.
A follow up for this patch would be to move documents from
there that are specific to sysadmins, adding them to the
admin-guide.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Acked-by: Johan Hovold <johan@kernel.org>
Acked-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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'default n' is the default value for any bool or tristate Kconfig
setting so there is no need to write it explicitly.
Also since commit f467c5640c29 ("kconfig: only write '# CONFIG_FOO
is not set' for visible symbols") the Kconfig behavior is the same
regardless of 'default n' being present or not:
...
One side effect of (and the main motivation for) this change is making
the following two definitions behave exactly the same:
config FOO
bool
config FOO
bool
default n
With this change, neither of these will generate a
'# CONFIG_FOO is not set' line (assuming FOO isn't selected/implied).
That might make it clearer to people that a bare 'default n' is
redundant.
...
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next
Felipe writes:
USB: changes for v5.1 merge window
Dwc3 now works on TI's AM6xx platforms. Also on dwc3 we have a few
changes which improve request cancellation and some improvements to
how we print to the trace buffer.
Renesas_usb3 got support for r8a774c0 device.
Dwc2 got scatter-gather support.
Apart from these, the usual set of minor fixes and all sorts of small
details.
* tag 'usb-for-v5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb: (40 commits)
usb: phy: twl6030-usb: fix possible use-after-free on remove
usb: misc: usbtest: add super-speed isoc support
usb: dwc3: Reset num_trbs after skipping
usb: dwc3: gadget: don't enable interrupt when disabling endpoint
fotg210-udc: pass struct device to DMA API functions
fotg210-udc: remove a bogus dma_sync_single_for_device call
usb: gadget: Change Andrzej Pietrasiewicz's e-mail address
usb: f_fs: Avoid crash due to out-of-scope stack ptr access
usb: dwc3: haps: Workaround matching VID PID
usb: gadget: f_fs: preserve wMaxPacketSize across usb_ep_autoconfig() call
usb: gadget: move non-super speed code out of usb_ep_autoconfig_ss()
usb: gadget: function: sync f_uac1 ac header baInterfaceNr
usb: dwc2: gadget: Add scatter-gather mode
usb: gadget: fix various indentation issues
usb: dwc2: Fix EP TxFIFO number setting
udc: net2280: Fix net2280_disable
USB: gadget: Improve kerneldoc for usb_ep_dequeue()
usb: dwc3: debug: purge usage of strcat
usb: dwc3: trace: pass trace buffer size to decoding functions
usb: dwc3: gadget: remove DWC3_EP_END_TRANSFER_PENDING
...
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There are a bunch of various indentation issues, clean these up.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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There are a few remaining drivers/usb/ files that do not have SPDX
identifiers in them, all of these are either Kconfig or Makefiles. Add
the correct GPL-2.0 identifier to them to make scanning tools happy.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Trivial fix to spelling mistake in usbg_us_strings array
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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The trace module parameter controls output of debugging messages in the
UVC function driver. Move it from the webcam module to the UVC function
module where it belongs. This allows ConfigFS-based UVC gadgets to
control tracing.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB/PHY updates from Greg KH:
"Here is the big set of USB and PHY driver patches for 4.17-rc1.
Lots of USB typeC work happened this round, with code moving from the
staging directory into the "real" part of the kernel, as well as new
infrastructure being added to be able to handle the different types of
"roles" that typeC requires.
There is also the normal huge set of USB gadget controller and driver
updates, along with XHCI changes, and a raft of other tiny fixes all
over the USB tree. And the PHY driver updates are merged in here as
well as they interacted with the USB drivers in some places.
All of these have been in linux-next for a while with no reported
issues"
* tag 'usb-4.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (250 commits)
Revert "USB: serial: ftdi_sio: add Id for Physik Instrumente E-870"
usb: musb: gadget: misplaced out of bounds check
usb: chipidea: imx: Fix ULPI on imx53
usb: chipidea: imx: Cleanup ci_hdrc_imx_platform_flag
usb: chipidea: usbmisc: small clean up
usb: chipidea: usbmisc: evdo can be set e/o reset
usb: chipidea: usbmisc: evdo is only specific to OTG port
USB: serial: ftdi_sio: add Id for Physik Instrumente E-870
usb: dwc3: gadget: never call ->complete() from ->ep_queue()
usb: gadget: udc: core: update usb_ep_queue() documentation
usb: host: Remove the deprecated ATH79 USB host config options
usb: roles: Fix return value check in intel_xhci_usb_probe()
USB: gadget: f_midi: fixing a possible double-free in f_midi
usb: core: Add USB_QUIRK_DELAY_CTRL_MSG to usbcore quirks
usb: core: Copy parameter string correctly and remove superfluous null check
USB: announce bcdDevice as well as idVendor, idProduct.
USB:fix USB3 devices behind USB3 hubs not resuming at hibernate thaw
usb: hub: Reduce warning to notice on power loss
USB: serial: ftdi_sio: add support for Harman FirmwareHubEmulator
USB: serial: cp210x: add ELDAT Easywave RX09 id
...
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The website is no longer used for tracking bugs.
Signed-off-by: Aaron Wu <aaron.wu@analog.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Increase max_speed of the mass_storage driver for UDCs that support
SuperSpeed Plus. The composite driver will pass this value to UDC core
to set the device speed on probe (actual speed may be different
depending on whether the USB controller supports it or other external
factors).
Signed-off-by: Thinh Nguyen <thinhn@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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This is the mindless scripted replacement of kernel use of POLL*
variables as described by Al, done by this script:
for V in IN OUT PRI ERR RDNORM RDBAND WRNORM WRBAND HUP RDHUP NVAL MSG; do
L=`git grep -l -w POLL$V | grep -v '^t' | grep -v /um/ | grep -v '^sa' | grep -v '/poll.h$'|grep -v '^D'`
for f in $L; do sed -i "-es/^\([^\"]*\)\(\<POLL$V\>\)/\\1E\\2/" $f; done
done
with de-mangling cleanups yet to come.
NOTE! On almost all architectures, the EPOLL* constants have the same
values as the POLL* constants do. But they keyword here is "almost".
For various bad reasons they aren't the same, and epoll() doesn't
actually work quite correctly in some cases due to this on Sparc et al.
The next patch from Al will sort out the final differences, and we
should be all done.
Scripted-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB/PHY updates from Greg KH:
"Here is the big USB and PHY driver update for 4.16-rc1.
Along with the normally expected XHCI, MUSB, and Gadget driver
patches, there are some PHY driver fixes, license cleanups, sysfs
attribute cleanups, usbip changes, and a raft of other smaller fixes
and additions.
Full details are in the shortlog.
All of these have been in the linux-next tree for a long time with no
reported issues"
* tag 'usb-4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (137 commits)
USB: serial: pl2303: new device id for Chilitag
USB: misc: fix up some remaining DEVICE_ATTR() usages
USB: musb: fix up one odd DEVICE_ATTR() usage
USB: atm: fix up some remaining DEVICE_ATTR() usage
USB: move many drivers to use DEVICE_ATTR_WO
USB: move many drivers to use DEVICE_ATTR_RO
USB: move many drivers to use DEVICE_ATTR_RW
USB: misc: chaoskey: Use true and false for boolean values
USB: storage: remove old wording about how to submit a change
USB: storage: remove invalid URL from drivers
usb: ehci-omap: don't complain on -EPROBE_DEFER when no PHY found
usbip: list: don't list devices attached to vhci_hcd
usbip: prevent bind loops on devices attached to vhci_hcd
USB: serial: remove redundant initializations of 'mos_parport'
usb/gadget: Fix "high bandwidth" check in usb_gadget_ep_match_desc()
usb: gadget: compress return logic into one line
usbip: vhci_hcd: update 'status' file header and format
USB: serial: simple: add Motorola Tetra driver
CDC-ACM: apply quirk for card reader
usb: option: Add support for FS040U modem
...
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull poll annotations from Al Viro:
"This introduces a __bitwise type for POLL### bitmap, and propagates
the annotations through the tree. Most of that stuff is as simple as
'make ->poll() instances return __poll_t and do the same to local
variables used to hold the future return value'.
Some of the obvious brainos found in process are fixed (e.g. POLLIN
misspelled as POLL_IN). At that point the amount of sparse warnings is
low and most of them are for genuine bugs - e.g. ->poll() instance
deciding to return -EINVAL instead of a bitmap. I hadn't touched those
in this series - it's large enough as it is.
Another problem it has caught was eventpoll() ABI mess; select.c and
eventpoll.c assumed that corresponding POLL### and EPOLL### were
equal. That's true for some, but not all of them - EPOLL### are
arch-independent, but POLL### are not.
The last commit in this series separates userland POLL### values from
the (now arch-independent) kernel-side ones, converting between them
in the few places where they are copied to/from userland. AFAICS, this
is the least disruptive fix preserving poll(2) ABI and making epoll()
work on all architectures.
As it is, it's simply broken on sparc - try to give it EPOLLWRNORM and
it will trigger only on what would've triggered EPOLLWRBAND on other
architectures. EPOLLWRBAND and EPOLLRDHUP, OTOH, are never triggered
at all on sparc. With this patch they should work consistently on all
architectures"
* 'misc.poll' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (37 commits)
make kernel-side POLL... arch-independent
eventpoll: no need to mask the result of epi_item_poll() again
eventpoll: constify struct epoll_event pointers
debugging printk in sg_poll() uses %x to print POLL... bitmap
annotate poll(2) guts
9p: untangle ->poll() mess
->si_band gets POLL... bitmap stored into a user-visible long field
ring_buffer_poll_wait() return value used as return value of ->poll()
the rest of drivers/*: annotate ->poll() instances
media: annotate ->poll() instances
fs: annotate ->poll() instances
ipc, kernel, mm: annotate ->poll() instances
net: annotate ->poll() instances
apparmor: annotate ->poll() instances
tomoyo: annotate ->poll() instances
sound: annotate ->poll() instances
acpi: annotate ->poll() instances
crypto: annotate ->poll() instances
block: annotate ->poll() instances
x86: annotate ->poll() instances
...
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Simplify return logic and avoid unnecessary variable assignment.
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next
Felipe writes:
usb: changes for v4.16 merge window
Not many changes here, the most important being an improvement for TI's
AM57xx and DRA7xx devices which allows them to disable a metastability
workaround in situations where we know what's going on.
Other than that, we have a set of changes on Renesas UDC to make the
code a little easier to read and maintain while also better supporting
extcon framework.
The u_serial adaptation layer learned to use kfifo instead of cooking
its own FIFO implementation.
DWC3 learned to decode a few more USB requests on the trace output.
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This reverts commit 7a9618a22aadffb55027d665491adf466bced61a.
Romain Izard recently reported that commit 7a9618a22aad ended up
allowing every legacy gadget driver to statically linked to the
kernel, however that doesn't work, since only one legacy gadget can be
bound to a controller. Because of that, let's revert the original commit
and fix the problem.
Reported-by: Romain Izard <romain.izard.pro@gmail.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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Configuring the USB_G_WEBCAM driver as built-in leads to a link
error when CONFIG_VIDEO_V4L2 is a loadable module:
drivers/usb/gadget/function/f_uvc.o: In function `uvc_function_setup':
f_uvc.c:(.text+0xfe): undefined reference to `v4l2_event_queue'
drivers/usb/gadget/function/f_uvc.o: In function `uvc_function_ep0_complete':
f_uvc.c:(.text+0x188): undefined reference to `v4l2_event_queue'
This changes the Kconfig dependency to disallow that configuration,
and force it to be a module in that case as well.
This is apparently a rather old bug, but very hard to trigger
even in thousands of randconfig builds.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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The variable value is being assigned to zero but that value is never being
read. Either value is being reassigned in the following if condition, or
it is never read and the function returns. In both cases the assignment is
redundant and can be removed. Cleans up clang warning:
drivers/usb/gadget/legacy/inode.c:1473:4: warning: Value stored to 'value'
is never read
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
|
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
|
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Considerable time ago the legacy gadget menu was added inside the
USB_ETH choice. I think this was a mistake and that the legacy
gadget menu should have been added after "endchoice" instead of
before. Hence this patch.
Fixes: commit 8443f2d2b778 ("usb: gadget: Gadget directory cleanup - group legacy gadgets")
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Cc: Nicholas Bellinger <nab@linux-iscsi.org>
Cc: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Cc: linux-usb@vger.kernel.org
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB/PHY updates from Greg KH:
"Here is the big set of USB and PHY driver updates for 4.15-rc1.
There is the usual amount of gadget and xhci driver updates, along
with phy and chipidea enhancements. There's also a lot of SPDX tags
and license boilerplate cleanups as well, which provide some churn in
the diffstat.
Other major thing is the typec code that moved out of staging and into
the "real" part of the drivers/usb/ tree, which was nice to see
happen.
All of these have been in linux-next with no reported issues for a
while"
* tag 'usb-4.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (263 commits)
usb: gadget: f_fs: Fix use-after-free in ffs_free_inst
USB: usbfs: compute urb->actual_length for isochronous
usb: core: message: remember to reset 'ret' to 0 when necessary
USB: typec: Remove remaining redundant license text
USB: typec: add SPDX identifiers to some files
USB: renesas_usbhs: rcar?.h: add SPDX tags
USB: chipidea: ci_hdrc_tegra.c: add SPDX line
USB: host: xhci-debugfs: add SPDX lines
USB: add SPDX identifiers to all remaining Makefiles
usb: host: isp1362-hcd: remove a couple of redundant assignments
USB: adutux: remove redundant variable minor
usb: core: add a new usb_get_ptm_status() helper
usb: core: add a 'type' parameter to usb_get_status()
usb: core: introduce a new usb_get_std_status() helper
usb: core: rename usb_get_status() 'type' argument to 'recip'
usb: core: add Status Type definitions
USB: gadget: Remove redundant license text
USB: gadget: function: Remove redundant license text
USB: gadget: udc: Remove redundant license text
USB: gadget: legacy: Remove redundant license text
...
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Now that the SPDX tag is in all USB files, that identifies the license
in a specific and legally-defined manner. So the extra GPL text wording
can be removed as it is no longer needed at all.
This is done on a quest to remove the 700+ different ways that files in
the kernel describe the GPL license text. And there's unneeded stuff
like the address (sometimes incorrect) for the FSF which is never
needed.
No copyright headers or other non-license-description text was removed.
Cc: Johan Hovold <johan@kernel.org>
Cc: Ruslan Bilovol <ruslan.bilovol@gmail.com>
Cc: Peter Chen <peter.chen@nxp.com>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: David Windsor <dwindsor@gmail.com>
Acked-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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It's good to have SPDX identifiers in all files to make it easier to
audit the kernel tree for correct licenses.
Update the drivers/usb/ and include/linux/usb* files with the correct
SPDX license identifier based on the license text in the file itself.
The SPDX identifier is a legally binding shorthand, which can be used
instead of the full boiler plate text.
This work is based on a script and data from Thomas Gleixner, Philippe
Ombredanne, and Kate Stewart.
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Kate Stewart <kstewart@linuxfoundation.org>
Cc: Philippe Ombredanne <pombredanne@nexb.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Acked-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Many source files in the tree are missing licensing information, which
makes it harder for compliance tools to determine the correct license.
By default all files without license information are under the default
license of the kernel, which is GPL version 2.
Update the files which contain no license information with the 'GPL-2.0'
SPDX license identifier. The SPDX identifier is a legally binding
shorthand, which can be used instead of the full boiler plate text.
This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne.
How this work was done:
Patches were generated and checked against linux-4.14-rc6 for a subset of
the use cases:
- file had no licensing information it it.
- file was a */uapi/* one with no licensing information in it,
- file was a */uapi/* one with existing licensing information,
Further patches will be generated in subsequent months to fix up cases
where non-standard license headers were used, and references to license
had to be inferred by heuristics based on keywords.
The analysis to determine which SPDX License Identifier to be applied to
a file was done in a spreadsheet of side by side results from of the
output of two independent scanners (ScanCode & Windriver) producing SPDX
tag:value files created by Philippe Ombredanne. Philippe prepared the
base worksheet, and did an initial spot review of a few 1000 files.
The 4.13 kernel was the starting point of the analysis with 60,537 files
assessed. Kate Stewart did a file by file comparison of the scanner
results in the spreadsheet to determine which SPDX license identifier(s)
to be applied to the file. She confirmed any determination that was not
immediately clear with lawyers working with the Linux Foundation.
Criteria used to select files for SPDX license identifier tagging was:
- Files considered eligible had to be source code files.
- Make and config files were included as candidates if they contained >5
lines of source
- File already had some variant of a license header in it (even if <5
lines).
All documentation files were explicitly excluded.
The following heuristics were used to determine which SPDX license
identifiers to apply.
- when both scanners couldn't find any license traces, file was
considered to have no license information in it, and the top level
COPYING file license applied.
For non */uapi/* files that summary was:
SPDX license identifier # files
---------------------------------------------------|-------
GPL-2.0 11139
and resulted in the first patch in this series.
If that file was a */uapi/* path one, it was "GPL-2.0 WITH
Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was:
SPDX license identifier # files
---------------------------------------------------|-------
GPL-2.0 WITH Linux-syscall-note 930
and resulted in the second patch in this series.
- if a file had some form of licensing information in it, and was one
of the */uapi/* ones, it was denoted with the Linux-syscall-note if
any GPL family license was found in the file or had no licensing in
it (per prior point). Results summary:
SPDX license identifier # files
---------------------------------------------------|------
GPL-2.0 WITH Linux-syscall-note 270
GPL-2.0+ WITH Linux-syscall-note 169
((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21
((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17
LGPL-2.1+ WITH Linux-syscall-note 15
GPL-1.0+ WITH Linux-syscall-note 14
((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5
LGPL-2.0+ WITH Linux-syscall-note 4
LGPL-2.1 WITH Linux-syscall-note 3
((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3
((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1
and that resulted in the third patch in this series.
- when the two scanners agreed on the detected license(s), that became
the concluded license(s).
- when there was disagreement between the two scanners (one detected a
license but the other didn't, or they both detected different
licenses) a manual inspection of the file occurred.
- In most cases a manual inspection of the information in the file
resulted in a clear resolution of the license that should apply (and
which scanner probably needed to revisit its heuristics).
- When it was not immediately clear, the license identifier was
confirmed with lawyers working with the Linux Foundation.
- If there was any question as to the appropriate license identifier,
the file was flagged for further research and to be revisited later
in time.
In total, over 70 hours of logged manual review was done on the
spreadsheet to determine the SPDX license identifiers to apply to the
source files by Kate, Philippe, Thomas and, in some cases, confirmation
by lawyers working with the Linux Foundation.
Kate also obtained a third independent scan of the 4.13 code base from
FOSSology, and compared selected files where the other two scanners
disagreed against that SPDX file, to see if there was new insights. The
Windriver scanner is based on an older version of FOSSology in part, so
they are related.
Thomas did random spot checks in about 500 files from the spreadsheets
for the uapi headers and agreed with SPDX license identifier in the
files he inspected. For the non-uapi files Thomas did random spot checks
in about 15000 files.
In initial set of patches against 4.14-rc6, 3 files were found to have
copy/paste license identifier errors, and have been fixed to reflect the
correct identifier.
Additionally Philippe spent 10 hours this week doing a detailed manual
inspection and review of the 12,461 patched files from the initial patch
version early this week with:
- a full scancode scan run, collecting the matched texts, detected
license ids and scores
- reviewing anything where there was a license detected (about 500+
files) to ensure that the applied SPDX license was correct
- reviewing anything where there was no detection but the patch license
was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied
SPDX license was correct
This produced a worksheet with 20 files needing minor correction. This
worksheet was then exported into 3 different .csv files for the
different types of files to be modified.
These .csv files were then reviewed by Greg. Thomas wrote a script to
parse the csv files and add the proper SPDX tag to the file, in the
format that the file expected. This script was further refined by Greg
based on the output to detect more types of files automatically and to
distinguish between header and source .c files (which need different
comment types.) Finally Greg ran the script using the .csv files to
generate the patches.
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
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In preparation for unconditionally passing the struct timer_list pointer to
all timer callbacks, switch to using the new timer_setup() and from_timer()
to pass the timer pointer explicitly. Adds a static tracking variable to
match the timer global.
Signed-off-by: Kees Cook <keescook@chromium.org>
Acked-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
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As a holdover from the old g_file_storage gadget, the g_mass_storage
legacy gadget driver attempts to unregister itself when its main
operating thread terminates (if it hasn't been unregistered already).
This is not strictly necessary; it was never more than an attempt to
have the gadget fail cleanly if something went wrong and the main
thread was killed.
However, now that the UDC core manages gadget drivers independently of
UDC drivers, this scheme doesn't work any more. A simple test:
modprobe dummy-hcd
modprobe g-mass-storage file=...
rmmod dummy-hcd
ends up in a deadlock with the following backtrace:
sysrq: SysRq : Show Blocked State
task PC stack pid father
file-storage D 0 1130 2 0x00000000
Call Trace:
__schedule+0x53e/0x58c
schedule+0x6e/0x77
schedule_preempt_disabled+0xd/0xf
__mutex_lock.isra.1+0x129/0x224
? _raw_spin_unlock_irqrestore+0x12/0x14
__mutex_lock_slowpath+0x12/0x14
mutex_lock+0x28/0x2b
usb_gadget_unregister_driver+0x29/0x9b [udc_core]
usb_composite_unregister+0x10/0x12 [libcomposite]
msg_cleanup+0x1d/0x20 [g_mass_storage]
msg_thread_exits+0xd/0xdd7 [g_mass_storage]
fsg_main_thread+0x1395/0x13d6 [usb_f_mass_storage]
? __schedule+0x573/0x58c
kthread+0xd9/0xdb
? do_set_interface+0x25c/0x25c [usb_f_mass_storage]
? init_completion+0x1e/0x1e
ret_from_fork+0x19/0x24
rmmod D 0 1155 683 0x00000000
Call Trace:
__schedule+0x53e/0x58c
schedule+0x6e/0x77
schedule_timeout+0x26/0xbc
? __schedule+0x573/0x58c
do_wait_for_common+0xb3/0x128
? usleep_range+0x81/0x81
? wake_up_q+0x3f/0x3f
wait_for_common+0x2e/0x45
wait_for_completion+0x17/0x19
fsg_common_put+0x34/0x81 [usb_f_mass_storage]
fsg_free_inst+0x13/0x1e [usb_f_mass_storage]
usb_put_function_instance+0x1a/0x25 [libcomposite]
msg_unbind+0x2a/0x42 [g_mass_storage]
__composite_unbind+0x4a/0x6f [libcomposite]
composite_unbind+0x12/0x14 [libcomposite]
usb_gadget_remove_driver+0x4f/0x77 [udc_core]
usb_del_gadget_udc+0x52/0xcc [udc_core]
dummy_udc_remove+0x27/0x2c [dummy_hcd]
platform_drv_remove+0x1d/0x31
device_release_driver_internal+0xe9/0x16d
device_release_driver+0x11/0x13
bus_remove_device+0xd2/0xe2
device_del+0x19f/0x221
? selinux_capable+0x22/0x27
platform_device_del+0x21/0x63
platform_device_unregister+0x10/0x1a
cleanup+0x20/0x817 [dummy_hcd]
SyS_delete_module+0x10c/0x197
? ____fput+0xd/0xf
? task_work_run+0x55/0x62
? prepare_exit_to_usermode+0x65/0x75
do_fast_syscall_32+0x86/0xc3
entry_SYSENTER_32+0x4e/0x7c
What happens is that removing the dummy-hcd driver causes the UDC core
to unbind the gadget driver, which it does while holding the udc_lock
mutex. The unbind routine in g_mass_storage tells the main thread to
exit and waits for it to terminate.
But as mentioned above, when the main thread exits it tries to
unregister the mass-storage function driver. Via the composite
framework this ends up calling usb_gadget_unregister_driver(), which
tries to acquire the udc_lock mutex. The result is deadlock.
The simplest way to fix the problem is not to be so clever: The main
thread doesn't have to unregister the function driver. The side
effects won't be so terrible; if the gadget is still attached to a USB
host when the main thread is killed, it will appear to the host as
though the gadget's firmware has crashed -- a reasonably accurate
interpretation, and an all-too-common occurrence for USB mass-storage
devices.
In fact, the code to unregister the driver when the main thread exits
is specific to g-mass-storage; it is not used when f-mass-storage is
included as a function in a larger composite device. Therefore the
entire mechanism responsible for this (the fsg_operations structure
with its ->thread_exits method, the fsg_common_set_ops() routine, and
the msg_thread_exits() callback routine) can all be eliminated. Even
the msg_registered bitflag can be removed, because now the driver is
unregistered in only one place rather than in two places.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
CC: <stable@vger.kernel.org>
Acked-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Acked-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
The gadgetfs driver (drivers/usb/gadget/legacy/inode.c) was written
before the UDC and composite frameworks were adopted; it is a legacy
driver. As such, it expects that once bound to a UDC controller, it
will not be unbound until it unregisters itself.
However, the UDC framework does unbind function drivers while they are
still registered. When this happens, it can cause the gadgetfs driver
to misbehave or crash. For example, userspace can cause a crash by
opening the device file and doing an ioctl call before setting up a
configuration (found by Andrey Konovalov using the syzkaller fuzzer).
This patch adds checks and synchronization to prevent these bad
behaviors. It adds a udc_usage counter that the driver increments at
times when it is using a gadget interface without holding the private
spinlock. The unbind routine waits for this counter to go to 0 before
returning, thereby ensuring that the UDC is no longer in use.
The patch also adds a check in the dev_ioctl() routine to make sure
the driver is bound to a UDC before dereferencing the gadget pointer,
and it makes destroy_ep_files() synchronize with the endpoint I/O
routines, to prevent the user from accessing an endpoint data
structure after it has been removed.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Reported-by: Andrey Konovalov <andreyknvl@google.com>
Tested-by: Andrey Konovalov <andreyknvl@google.com>
CC: <stable@vger.kernel.org>
Acked-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
The gadgetfs driver as a long-outstanding FIXME, regarding a call of
copy_to_user() made while holding a spinlock. This patch fixes the
issue by dropping the spinlock and using the dev->udc_usage mechanism
introduced by another recent patch to guard against status changes
while the lock isn't held.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Reported-by: Andrey Konovalov <andreyknvl@google.com>
CC: <stable@vger.kernel.org>
Acked-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
MODULE_VERSION is useless for in-kernel drivers, so just remove all
usage of it in the USB gadget drivers. Along with this, some
DRIVER_VERSION macros were removed as they are also pointless.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-testing
Felipe writes:
usb: changes for v4.13 merge window
This time around we have a total of 57 non-merge commits. A list of
most important changes follows:
- Improvements to dwc3 tracing interface
- Initial dual-role support for dwc3
- Improvements to how we handle DMA resources in dwc3
- A new f_uac1 implementation which much more flexible
- Removal of AVR32 bits
- Improvements to f_mass_storage driver
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This patch adds a new function 'f_uac1'
(f_uac1 with virtual "ALSA card") that
uses recently created u_audio API. Comparing
to legacy f_uac1 function implementation it
doesn't require any real Audio codec to be
present on the device. In f_uac1 audio
streams are simply sinked to and sourced
from a virtual ALSA sound card created
using u_audio API.
Legacy f_uac1 approach is to write audio
samples directly to existing ALSA sound
card
f_uac1 approach is more generic/flexible
one - create an ALSA sound card that
represents USB Audio function and allows to
be used by userspace application that
may choose to do whatever it wants with the
data received from the USB Host and choose
to provide whatever it wants as audio data
to the USB Host.
f_uac1 also has capture support (gadget->host)
thanks to easy implementation via u_audio.
By default, capture interface has 48000kHz/2ch
configuration, same as playback channel has.
f_uac1 descriptors naming convention
uses f_uac2 driver naming convention that
makes it more common and meaningful.
Comparing to f_uac1_legacy, the f_uac1 doesn't
have volume/mute functionality. This is because
the f_uac1 volume/mute feature unit was dummy
implementation since that driver creation (2009)
and never had any real volume control or mute
functionality, so there is no any difference
here.
Since f_uac1 functionality, exposed
interface to userspace (virtual ALSA card),
input parameters are so different comparing
to f_uac1_legacy, that there is no any
reason to keep them in the same file/module,
and separate function was created.
g_audio can be built using one of existing
UAC functions (f_uac1, f_uac1_legacy or f_uac2)
Signed-off-by: Ruslan Bilovol <ruslan.bilovol@gmail.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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Before introducing new f_uac1 function (with virtual
ALSA card) make current implementation legacy.
This includes renaming of existing files, some
variables, config options and documentation
Signed-off-by: Ruslan Bilovol <ruslan.bilovol@gmail.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
|
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Abstract the peripheral side ALSA sound card code from
the f_uac2 function into a component that can be called
by various functions, so the various flavors can be split
apart and selectively reused.
Visible changes:
- add uac_params structure to pass audio paramteres for
g_audio_setup
- make ALSA sound card's name configurable
- add [in/out]_ep_maxpsize
- allocate snd_uac_chip structure during g_audio_setup
- add u_audio_[start/stop]_[capture/playback] functions
Signed-off-by: Ruslan Bilovol <ruslan.bilovol@gmail.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
|
