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The only actual current lockref user (dcache) uses zero reference counts
even for perfectly live dentries, because it's a cache: there may not be
any users, but that doesn't mean that we want to throw away the dentry.
At the same time, the dentry cache does have a notion of a truly "dead"
dentry that we must not even increment the reference count of, because
we have pruned it and it is not valid.
Currently that distinction is not visible in the lockref itself, and the
dentry cache validation uses "lockref_get_or_lock()" to either get a new
reference to a dentry that already had existing references (and thus
cannot be dead), or get the dentry lock so that we can then verify the
dentry and increment the reference count under the lock if that
verification was successful.
That's all somewhat complicated.
This adds the concept of being "dead" to the lockref itself, by simply
using a count that is negative. This allows a usage scenario where we
can increment the refcount of a dentry without having to validate it,
and pushing the special "we killed it" case into the lockref code.
The dentry code itself doesn't actually use this yet, and it's probably
too late in the merge window to do that code (the dentry_kill() code
with its "should I decrement the count" logic really is pretty complex
code), but let's introduce the concept at the lockref level now.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Commit 97431204ea005ec8070ac94bc3251e836daa7ca7 introduced a regression
that causes SECINFO_NO_NAME to fail without sending an RPC if:
1) the nfs_client's rpc_client is using krb5i/p (now tried by default)
2) the current user doesn't have valid kerberos credentials
This situation is quite common - as of now a sec=sys mount would use
krb5i for the nfs_client's rpc_client and a user would hardly be faulted
for not having run kinit.
The solution is to use the machine cred when trying to use an integrity
protected auth flavor for SECINFO_NO_NAME.
Older servers may not support using the machine cred or an integrity
protected auth flavor for SECINFO_NO_NAME in every circumstance, so we fall
back to using the user's cred and the filesystem's auth flavor in this case.
We run into another problem when running against linux nfs servers -
they return NFS4ERR_WRONGSEC when using integrity auth flavor (unless the
mount is also that flavor) even though that is not a valid error for
SECINFO*. Even though it's against spec, handle WRONGSEC errors on
SECINFO_NO_NAME by falling back to using the user cred and the
filesystem's auth flavor.
Signed-off-by: Weston Andros Adamson <dros@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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Also don't worry about obsolete mount flags...
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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The code got rewritten, but the comments got copied as-is from older
versions, and as a result the argument name in the comment didn't
actually match the code any more.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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In cases where the parent super block was not mounted with a 'sec=' line,
allow autonegotiation of security for the submounts.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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Ensure that nfs4_proc_lookup_common respects the NFS_MOUNT_SECFLAVOUR
flag.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs pile 2 (of many) from Al Viro:
"Mostly Miklos' series this time"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
constify dcache.c inlined helpers where possible
fuse: drop dentry on failed revalidate
fuse: clean up return in fuse_dentry_revalidate()
fuse: use d_materialise_unique()
sysfs: use check_submounts_and_drop()
nfs: use check_submounts_and_drop()
gfs2: use check_submounts_and_drop()
afs: use check_submounts_and_drop()
vfs: check unlinked ancestors before mount
vfs: check submounts and drop atomically
vfs: add d_walk()
vfs: restructure d_genocide()
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git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
Pull namespace changes from Eric Biederman:
"This is an assorted mishmash of small cleanups, enhancements and bug
fixes.
The major theme is user namespace mount restrictions. nsown_capable
is killed as it encourages not thinking about details that need to be
considered. A very hard to hit pid namespace exiting bug was finally
tracked and fixed. A couple of cleanups to the basic namespace
infrastructure.
Finally there is an enhancement that makes per user namespace
capabilities usable as capabilities, and an enhancement that allows
the per userns root to nice other processes in the user namespace"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace:
userns: Kill nsown_capable it makes the wrong thing easy
capabilities: allow nice if we are privileged
pidns: Don't have unshare(CLONE_NEWPID) imply CLONE_THREAD
userns: Allow PR_CAPBSET_DROP in a user namespace.
namespaces: Simplify copy_namespaces so it is clear what is going on.
pidns: Fix hang in zap_pid_ns_processes by sending a potentially extra wakeup
sysfs: Restrict mounting sysfs
userns: Better restrictions on when proc and sysfs can be mounted
vfs: Don't copy mount bind mounts of /proc/<pid>/ns/mnt between namespaces
kernel/nsproxy.c: Improving a snippet of code.
proc: Restrict mounting the proc filesystem
vfs: Lock in place mounts from more privileged users
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git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
Pull security subsystem updates from James Morris:
"Nothing major for this kernel, just maintenance updates"
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: (21 commits)
apparmor: add the ability to report a sha1 hash of loaded policy
apparmor: export set of capabilities supported by the apparmor module
apparmor: add the profile introspection file to interface
apparmor: add an optional profile attachment string for profiles
apparmor: add interface files for profiles and namespaces
apparmor: allow setting any profile into the unconfined state
apparmor: make free_profile available outside of policy.c
apparmor: rework namespace free path
apparmor: update how unconfined is handled
apparmor: change how profile replacement update is done
apparmor: convert profile lists to RCU based locking
apparmor: provide base for multiple profiles to be replaced at once
apparmor: add a features/policy dir to interface
apparmor: enable users to query whether apparmor is enabled
apparmor: remove minimum size check for vmalloc()
Smack: parse multiple rules per write to load2, up to PAGE_SIZE-1 bytes
Smack: network label match fix
security: smack: add a hash table to quicken smk_find_entry()
security: smack: fix memleak in smk_write_rules_list()
xattr: Constify ->name member of "struct xattr".
...
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Pull crypto update from Herbert Xu:
"Here is the crypto update for 3.12:
- Added MODULE_SOFTDEP to allow pre-loading of modules.
- Reinstated crct10dif driver using the module softdep feature.
- Allow via rng driver to be auto-loaded.
- Split large input data when necessary in nx.
- Handle zero length messages correctly for GCM/XCBC in nx.
- Handle SHA-2 chunks bigger than block size properly in nx.
- Handle unaligned lengths in omap-aes.
- Added SHA384/SHA512 to omap-sham.
- Added OMAP5/AM43XX SHAM support.
- Added OMAP4 TRNG support.
- Misc fixes"
* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (66 commits)
Reinstate "crypto: crct10dif - Wrap crc_t10dif function all to use crypto transform framework"
hwrng: via - Add MODULE_DEVICE_TABLE
crypto: fcrypt - Fix bitoperation for compilation with clang
crypto: nx - fix SHA-2 for chunks bigger than block size
crypto: nx - fix GCM for zero length messages
crypto: nx - fix XCBC for zero length messages
crypto: nx - fix limits to sg lists for AES-CCM
crypto: nx - fix limits to sg lists for AES-XCBC
crypto: nx - fix limits to sg lists for AES-GCM
crypto: nx - fix limits to sg lists for AES-CTR
crypto: nx - fix limits to sg lists for AES-CBC
crypto: nx - fix limits to sg lists for AES-ECB
crypto: nx - add offset to nx_build_sg_lists()
padata - Register hotcpu notifier after initialization
padata - share code between CPU_ONLINE and CPU_DOWN_FAILED, same to CPU_DOWN_PREPARE and CPU_UP_CANCELED
hwrng: omap - reorder OMAP TRNG driver code
crypto: omap-sham - correct dma burst size
crypto: omap-sham - Enable Polling mode if DMA fails
crypto: tegra-aes - bitwise vs logical and
crypto: sahara - checking the wrong variable
...
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Pull networking fixes from David Miller:
"A quick set of fixes, some to deal with fallout from yesterday's
net-next merge.
1) Fix compilation of bnx2x driver with CONFIG_BNX2X_SRIOV disabled,
from Dmitry Kravkov.
2) Fix a bnx2x regression caused by one of Dave Jones's mistaken
braces changes, from Eilon Greenstein.
3) Add some protective filtering in the netlink tap code, from Daniel
Borkmann.
4) Fix TCP congestion window growth regression after timeouts, from
Yuchung Cheng.
5) Correctly adjust TCP's rcv_ssthresh for out of order packets, from
Eric Dumazet"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
tcp: properly increase rcv_ssthresh for ofo packets
net: add documentation for BQL helpers
mlx5: remove unused MLX5_DEBUG param in Kconfig
bnx2x: Restore a call to config_init
bnx2x: fix broken compilation with CONFIG_BNX2X_SRIOV is not set
tcp: fix no cwnd growth after timeout
net: netlink: filter particular protocols from analyzers
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NFSv4 security auto-negotiation has been broken since
commit 4580a92d44e2b21c2254fa5fef0f1bfb43c82318 (NFS:
Use server-recommended security flavor by default (NFSv3))
because nfs4_try_mount() will automatically select AUTH_SYS
if it sees no auth flavours.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: Chuck Lever <chuck.lever@oracle.com>
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Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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What is the point of having a 'auth_flavor_len' field, if it is
always set to 1, and can't be used to determine if the user has
selected an auth flavour?
This cleanup goes back to using auth_flavor_len for its original
intended purpose, and gets rid of the ad-hoc replacements.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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If we have multiple sessions on a system, we normally don't want
background sessions to read input events. Otherwise, it could capture
passwords and more entered by the user on the foreground session. This is
a real world problem as the recent XMir development showed:
http://mjg59.dreamwidth.org/27327.html
We currently rely on sessions to release input devices when being
deactivated. This relies on trust across sessions. But that's not given on
usual systems. We therefore need a way to control which processes have
access to input devices.
With VTs the kernel simply routed them through the active /dev/ttyX. This
is not possible with evdev devices, though. Moreover, we want to avoid
routing input-devices through some dispatcher-daemon in userspace (which
would add some latency).
This patch introduces EVIOCREVOKE. If called on an evdev fd, this revokes
device-access irrecoverably for that *single* open-file. Hence, once you
call EVIOCREVOKE on any dup()ed fd, all fds for that open-file will be
rather useless now (but still valid compared to close()!). This allows us
to pass fds directly to session-processes from a trusted source. The
source keeps a dup()ed fd and revokes access once the session-process is
no longer active.
Compared to the EVIOCMUTE proposal, we can avoid the CAP_SYS_ADMIN
restriction now as there is no way to revive the fd again. Hence, a user
is free to call EVIOCREVOKE themself to kill the fd.
Additionally, this ioctl allows multi-layer access-control (again compared
to EVIOCMUTE which was limited to one layer via CAP_SYS_ADMIN). A middle
layer can simply request a new open-file from the layer above and pass it
to the layer below. Now each layer can call EVIOCREVOKE on the fds to
revoke access for all layers below, at the expense of one fd per layer.
There's already ongoing experimental user-space work which demonstrates
how it can be used:
http://lists.freedesktop.org/archives/systemd-devel/2013-August/012897.html
Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging
Pull hwmon fixes from Jean Delvare.
* 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
hwmon: (emc6w201) Do not declare enum variable
hwmon: (w83792d) Update module author
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git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio
Pull GPIO updates from Linus Walleij:
"This is the bulk of GPIO changes for the v3.12 series:
- A new driver for the TZ1090 PDC which is used on the metag
architecture.
- A new driver for the Kontron ETX or COMexpress GPIO block. This is
found on some ETX x86 devices.
- A new driver for the Fintek Super-I/O chips, used on some x86
boards.
- Added device tree probing on a few select GPIO blocks.
- Drop the Exynos support from the Samsung GPIO driver.
The Samsung maintainers have moved over to use the modernized pin
control driver to provide GPIO for the modern platforms instead.
- The usual bunch of non-critical fixes and cleanups"
* tag 'gpio-v3.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (36 commits)
gpio: return -ENOTSUPP if debounce cannot be set
gpio: improve error path in gpiolib
gpio: add GPIO support for F71882FG and F71889F
of: add vendor prefix for Microchip Technology Inc
gpio: mcp23s08: rename the device tree property
gpio: samsung: Drop support for Exynos SoCs
gpio: pcf857x: Remove pdata argument to pcf857x_irq_domain_init()
gpio: pcf857x: Sort headers alphabetically
gpio: max7301: Reverting "Do not force SPI speed when using OF Platform"
gpio: Fix bit masking in Kontron PLD GPIO driver
gpio: pca953x: fix gpio input on gpio offsets >= 8
drivers/gpio: simplify use of devm_ioremap_resource
drivers/gpio/gpio-omap.c: convert comma to semicolon
gpio-lynxpoint: Fix warning about unbalanced pm_runtime_enable
gpio: Fix platform driver name in Kontron PLD GPIO driver
gpio: adnp: Fix segfault if request_threaded_irq fails
gpio: msm: Staticize local variable 'msm_gpio'
gpio: gpiolib-of.c: make error message more meaningful by adding the node name and index
gpio: use dev_get_platdata()
gpio/mxc: add chained_irq_enter/exit() to mx2_gpio_irq_handler
...
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git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull input updates from Dmitry Torokhov:
"A new driver for slidebar on Ideapad laptops and a bunch of assorted
driver fixes"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (32 commits)
Input: add SYN_MAX and SYN_CNT constants
Input: max11801_ts - convert to devm
Input: egalax-ts - fix typo and improve text
Input: MAINTAINERS - change maintainer for cyttsp driver
Input: cyttsp4 - kill 'defined but not used' compiler warnings
Input: add driver for slidebar on Lenovo IdeaPad laptops
Input: omap-keypad - set up irq type from DT
Input: omap-keypad - enable wakeup capability for keypad.
Input: omap-keypad - clear interrupts on open
Input: omap-keypad - convert to threaded IRQ
Input: omap-keypad - use bitfiled instead of hardcoded values
Input: cyttsp4 - remove useless NULL test from cyttsp4_watchdog_timer()
Input: wacom - fix error return code in wacom_probe()
Input: as5011 - fix error return code in as5011_probe()
Input: keyboard, serio - simplify use of devm_ioremap_resource
Input: tegra-kbc - simplify use of devm_ioremap_resource
Input: htcpen - fix incorrect placement of __initdata
Input: qt1070 - add power management ops
Input: wistron_btns - add MODULE_DEVICE_TABLE
Input: wistron_btns - mark the Medion MD96500 keymap as tested
...
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This reverts commits 61e00655e9cb, 73f8645db191 and 8e22ecb603c8:
"Input: introduce BTN/ABS bits for drums and guitars"
"HID: wiimote: add support for Guitar-Hero drums"
"HID: wiimote: add support for Guitar-Hero guitars"
The extra new ABS_xx values resulted in ABS_MAX no longer being a
power-of-two, which broke the comparison logic. It also caused the
ioctl numbers to overflow into the next byte, causing problems for that.
We'll try again for 3.13.
Reported-by: Markus Trippelsdorf <markus@trippelsdorf.de>
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Acked-by: David Herrmann <dh.herrmann@gmail.com>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Benjamin Tissoires <benjamin.tissoires@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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86a264ab "CRED: Wrap current->cred and a few other accessors" converted
all uses of current->cred into current_cred() but left s390 alone.
So let's convert s390 finally as well, only five years later.
This way we also get rid of a sparse warning which complains about a
possible invalid rcu dereference which however is a false positive.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
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Let's get rid of another sparse false positive:
drivers/s390/crypto/ap_bus.c:416:64: warning:
cast truncates bits from constant value (102030405060708 becomes 5060708)
So instead of using a cast let's use an and-mask.
That way sparse remains silent and one doesn't always have to check
if this is a valid warning/bug or just a false positive.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
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Pointer arithmetics with function pointers is not really defined, but
seems to do the right thing. Let's cast to a void pointer to have a
defined behaviour, at least when using gcc.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
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Make various functions static, add declarations to header files to
fix a couple of sparse findings.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
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Add __force annotations to get rid of a couple of sparse warnings:
arch/s390/kernel/compat_signal.c:335:35:
warning: cast removes address space of expression
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
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Let sparse not incorrectly complain about unbalanced locking.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
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Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
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These handlers are not optional and need in our case
dummy implementions to avoid NULL pointer bugs within
the irq core code.
Reported-and-tested-by: Toralf Foester <toralf.foerster@gmx.de>
Signed-off-by: Richard Weinberger <richard@nod.at>
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On recent toolchains we hit:
In file included from arch/x86/um/os-Linux/prctl.c:7:0:
/usr/include/linux/ptrace.h:58:8: error: redefinition of ‘struct
ptrace_peeksiginfo_args’ struct ptrace_peeksiginfo_args {
^
In file included from arch/x86/um/os-Linux/prctl.c:6:0:
/usr/include/sys/ptrace.h:191:8: note: originally defined here
struct ptrace_peeksiginfo_args
^
make[2]: *** [arch/x86/um/os-Linux/prctl.o] Error 1
make[1]: *** [arch/x86/um/os-Linux] Error 2
make: *** [arch/x86/um] Error 2
The solution is not to include linux/ptrace.h and obtain
the arch specific ptrace command from asm/ptrace.h.
Reported-and-tested-by: David Oberhollenzer <david.oberhollenzer@tele2.at>
Signed-off-by: Richard Weinberger <richard@nod.at>
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If UML is not run by a shell it can happen that UML
will kill unrelated proceses upon a fatal exit because
it issues a kill(0, ...).
To prevent such oddities we create a new session in main().
Reported-and-tested-by: Richard W.M. Jones <rjones@redhat.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
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Richard reported that some UML processes survive if the UML
main process receives a SIGTERM.
This issue was caused by a wrongly placed signal(SIGTERM, SIG_DFL)
in init_new_thread_signals().
It disabled the UML exit handler accidently for some processes.
The correct solution is to disable the fatal handler for all
UML helper threads/processes.
Such that last_ditch_exit() does not get called multiple times
and all processes can exit due to SIGTERM.
Reported-and-tested-by: Richard W.M. Jones <rjones@redhat.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
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Just a clean-up patch to remove the open coded
variants and to ensure that all requests are submitted the
same way.
Signed-off-by: Richard Weinberger <richard@nod.at>
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UML's block device driver does not support write barriers,
to support this this patch adds REQ_FLUSH suppport.
Every time the block layer sends a REQ_FLUSH we fsync() now
our backing file to guarantee data consistency.
Reported-and-tested-by: Richard W.M. Jones <rjones@redhat.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
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UML needs it's own probe_kernel_read() to handle kernel
mode faults correctly.
The implementation uses mincore() on the host side to detect
whether a page is owned by the UML kernel process.
This fixes also a possible crash when sysrq-t is used.
Starting with 3.10 sysrq-t calls probe_kernel_read() to
read details from the kernel workers. As kernel worker are
completely async pointers may turn NULL while reading them.
Cc: <stian@nixia.no>
Cc: <tj@kernel.org>
Cc: <stable@vger.kernel.org> # 3.10.x
Signed-off-by: Richard Weinberger <richard@nod.at>
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We have to implement ->release() and trigger writeback from it.
Otherwise we might lose dirty pages at munmap().
Signed-off-by: Richard Weinberger <richard@nod.at>
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Merge first round of changes for 3.12 merge window.
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transform framework"
This patch reinstates commits
67822649d7305caf3dd50ed46c27b99c94eff996
39761214eefc6b070f29402aa1165f24d789b3f7
0b95a7f85718adcbba36407ef88bba0a7379ed03
31d939625a9a20b1badd2d4e6bf6fd39fa523405
2d31e518a42828df7877bca23a958627d60408bc
Now that module softdeps are in the kernel we can use that to resolve
the boot issue which cause the revert.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Merge upstream tree in order to reinstate crct10dif.
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The spec suggests that we should use _OST to notify the platform
about the status of notifications it sends us, for example so that
it doesn't repeate a notification that has been handled already.
This turns out to help reduce the amount of diagnostic output from
the ACPIPHP subsystem and speed up boot on at least one system that
generates multiple device check notifies for PCIe devices on the root
bus during boot.
Reported-and-tested-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Sometimes we may get a spurious device check or bus check notify for
a hotplug device and in those cases we should avoid doing all of the
configuration work needed when something actually changes. To that
end, check the return value of pci_scan_slot() in enable_slot() and
bail out early if it is 0.
This turns out to help reduce the amount of diagnostic output from
the ACPIPHP subsystem and speed up boot on at least one system that
generates multiple device check notifies for PCIe devices on the root
bus during boot.
Reported-and-tested-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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It might be possible for two callers to race the mutex lock after the
NULL ctx check. Instead, move the lock above the check so there isn't
the possibility of leaking a crypto ctx. Additionally, report the full
algo name when failing.
Signed-off-by: Kees Cook <keescook@chromium.org>
[tyhicks: remove out label, which is no longer used]
Signed-off-by: Tyler Hicks <tyhicks@canonical.com>
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It doesn't make sense to check if an array is NULL. The compiler just
removes the check.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Tyler Hicks <tyhicks@canonical.com>
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UIC attributes can be set with using DME_SET command for
power mode change. For configuration the link capability
attributes are used, which is updated after successful
link startup.
Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com>
Reviewed-by: Subhash Jadavani <subhashj@codeaurora.org>
Signed-off-by: Santosh Y <santoshsy@gmail.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
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Setting PA_PWRMode using DME_SET triggers the power mode
change. And then the result will be given by the HCS.UPMCRS.
This operation should be done atomically.
Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com>
Reviewed-by: Subhash Jadavani <subhashj@codeaurora.org>
Tested-by: Yaniv Gardi <ygardi@codeaurora.org>
Signed-off-by: Santosh Y <santoshsy@gmail.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
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Implements to support GET and SET operations of the DME.
These operations are used to configure the behavior of
the UNIPRO. Along with basic operation, {Peer/AttrSetType}
can be mixed.
Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com>
Reviewed-by: Subhash Jadavani <subhashj@codeaurora.org>
Tested-by: Yaniv Gardi <ygardi@codeaurora.org>
Signed-off-by: Santosh Y <santoshsy@gmail.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
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IACTH(Interrupt aggregation counter threshold) value is allowed
up to 0x1F and current setting value is the maximum.
This value is related with NUTRS(max:0x20) of HCI's capability.
Considering HCI controller doesn't support the maximum, IACTH
setting should be adjusted with possible value.
For that, existing 'ufshcd_config_int_aggr' is split into two part
[reset, configure].
Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com>
Reviewed-by: Subhash Jadavani <subhashj@codeaurora.org>
Tested-by: Yaniv Gardi <ygardi@codeaurora.org>
Signed-off-by: Santosh Y <santoshsy@gmail.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
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Unlike 'GOOD' and 'CHECK CONDITION', other status values in
Response UPIU may or may not contain sense data. That is returning
sense data isn't obvious. So, in this case the Data Segment Length
field should be checked. If a non-zero value, it means that UPIU
has Sense Data in the Data Segment area.
Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com>
Reviewed-by: Subhash Jadavani <subhashj@codeaurora.org>
Tested-by: Yaniv Gardi <ygardi@codeaurora.org>
Signed-off-by: Santosh Y <santoshsy@gmail.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
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Signed-off-by: Adam Radford <aradford@gmail.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
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Logical Disks
Signed-off-by: Adam Radford <aradford@gmail.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
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When transitioning away from vgacon the system tries to save the
current contents of the VGA memory, so that it can be cleanly handed
off to fbcon (or whatever comes afterwards).
The recent change
commit 81b5c7bc8de3e6f63419139c2fc91bf81dea8a7d
Author: Alex Williamson <alex.williamson@redhat.com>
Date: Wed Aug 28 09:39:08 2013 -0600
i915: Update VGA arbiter support for newer devices
caused i915 to disable VGA memory decode for the IGD when i915 is
initializing. Unfortunately that happens before the vgacon->fbcon
handoff so vgacon_save_screen() will read out all ones from the
VGA memory.
After the handoff fbcon will inherit the bogus state from vgacon,
and pre-fills the fb with matching contents. The end result is
a white rectangle in the top left corner of the screen, the size
of which matches the now inactive VGA console.
To remedy the situation delay the disabling of VGA memory until
the vgacon->fbcon handoff has happened.
Also rename i915_enable_vga to i915_enable_vga_mem to make
the relationship between these functions clearer.
Cc: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC board updates from Olof Johansson:
"Board updates for 3.12. Again, a bit of domain overlap with SoC and
DT branches, but most of this is around legacy code and board support.
We've found that platform maintainers have a hard time separating all
of these out and might move towards fewer branches for next release.
- Removal of a number of Marvell Kirkwood board files, since contents
is now common and mostly configured via DT.
- Device-tree updates for Marvell Dove, including irqchip and
clocksource setup.
- Defconfig updates. Gotta go somewhere. One new one for Renesas
Lager.
- New backlight drivers for backlights used on Renesas shmobile
platforms.
- Removal of Renesas leds driver.
- Shuffling of some of the new Broadcom platforms to give room for
others in the same mach directory. More in 3.13"
* tag 'boards-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (67 commits)
mmc: sdhci-bcm-kona: Staticize sdhci_bcm_kona_card_event
mmc: sdhci-bcm-kona: Remove unneeded version.h inclusion
ARM: bcm: Make secure API call optional
ARM: DT: binding fixup to align with vendor-prefixes.txt (drivers)
ARM: mmc: fix NONREMOVABLE test in sdhci-bcm-kona
ARM: bcm: Rename board_bcm
mmc: sdhci-bcm-kona: make linker-section warning go away
ARM: tegra: defconfig updates
ARM: dove: add initial DT file for Globalscale D2Plug
ARM: dove: add GPIO IR receiver node to SolidRun CuBox
ARM: dove: add common pinmux functions to DT
ARM: dove: add cpu device tree node
ARM: dove: update dove_defconfig with SI5351, PCI, and xHCI
arch/arm/mach-kirkwood: Avoid using ARRAY_AND_SIZE(e) as a function argument
ARM: kirkwood: fix DT building and update defconfig
ARM: kirkwood: Remove all remaining trace of DNS-320/325 platform code
ARM: configs: disable DEBUG_LL in bcm_defconfig
ARM: bcm281xx: Board specific reboot code
ARM bcm281xx: Turn on socket & network support.
ARM: bcm281xx: Turn on L2 cache.
...
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