When updating the irq_chip and msi_domain_ops, the code checkes for
already present functions.
When more then one ITS controller are present in the system,
irq_chip and msi_domain_ops got already set and a warning is invoked.
This patch deletes the warning, as the funtions are just already set to
the needed callbacks.
staging: fsl-mc: add quirk handling for dpseci objects < 4.0
dpseci objects < 4.0 are not coherent-- in spite of the fact
that the MC reports them to be coherent in certain versions.
Add a special case to set the no shareability flag for dpseci
objects < 4.0.
Signed-off-by: Horia Geanta <horia.geanta@nxp.com>
(Stuart: reworded commit message, updated comment in patch) Signed-off-by: Stuart Yoder <stuart.yoder@nxp.com> Acked-by: German Rivera <german.rivera@nxp.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
staging: fsl-mc: get version of root dprc from MC hardware
The root dprc is discovered as a platform device in the device tree. The
version of that dprc was previously set using hardcoded values from the API
header in the kernel). This patch removes the use of the hardcoded version
numbers and instead reads the actual dprc version from the hardware.
staging: fsl-mc: don't use object versions to make binding decisions
Up until now if the object version expected by a driver (in the API header
file) did not match the actual object version in the MC hardware the bus
driver refused to bind the object to the driver or printed out WARN_ON
dumps.
This patch removes those checks, and the responsibility of object version
checking should now be done in the object drivers themselves. If the actual
version discovered is not supported, the driver's probe function should fail.
Drivers should use version checks to support new features and provide
backwards compatibility if at all possible.
This patch also removes the checks that caused bus driver probing to fail
if the overall MC version discovered did not match the firmware version
from the API header...this was too strict. The overall MC version is
informational like a release number, and continues to be printed in the
boot log.
Signed-off-by: Itai Katz <itai.katz@nxp.com>
(Stuart: reworded commit log) Signed-off-by: Stuart Yoder <stuart.yoder@nxp.com> Acked-by: German Rivera <german.rivera@nxp.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Dan Carpenter [Fri, 8 Apr 2016 13:02:35 +0000 (16:02 +0300)]
staging: lowmemorykiller: remove bogus NULL check
The NULL checking here doesn't make sense, so it causes a static checker
warning. It turns out that p->mm can't be NULL so the inconsistency is
harmless and we should just remove the check.
staging: fsl-mc: get rid of mutex_locked variables
Remove mutex_locked variables which are used to determine whether mutex is
locked, instead add another label to unlock mutex on premature exits due to
an error.
This patch also addresses the folowing warnings reported by coccinelle:
drivers/staging/fsl-mc/bus/mc-allocator.c:237:1-7: preceding lock on line 204
drivers/staging/fsl-mc/bus/mc-allocator.c:89:1-7: preceding lock on line 57
drivers/staging/fsl-mc/bus/mc-allocator.c:157:1-7: preceding lock on line 124
Nicholas Sim [Tue, 5 Apr 2016 16:21:32 +0000 (17:21 +0100)]
staging: rtl8192u: rewrite NULL comparison for pointers
When testing pointers, it is not necessary to explicitly compare to
NULL. Rewrite if condition as (!ptr) or (ptr) as suggested in
Documentation/CodingStyle
Signed-off-by: Nicholas Sim <nicholassimws@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Manu Kumar [Mon, 4 Apr 2016 23:53:01 +0000 (16:53 -0700)]
staging: skein: cleanup: add operator white space
Added white space between operators and operands. Because this sometimes
maxed out the column width, some expressions were broken up into multiple
lines, and comments were moved appropriately.
Signed-off-by: Manu Kumar <maraku@gmx.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/staging/dgnc: Added spaces around a bitwise OR.
Coding rules request placing bitwise OR operators between empty spaces
for better readibility. This patch applies this format to a line in
dgnc_tty.c file.
Signed-off-by: Juanma de Hoyos <juanmahv@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Staging: wlan-ng: memory allocated inside mkimage() is not freed if subsequent calls fails.
This patch frees memory allocated inside mkimage() in case mkimage()
or any other subsequent calls inside prism2_fwapply() from prism2fw.c
file fails. To fix this I introduces goto labels where the free
operation is done in case some operations fails. After the introduction
of goto labels has been done, in order to use the same return path,
"return x" instuctions were replaced with "goto" instuctions.
Markus Böhme [Wed, 6 Apr 2016 21:53:39 +0000 (23:53 +0200)]
staging: android: ion: make locally used functions static
Functions ion_handle_put and ion_handle_get_by_id are only used locally
in ion.c, so they should be made static as they used to be before 9590232b ("staging/android/ion : fix a race condition in the ion driver").
Signed-off-by: Markus Böhme <markus.boehme@mailbox.org> Reviewed-by: Sumit Semwal <sumit.semwal@linaro.org> Reviewed-by: Laura Abbott <labbott@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
staging/android: drop sync_file_install() and sync_file_put()
These two functions are just wrappers for one line functions, they
call fd_install() and fput() respectively, so just get rid of them
and use fd_install() and fput() directly for more simplicity.
Change SYNC_IOC_FILE_INFO (former SYNC_IOC_FENCE_INFO) behaviour to avoid
future API breaks and optimize buffer allocation.
Now num_fences can be filled by the caller to inform how many fences it
wants to retrieve from the kernel. If the num_fences passed is greater
than zero info->sync_fence_info should point to a buffer with enough space
to fit all fences.
However if num_fences passed to the kernel is 0, the kernel will reply
with number of fences of the sync_file.
Sending first an ioctl with num_fences = 0 can optimize buffer allocation,
in a first call with num_fences = 0 userspace will receive the actual
number of fences in the num_fences filed.
Then it can allocate a buffer with the correct size on sync_fence_info and
call SYNC_IOC_FILE_INFO again, but now with the actual value of num_fences
in the sync_file.
info->sync_fence_info was converted to __u64 pointer to prevent 32bit
compatibility issues. And a flags member was added.
An example userspace code for the later would be:
struct sync_file_info *info;
int err, size, num_fences;
Finally the IOCTLs numbers were changed to avoid any potential old
userspace running the old API to get weird errors. Changing the opcodes
will make them fail right away. This is just a precaution, there no
upstream users of these interfaces yet and the only user is Android, but
we don't expect anyone trying to run android userspace and all it
dependencies on top of upstream kernels.
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk> Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Acked-by: Greg Hackmann <ghackmann@google.com> Acked-by: Rob Clark <robdclark@gmail.com> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This function had copies in 3 different files. Unify them in kernel.h.
Cc: Joe Perches <joe@perches.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: David Airlie <airlied@linux.ie> Cc: Daniel Vetter <daniel.vetter@intel.com> Cc: Rob Clark <robdclark@gmail.com> Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk> Acked-by: Daniel Vetter <daniel.vetter@intel.com> [drm/i915/] Acked-by: Rob Clark <robdclark@gmail.com> [drm/msm/] Acked-by: Lucas Stach <l.stach@pengutronix.de> [drm/etinav/] Acked-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
staging: comedi: ni_mio_common: simplify AI LINKC handling
Simplfy the LINKC handing for the analog input dma by moving it into
the main interrupt handler. This function already hold the spinlock
mite_channel_lock so call mite_sync_dma() directly instead of using
the helper function.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Reviewed-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
staging: comedi: ni_mio_common: fix interrupt handler for dev->read_subdev
There may not be a dev->read_subdev, i.e. an analog input subdevice, that
supports async commands. If it doesn't exist the interrupt/dma will never
be enabled. Fix ni_E_interrupt() so that the analog input subdevice is
only handled if it exists.
This also fixes minor NULL dereference issue in handle_a_interrupt().
If the dev->read_subdev is NULL the comedi_async pointer (s->async) will
not be allocated by the device postconfig so there is no way to get a
valid comedi_cmd (&s->async->cmd).
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Reviewed-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
staging: comedi: ni_mio_common: fix interrupt handler for dev->write_subdev
There may not be a dev->write_subdev, i.e. an analog output subdevice, that
supports async commands. If it doesn't exist the interrupt/dma will never
be enabled. Fix ni_E_interrupt() so that the analog output subdevice is
only handled if it exists.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Reviewed-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
staging: comedi: mite: check for transfer errors in mite_ack_linkc()
Currently only some of the users of mite dma check for transfer errors.
The ni_mio_common code does the check for the analog input and analog
output subdevices. The m-series digital I/O subdevice and the counter
subdevices (handled by ni_tiocmd) do not check.
The ni_pcidio driver checks for the digital input subdevice.
The ni_660x driver counter subdevices (handled by ni_tiocmd) also do
not check.
Move the transfer error checking into mite_ack_linkc() so that the
drivers that use mite don't have to deal with it. This also makes
sure that all the subdevices that use mite for dma will cancel the
async command if a transfer error is detected.
Simplfy the transfer error check by just checking the CHSR_XFERR bit.
This bit will be set if one or more transfer processes terminated with
an error. The actual error is determined by the LERR, MERR, and DERR
bits.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Reviewed-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
staging: comedi: mite: remove BUG_ON() in MITE_IODWBSR_1_WSIZE_bits()
Prior to calling this function pci_ioremap_bar() is called. If the
pci_resource_len(), i.e. the 'size', was 0 the ioremap would fail
so this function would never be called. So the first BUG_ON() can
never occur.
The 'order' returned by ilog2() will always be > 0 so the second
BUG_ON() will also never occur.
Remove the unnecessary BUG_ON() checks and tidy up the function.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Reviewed-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The struct mite_channel 'dir' member specifies if the dma is input
or output. Wrap the mite_sync_input_dma() and mite_sync_output_dma()
functions with a single mite_sync_dma() so that the drivers don't
have to worry about the sync direction.
The functions that actually sync the input/output dma currently return
-1 if an overflow/underrun is detected otherwise they return 0. If an
overflow/underrun is detected the async->event COMEDI_CB_OVERFLOW is
also set.
The callers never check the return value anyway so just make the
functions return void. The async->event can be checked if necessary
to detect any errors.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Reviewed-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
staging: comedi: mite: don't expose unnecessary register/bit info
Most of the mite registers are only accessed by the mite driver.
There is no reason to expose the register/bit info. Remove this
info from the header.
For aesthetics, convert the bit info enums into defines and use
the BIT() macro to define them. Tidy up the inline functions for
the retry limit and drq reqs bits in the config registers.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Reviewed-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Introduce a helper function to handle the ack of a LINKC interrupt.
Tidy up the drivers that use the new helper.
The extra check for CHSR_INT in the ni_pcidio driver is not necessary.
This bit will be set if any of the interrupt sources, including CHSR_LINKC,
have generated an interrupt. Remove the extra check.
The mite_get_status() function is now only used by the mite driver.
Make it static and remove the export.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Reviewed-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The functions that get the number of bytes written to and read from
memory are only used internally by the mite driver when syncing the
dma channel. Make them static and remove the exports.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Reviewed-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This exported function is not used by any of the comedi drivers. The
only call point in mite.c is commented out. Remove the unused function
and the export.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Reviewed-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The inline helper ni_stc_dma_channel_select_bitfield() returns the
bits needed to select a MITE channel to use for DMA. The MITE code
is setup to handle up to 8 channels but in reality only channels 0
to 3 are used by most of the drivers. The PCI-6032E and PCI-6033E
boards can also use channels 4 and 5.
For aesthetics, convert this inline function into a macro and
remove the BUG() which will never occur.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Reviewed-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
staging: comedi: ni_mio_common: tidy up ni_gpct_write_register()
The 'bits' value passed to this function is properly set by the callers
so the BUG_ON() can never occur when writing to the NITIO_G[01]_INT_ENA
and NITIO_G01_RESET registers. Remove the BUG_ON() checks.
For aesthetic, also remove the static const variables. They don't add
any additional clarity.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Reviewed-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
staging: comedi: ni_mio_common: tidy up AO scan begin
The (*do_cmdtest) validates that the cmd->scan_begin_src will only be
TRIG_TIMER or TRIG_EXT. Refactor ni_ao_cmd_set_update() and remove the
BUG() which can never occur.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Reviewed-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
staging: comedi: ni_mio_common: tidy up AO trigger selection
The AO subdevice (*cancel), ni_ao_reset(), always sets the private
data 'ao_trigger_select' to 0. So when a command is started the
'trigsel' value in ni_ao_cmd_set_trigger() will always start as 0.
Remove the unnecessary member from the private data.
The (*do_cmdtest) validates that the cmd->start_src will only be
TRIG_INT or TRIG_EXT. Refactor ni_ao_cmd_set_trigger() and remove
the BUG() which can never occur.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Reviewed-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
projects / linux-beck.git / log