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Commit e8765b265a69 (arm64: read enable-method for CPU0) introduced
checks for the enable method on CPU0 (to be later used with CPU
suspend). However, if the kernel is compiled for UP and a DT file is
used with a method like 'spin-table', Linux complains about 'invalid
enable method'. This patch turns it into an 'unsupported enable method'
warning.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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Unable to handle kernel NULL pointer dereference at virtual address 00000008
pgd = d5300000
[00000008] *pgd=0d265831, *pte=00000000, *ppte=00000000
Internal error: Oops: 17 [#1] PREEMPT ARM
CPU: 0 PID: 2295 Comm: vlc Not tainted 3.11.0+ #755
task: dee74800 ti: e213c000 task.ti: e213c000
PC is at snd_pcm_info+0xc8/0xd8
LR is at 0x30232065
pc : [<c031b52c>] lr : [<30232065>] psr: a0070013
sp : e213dea8 ip : d81cb0d0 fp : c05f7678
r10: c05f7770 r9 : fffffdfd r8 : 00000000
r7 : d8a968a8 r6 : d8a96800 r5 : d8a96200 r4 : d81cb000
r3 : 00000000 r2 : d81cb000 r1 : 00000001 r0 : d8a96200
Flags: NzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user
Control: 10c5387d Table: 15300019 DAC: 00000015
Process vlc (pid: 2295, stack limit = 0xe213c248)
[<c031b52c>] (snd_pcm_info) from [<c031b570>] (snd_pcm_info_user+0x34/0x9c)
[<c031b570>] (snd_pcm_info_user) from [<c03164a4>] (snd_pcm_control_ioctl+0x274/0x280)
[<c03164a4>] (snd_pcm_control_ioctl) from [<c0311458>] (snd_ctl_ioctl+0xc0/0x55c)
[<c0311458>] (snd_ctl_ioctl) from [<c00eca84>] (do_vfs_ioctl+0x80/0x31c)
[<c00eca84>] (do_vfs_ioctl) from [<c00ecd5c>] (SyS_ioctl+0x3c/0x60)
[<c00ecd5c>] (SyS_ioctl) from [<c000e500>] (ret_fast_syscall+0x0/0x48)
Code: e1a00005 e59530dc e3a01001 e1a02004 (e5933008)
---[ end trace cb3d9bdb8dfefb3c ]---
This is provoked when the ASoC front end is open along with its backend,
(which causes the backend to have a runtime assigned to it) and then the
SNDRV_CTL_IOCTL_PCM_INFO is requested for the (visible) backend device.
Resolve this by ensuring that ASoC internal backend devices are not
visible to userspace, just as the commentry for snd_pcm_new_internal()
says it should be.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Mark Brown <broonie@linaro.org>
Cc: <stable@vger.kernel.org> [v3.4+]
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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That explains why I was seeing 2 consecutive "Turning eDP VDD off"
messages.
Regression introduced by:
commit bf13e81b904a37d94d83dd6c3b53a147719a3ead
Author: Jani Nikula <jani.nikula@intel.com>
Date: Fri Sep 6 07:40:05 2013 +0300
drm/i915: add support for per-pipe power sequencing on vlv
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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In
commit 6efdf354ddb186c6604d1692075421e8d2c740e9
Author: Imre Deak <imre.deak@intel.com>
Date: Wed Oct 16 17:25:52 2013 +0300
the check for i915_disable_power_well flag was removed by overlook,
so add it back now.
Reported-by: Paulo Zanoni <paulo.zanoni@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>,
Signed-off-by: Philippe Proulx <philippe.proulx@savoirfairelinux.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Johan has been conned^Wgracious in accepting the maintainership of the
USB serial drivers, especially as he's been doing all of the real work
for the past few years.
At the same time, remove a bunch of old entries for USB serial drivers
that don't make sense anymore, given that the developers are no longer
around, and individual driver maintainerships for tiny things like this
is pretty pointless.
Acked-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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There is a possible race between setting has_pgste and reallocation of the
page_table, change the order to fix this.
Also page_table_alloc_pgste can fail, in that case we need to backpropagte this
as -ENOMEM to the caller of page_table_realloc.
Based on a patch by Christian Borntraeger <borntraeger@de.ibm.com>.
Reviewed-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Dominik Dingel <dingel@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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A bg that's been flagged "corrupt" by definition has no free blocks,
so that the allocator won't be tempted to use the damaged bg.
Therefore, we shouldn't count the clusters in the damaged group when
calculating free counts.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Reviewed-by: Zheng Liu <wenqing.lz@taobao.com>
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This adds a driver for touchscreens using the zforce infrared
technology from Neonode connected via i2c to the host system.
It supports multitouch with up to two fingers and tracking of the
contacts in hardware.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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Renesas ARM platforms are transitioning from single-platform to
multi-platform kernels using the new ARCH_SHMOBILE_MULTI. Make the
driver available on all ARM platforms to enable it on both ARCH_SHMOBILE
and ARCH_SHMOBILE_MULTI, and increase build testing coverage with
COMPILE_TEST.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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dev->hint_events_per_packet is guaranteed to be >= packet_size.
so an extra max() call is not needed.
Signed-off-by: Kang Hu <hukangustc@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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Moust (if not all) modern software, including X, uses /dev/eventX rather than
the legacy /dev/mouseX devices. It therefore makes sense for general-purpose
(distro) kernels to use MOUSEDV=m (or even n), so let's drop the EXPERT=y
requirement.
Signed-off-by: Tom Gundersen <teg@jklm.no>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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There is plenty of consumer hardware (e.g., mac books) that does not use AT
keyboards or PS/2 mice. It therefore makes sense for distro kernels to
build the related drivers as modules to avoid loading them on hardware that
does not need them. As such, these options should no longer be protected by
EXPERT.
Moreover, building these drivers as modules gets rid of the following ugly
error during boot:
[ 2.337745] i8042: PNP: No PS/2 controller found. Probing ports directly.
[ 3.439537] i8042: No controller found
Signed-off-by: Tom Gundersen <teg@jklm.no>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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This allows the module to be autoloaded in the common case.
In order to work on non-PnP systems the module should be compiled in or
loaded unconditionally at boot (c.f. modules-load.d(5)), as before.
Signed-off-by: Tom Gundersen <teg@jklm.no>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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evdev always tries to allocate the event buffer for clients using
kzalloc rather than vmalloc, presumably to avoid mapping overhead where
possible. However, drivers like bcm5974, which claims support for
reporting 16 fingers simultaneously, can have an extraordinarily large
buffer. The resultant contiguous order-4 allocation attempt fails due
to fragmentation, and the device is thus unusable until reboot.
Try kzalloc if we can to avoid the mapping overhead, but if that fails,
fall back to vzalloc.
Signed-off-by: Daniel Stone <daniels@collabora.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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Main hardware parts of the (Armada 370 based) NETGEAR ReadyNAS 104 are
supported by mainline kernel (USB 3.0 rear ports, USB 2.0 front port,
Gigabit controller and PHYs, serial port, LEDs, buttons, SATA ports,
G762 fan controller) and referenced in provided .dts file. Some additonal
work remains for:
- Intersil ISL12057 I2C RTC and Alarm chip: working driver but needs
to be splitted for submission of RTC part first;
- Front LCD (Winstar 1602G): driver needs to be written
- Armada NAND controller (to access onboard 128MB of NAND): support
being pushed by @free-electrons people
- 4 front SATA LEDs controlled via GPIO brought by NXP PCA9554:
driver is available upstream. Not referenced/tested yet.
but the device is usable w/o those.
Signed-off-by: Arnaud Ebalard <arno@natisbad.org>
Acked-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
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If hardware (or firmware) detects palm on the surface of the device it does
not mean that the data packet is bad from the protocol standpoint. Instead
of reporting PSMOUSE_BAD_DATA in this case simply threat it as if nothing
touches the surface.
BugLink: http://bugs.launchpad.net/bugs/1229361
Signed-off-by: Joseph Salisbury <joseph.salisbury@canonical.com>
Tested-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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Remove original filter from rsnd_dma_init(),
and use SH-DMA suitable filter.
This new style can be used from Device Tree.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
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Most of the kernel code assumes that max*pfn is maximum pfns because
the physical start of memory is expected to be PFN0. Since this
assumption is not true on ARM architectures, the meaning of max*pfn
is number of memory pages. This is done to keep drivers happy which
are making use of of these variable to calculate the dma bounce limit
using dma_mask.
Now since we have a architecture override possibility for DMAable
maximum pfns, lets make meaning of max*pfns as maximum pnfs on ARM
as well.
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Nicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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DMA bounce limit is the maximum direct DMA'able memory beyond which
bounce buffers has to be used to perform dma operations. MMC queue layr
relies on dma_mask but its calculation is based on max_*pfn which
don't have uniform meaning across architectures. So make use of
dma_max_pfn() which is expected to return the DMAable maximum pfn
value across architectures.
Cc: Chris Ball <cjb@laptop.org>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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DMA bounce limit is the maximum direct DMA'able memory beyond which
bounce buffers has to be used to perform dma operations. SCSI driver
relies on dma_mask but its calculation is based on max_*pfn which
don't have uniform meaning across architectures. So make use of
dma_max_pfn() which is expected to return the DMAable maximum pfn
value across architectures.
Cc: linux-scsi@vger.kernel.org
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Most of the kernel assumes that PFN0 is the start of the physical
memory (RAM). This assumptions is not true on most of the ARM SOCs
and hence and if one try to update the ARM port to follow the assumptions,
we end of breaking the dma bounce limit for few block layer drivers.
One such example is trying to unify the meaning of max*_pfn on ARM
as the bootmem layer expects, breaks few block layer driver dma
bounce limit.
To fix this problem, we introduce dma_max_pfn(dev) generic helper with
a possibility of override from the architecture code. The helper converts
a DMA bitmask of bits to a block PFN number. In all the generic cases,
it is just "dev->dma_mask >> PAGE_SHIFT" and hence default behavior
is maintained as is.
Subsequent patches will make use of the helper. No functional change.
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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blk_queue_bounce_limit()
The blk_queue_bounce_limit() API parameter 'dma_mask' is actually the
maximum address the device can handle rather than a dma_mask. Rename
it accordingly to avoid it being interpreted as dma_mask.
No functional change.
The idea is to fix the bad assumptions about dma_mask wherever it could
be miss-interpreted.
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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We need to start treating DMA masks as something which is specific to
the bus that the device resides on, otherwise we're going to hit all
sorts of nasty issues with LPAE and 32-bit DMA controllers in >32-bit
systems, where memory is offset from PFN 0.
In order to start doing this, we convert the DMA mask to a PFN using
the device specific dma_to_pfn() macro. This is the reverse of the
pfn_to_dma() macro which is used to get the DMA address for the device.
This gives us a PFN mask, which we can then check against the PFN
limit of the DMA zone.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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The dma mask is not configured in the current code.
This was triggered by soc-dmaengine-pcm which allocate the dma
buffers with the imx-sdma as device.
This commit fix audio on imx31.
Signed-off-by: Philippe Rétornaz <philippe.retornaz@epfl.ch>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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This driver doesn't need to directly access DMA masks if it uses the
platform_device_register_full() API rather than
platform_device_register_simple() - the former function can initialize
the DMA mask appropriately.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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dcdbas was explicitly initializing DMA masks thusly:
dcdbas_pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
dcdbas_pdev->dev.dma_mask = &dcdbas_pdev->dev.coherent_dma_mask;
which bypasses the architecture check. Moreover, it is creating the
dcdbas_pdev device itself, and using the platform_device_register_full()
avoids some of this explicit initialization.
Convert the driver to use platform_device_register_full(), and as it
makes use of coherent DMA, also call dma_set_coherent_mask() to ensure
that the architecture gets to check the mask.
Tested-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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register_platform_device_full() can setup the DMA mask provided the
appropriate member is set in struct platform_device_info. So lets
make that be the case. This avoids a direct reference to the DMA
masks by this driver.
While here, add the dma_set_mask_and_coherent() call which the DMA API
requires DMA-using drivers to call.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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messing with dma masks
Use platform_device_register_full() for those drivers which can, to
avoid messing directly with DMA masks. This can only be done when
the driver does not need to access the allocated musb platform device
from within its callbacks, which may be called during the musb
device probing.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Don't statically allocate struct device's in modules, and shut the
warning up with an empty release() function. There's a reason that
warning is there and that's not for people to hide in this way. It's
there to persuade people to use the correct APIs to allocate platform
devices.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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The correct way for a driver to specify the coherent DMA mask is
not to directly access the field in the struct device, but to use
dma_set_coherent_mask(). Only arch and bus code should access this
member directly.
Convert all direct write accesses to using the correct API.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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The correct way for a driver to specify the coherent DMA mask is
not to directly access the field in the struct device, but to use
dma_set_coherent_mask(). Only arch and bus code should access this
member directly.
Convert all direct write accesses to using the correct API.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Acked-by: Felipe Balbi <balbi@ti.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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The correct way for a driver to specify the coherent DMA mask is
not to directly access the field in the struct device, but to use
dma_set_coherent_mask(). Only arch and bus code should access this
member directly.
Convert all direct write accesses to using the correct API.
Acked-by: Felipe Balbi <balbi@ti.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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The code sequence:
dev->coherent_dma_mask = DMA_BIT_MASK(24);
dev->dma_mask = &dev->coherent_dma_mask;
bypasses the architectures check on the DMA mask. It can be replaced
with dma_coerce_mask_and_coherent(), avoiding the direct initialization
of this mask.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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The code sequence:
pdev->dev.coherent_dma_mask = DMA_BIT_MASK(64);
pdev->dev.dma_mask = &pdev->dev.coherent_dma_mask;
bypasses the architectures check on the DMA mask. It can be replaced
with dma_coerce_mask_and_coherent(), avoiding the direct initialization
of this mask.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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The code sequence:
pldat->pdev->dev.coherent_dma_mask = 0xFFFFFFFF;
pldat->pdev->dev.dma_mask = &pldat->pdev->dev.coherent_dma_mask;
bypasses the architectures check on the DMA mask. It can be replaced
with dma_coerce_mask_and_coherent(), avoiding the direct initialization
of this mask.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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The code sequence:
dev->dma_mask = &dev->coherent_dma_mask;
dev->coherent_dma_mask = dma_mask;
bypasses the architectures check on the DMA mask. It can be replaced
with dma_coerce_mask_and_coherent(), avoiding the direct initialization
of this mask.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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The code sequence:
isp->raw_dmamask = DMA_BIT_MASK(32);
isp->dev->dma_mask = &isp->raw_dmamask;
isp->dev->coherent_dma_mask = DMA_BIT_MASK(32);
bypasses the architectures check on the DMA mask. It can be replaced
with dma_coerce_mask_and_coherent(), avoiding the direct initialization
of this mask.
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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This code sequence:
if (!pdev->dev.dma_mask) {
pdev->dev.dma_mask = &pdev->dev.coherent_dma_mask;
pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
}
bypasses the architectures check on the DMA mask. It can be replaced
with dma_coerce_mask_and_coherent(), avoiding the direct initialization
of this mask.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Convert this code sequence:
pdev->dev.coherent_dma_mask = DMA_BIT_MASK(64);
pdev->dev.dma_mask = &pdev->dev.coherent_dma_mask;
to use dma_coerce_mask_and_coherent() to avoid bypassing the architecture
check on the DMA mask.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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This code sequence is unsafe in modules:
static u64 mask = DMA_BIT_MASK(something);
...
if (!dev->dma_mask)
dev->dma_mask = &mask;
as if a module is reloaded, the mask will be pointing at the original
module's mask address, and this can lead to oopses. Moreover, they
all follow this with:
if (!dev->coherent_dma_mask)
dev->coherent_dma_mask = mask;
where 'mask' is the same value as the statically defined mask, and this
bypasses the architecture's check on whether the DMA mask is possible.
Fix these issues by using the new dma_coerce_coherent_and_mask()
function.
Acked-by: Mark Brown <broonie@linaro.org>
Acked-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Many drivers contain code such as:
dev->dma_mask = &dev->coherent_dma_mask;
dev->coherent_dma_mask = MASK;
Let's move this pattern out of drivers and have the DMA API provide a
helper for it. This helper uses dma_set_mask_and_coherent() to allow
platform issues to be properly dealt with via dma_set_mask()/
dma_is_supported().
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Add a comment to explain why this driver doesn't call any of the DMA
API dma_set_mask() functions.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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The DMA API requires drivers to call the appropriate dma_set_mask()
functions before doing any DMA mapping. Add this required call to
the AMBA PL08x driver.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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The DMA API requires drivers to call the appropriate dma_set_mask()
functions before doing any DMA mapping. Add this required call to
the AMBA PL330 driver.
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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The DMA API requires drivers to call the appropriate dma_set_mask()
functions before doing any DMA mapping. Add this required call to
the AMBA PL08x driver.
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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