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Enable HCD_BH flag for musb host controller driver.
This improves the MSC/UVC through put. With this enabled
even 640x480@30fps webcam streaming is also supported.
Signed-off-by: George Cherian <george.cherian@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty/serial fixes from Greg KH:
"Here are some tty and serial driver fixes for 4.0-rc3.
Along with the atime fix that you know about, here are some other
serial driver bugfixes as well. Most notable is a wait_until_sent
bugfix that was traced back to being around since before 2.6.12 that
Johan has fixed up.
All have been in linux-next successfully"
* tag 'tty-4.0-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
TTY: fix tty_wait_until_sent maximum timeout
TTY: fix tty_wait_until_sent on 64-bit machines
USB: serial: fix infinite wait_until_sent timeout
TTY: bfin_jtag_comm: remove incorrect wait_until_sent operation
net: irda: fix wait_until_sent poll timeout
serial: uapi: Declare all userspace-visible io types
serial: core: Fix iotype userspace breakage
serial: sprd: Fix missing spin_unlock in sprd_handle_irq()
console: Fix console name size mismatch
tty: fix up atime/mtime mess, take four
serial: 8250_dw: Fix get_mctrl behaviour
serial:8250:8250_pci: delete unneeded quirk entries
serial:8250:8250_pci: fix redundant entry report for WCH_CH352_2S
Change email address for 8250_pci
serial: 8250: Revert "tty: serial: 8250_core: read only RX if there is something in the FIFO"
Revert "tty/serial: of_serial: add DT alias ID handling"
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Currently tty_wait_until_sent may take up to twice as long as the
requested timeout while waiting for driver and hardware buffers to
drain.
Fix this by taking the remaining number of jiffies after waiting for
driver buffers to drain into account so that the timeout actually
becomes a maximum timeout as it is documented to be.
Note that this specifically implies tighter timings when closing a port
as a consequence of actually honouring the port closing-wait setting
for drivers relying on tty_wait_until_sent_from_close (e.g. via
tty_port_close_start).
Signed-off-by: Johan Hovold <johan@kernel.org>
Reviewed-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Fix overflow bug in tty_wait_until_sent on 64-bit machines, where an
infinite timeout (0) would be passed to the underlying tty-driver's
wait_until_sent-operation as a negative timeout (-1), causing it to
return immediately.
This manifests itself for example as tcdrain() returning immediately,
drivers not honouring the drain flags when setting terminal attributes,
or even dropped data on close as a requested infinite closing-wait
timeout would be ignored.
The first symptom was reported by Asier LLANO who noted that tcdrain()
returned prematurely when using the ftdi_sio usb-serial driver.
Fix this by passing 0 rather than MAX_SCHEDULE_TIMEOUT (LONG_MAX) to the
underlying tty driver.
Note that the serial-core wait_until_sent-implementation is not affected
by this bug due to a lucky chance (comparison to an unsigned maximum
timeout), and neither is the cyclades one that had an explicit check for
negative timeouts, but all other tty drivers appear to be affected.
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Cc: stable <stable@vger.kernel.org> # v2.6.12
Reported-by: ZIV-Asier Llano Palacios <asier.llano@cgglobal.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Reviewed-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Make sure to handle an infinite timeout (0).
Note that wait_until_sent is currently never called with a 0-timeout
argument due to a bug in tty_wait_until_sent.
Fixes: dcf010503966 ("USB: serial: add generic wait_until_sent
implementation")
Cc: stable <stable@vger.kernel.org> # v3.10
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Remove incorrect and redundant wait_until_sent operation, which waits
for the driver buffer rather than any hardware buffers to drain,
something which is already taken care of by the tty layer (and
chars_in_buffer).
Signed-off-by: Johan Hovold <johan@kernel.org>
Reviewed-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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In case an infinite timeout (0) is requested, the irda wait_until_sent
implementation would use a zero poll timeout rather than the default
200ms.
Note that wait_until_sent is currently never called with a 0-timeout
argument due to a bug in tty_wait_until_sent.
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Cc: stable <stable@vger.kernel.org> # v2.6.12
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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ioctl(TIOCGSERIAL|TIOCSSERIAL) report and can change the port->iotype.
UART drivers use the UPIO_* definitions, but the uapi header defines
parallel values and userspace uses these parallel values for ioctls;
thus the userspace values are definitive.
Define UPIO_* iotypes in terms of the uapi defines, SERIAL_IO_*;
extend the uapi defines to include all values in use by the serial
core.
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 3ffb1a8193bea ("serial: core: Add big-endian iotype")
re-numbered userspace-dependent values; ioctl(TIOCSSERIAL) can
assign the port iotype (which is expected to match the selected
i/o accessors), so iotype values must not be changed.
Cc: Kevin Cernekee <cernekee@gmail.com>
Cc: <stable@vger.kernel.org> # 3.19+
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Reviewed-by: Kevin Cernekee <cernekee@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Fix return from sprd_handle_irq() with spin_lock held.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Reviewed-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 6ae9200f2cab7 ("enlarge console.name") increased the storage
for the console name to 16 bytes, but not the corresponding
struct console_cmdline::name storage. Console names longer than
8 bytes cause read beyond end-of-string and failure to match
console; I'm not sure if there are other unexpected consequences.
Cc: <stable@vger.kernel.org> # 2.6.22+
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This problem was taken care of three times already in
* b0de59b5733d18b0d1974a060860a8b5c1b36a2e (TTY: do not update
atime/mtime on read/write),
* 37b7f3c76595e23257f61bd80b223de8658617ee (TTY: fix atime/mtime
regression), and
* b0b885657b6c8ef63a46bc9299b2a7715d19acde (tty: fix up atime/mtime
mess, take three)
But it still misses one point. As John Paul correctly points out, we
do not care about setting date. If somebody ever changes wall
time backwards (by mistake for example), tty timestamps are never
updated until the original wall time passes.
So check the absolute difference of times and if it large than "8
seconds or so", always update the time. That means we will update
immediatelly when changing time. Ergo, CAP_SYS_TIME can foul the
check, but it was always that way.
Thanks John for serving me this so nicely debugged.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Reported-by: John Paul Perry <john_paul.perry@alcatel-lucent.com>
Cc: <stable@vger.kernel.org> # all, as b0b885657 was backported
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Fixed behaviour of get_mctrl() serial driver function as documented in:
https://www.kernel.org/doc/Documentation/serial/driver
Added device-tree properties 'dcd-override', 'dsr-override',
'cts-override', and 'ri-override' specific to the Synopsis 8250
DesignWare UART driver. Allows one to force Data Carrier Detect,
Clear To Send, and Data Set Ready signals to permanently be reported as
active. The Ring indicator can be forced to be reported as inactive.
It is possible that if modem control signalling is enabled on a port
that doesn't have these pins (e.g. - a simple two wire Tx/Rx port), the
driver can hang indefinitely waiting for the state to change. The new
DT properties allow the driver to ignore the state of these pins on
serial ports that don't support them, as recommended in the kernel
documentation.
Reviewed-by: JD (Jiandong) Zheng <jdzheng@broadcom.com>
Signed-off-by: Jonathan Richardson <jonathar@broadcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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These quirk entries have the same effect as default
quirk entry, so we can just delete them.
Signed-off-by: Wang YanQing <udknight@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Commit 8b5c913f7ee6464849570bacb6bcd9ef0eaf7dce
("serial: 8250_pci: Add WCH CH352 quirk to avoid Xscale detection")
trigger one redundant entry report message.
This patch fix it.
Reported-by: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Wang YanQing <udknight@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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I'm still receiving reports to my email address, so let's point this
at the linux-serial mailing list instead.
Cc: <stable@vger.kernel.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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something in the FIFO"
This reverts commit 0aa525d11859c1a4d5b78fdc704148e2ae03ae13.
The conditional RX-FIFO read seems to cause spurious interrupts and we
see just:
|serial8250: too much work for irq29
The previous behaviour was "default" for decades and Marvell's 88f6282 SoC
might not be the only that relies on it. Therefore the Omap fix is
reverted for now.
Fixes: 0aa525d11859 ("tty: serial: 8250_core: read only RX if there is
something in the FIFO")
Reported-By: Nicolas Schichan <nschichan@freebox.fr>
Debuged-By: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This reverts commit 6d01bb9dc82a60580f749062a48cb47cd5caca07.
The exact same code was added in commit 3239fd31d4 (serial: of-serial: fetch
line number from DT) a few lined above. Doing this once should be enough.
Cc: Rob Herring <robh@kernel.org>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging driver fixes from Greg KH:
"Here are some IIO and staging driver fixes for 4.0-rc3.
Details are in the shortlog, nothing major, mostly IIO fixes for
reported issues.
All have been in linux-next successfully"
* tag 'staging-4.0-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (23 commits)
staging: comedi: adv_pci1710: fix AI INSN_READ for non-zero channel
staging: comedi: vmk80xx: remove "firmware version" kernel messages
staging: comedi: comedi_isadma: fix "stalled" detect in comedi_isadma_disable_on_sample()
iio: ak8975: fix AK09911 dependencies
iio: common: ssp_sensors: Protect PM-only functions to kill warning
IIO: si7020: Allocate correct amount of memory in devm_iio_device_alloc
Revert "iio:humidity:si7020: fix pointer to i2c client"
iio: light: gp2ap020a00f: Select REGMAP_I2C
iio: light: jsa1212: Select REGMAP_I2C
iio: ad5686: fix optional reference voltage declaration
iio:adc:mcp3422 Fix incorrect scales table
iio: mxs-lradc: fix iio channel map regression
iio: imu: adis16400: Fix sign extension
staging: iio: ad2s1200: Fix sign extension
iio: mxs-lradc: only update the buffer when its conversions have finished
iio: mxs-lradc: make ADC reads not unschedule touchscreen conversions
iio: mxs-lradc: make ADC reads not disable touchscreen interrupts
iio: mxs-lradc: separate touchscreen and buffer virtual channels
iio: imu: inv_mpu6050: Prevent dereferencing NULL
iio: iadc: wait_for_completion_timeout time in jiffies
...
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Reading of analog input channels by the `INSN_READ` comedi instruction
is broken for all except channel 0. `pci171x_ai_insn_read()` calls
`pci171x_ai_read_sample()` with the wrong value for the third parameter.
It is supposed to be the current index in a channel list (which is
always of length 1 in this case, so the index should be 0), but instead
it is passing the actual channel number. `pci171x_ai_read_sample()`
checks the channel number encoded in the raw sample value read from the
hardware matches the channel number stored in the specified index of the
previously set up channel list and returns `-ENODATA` if it doesn't
match. Since the index should always be 0 in this case, the match will
fail unless the channel number is also 0. Fix it by passing 0 as the
channel index.
Note that when the bug first appeared, it was `pci171x_ai_dropout()`
that was called with the wrong parameter value. `pci171x_ai_dropout()`
got replaced with `pci171x_ai_read_sample()` in commit 7fd2dae2500d
("staging: comedi: adv_pci1710: introduce pci171x_ai_read_sample()").
Fixes: 16c7eb6047bb ("staging: comedi: adv_pci1710: always enable PCI171x_PARANOIDCHECK code")
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Cc: stable <stable@vger.kernel.org> # 3.16+
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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During the attach of this driver a couple commands are sent to the hardware
with usb_bulk_msg() to read the firmware version information. This information
is then dumped as dev_info() kernel messages. Thee messages are just added
noise and don't effect the operation of the driver.
For simplicity, remove the messages as well as the then unused functions
vmk80xx_read_eeprom() and vmk80xx_check_data_link().
This also fixes an issue reported by coverity about an out-of-bounds write
in vmk80xx_read_eeprom().
Reported-by: coverity (CID 711413)
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>
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comedi_isadma_disable_on_sample()
The "stalled" variable this function is used to detect if the DMA operation
is stalled while trying to disable DMA on a full comedi sample. The reset
of this variable should only occur when the remaining bytes of the DMA
transfer does not equal the remaining bytes from the last check.
Reported-by: coverity (CID 1271132)
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-linus
Jonathan writes:
Second round of IIO fixes for the 4.0 cycle (or round one part two really!)
These are fixes for patches in the recent merge window and are in a separate
branch to avoid rebasing the main fixes-togreg branch.
* jsa1212 - select missing REGMAP_I2C
* ssp_common - build warning fix for PM functions when PM not in use.
* ak8975 - the addition of a utility library for this driver (as part of
adding new device support) led to a dependency not being inforced
for the original driver (I2C and GPIOLIB).
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ak8975 depends on I2C and GPIOLIB, so any symbols that selects
ak8975 must have the same dependency, or we get build errors:
drivers/iio/magnetometer/ak8975.c: In function 'ak8975_who_i_am':
drivers/iio/magnetometer/ak8975.c:393:2: error: implicit declaration of function 'i2c_smbus_read_i2c_block_data' [-Werror=implicit-function-declaration]
ret = i2c_smbus_read_i2c_block_data(client, AK09912_REG_WIA1,
^
drivers/iio/magnetometer/ak8975.c: In function 'ak8975_set_mode':
drivers/iio/magnetometer/ak8975.c:431:2: error: implicit declaration of function 'i2c_smbus_write_byte_data' [-Werror=implicit-function-declaration]
ret = i2c_smbus_write_byte_data(data->client,
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: 57e73a423b1e85 ("iio: ak8975: add ak09911 and ak09912 support")
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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If CONFIG_PM_SLEEP=n:
drivers/iio/common/ssp_sensors/ssp_dev.c:644: warning: ‘ssp_suspend’ defined but not used
drivers/iio/common/ssp_sensors/ssp_dev.c:669: warning: ‘ssp_resume’ defined but not used
Protect the unused functions by #ifdef CONFIG_PM_SLEEP to fix this.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Karol Wrona <k.wrona@samsung.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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This patch adds missing 'select' statement for jsa1212 driver.
Without regmap_i2c, we get the following error when loading the module:
Unknown symbol devm_regmap_init_i2c.
Signed-off-by: Roberta Dobrescu <roberta.dobrescu@gmail.com>
Reviewed-by: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-linus
Jonathan writes:
First round of fixes for IIO in the 4.0 cycle. Note a followup
set dependent on patches in the recent merge windows will follow shortly.
* dht11 - fix a read off the end of an array, add some locking to prevent
the read function being interrupted and make sure gpio/irq lines
are not enabled for irqs during output.
* iadc - timeout should be in jiffies not msecs
* mpu6050 - avoid a null id from ACPI emumeration being dereferenced.
* mxs-lradc - fix up some interaction issues between the touchscreen driver
and iio driver. Mostly about making sure that the adc driver
only affects channels that are not being used for the
touchscreen.
* ad2s1200 - sign extension fix for a result of c type promotion.
* adis16400 - sign extension fix for a result of c type promotion.
* mcp3422 - scale table was transposed.
* ad5686 - use _optional regulator get to avoid a dummy reg being allocate
which would cause the driver to fail to initialize.
* gp2ap020a00f - select REGMAP_I2C
* si7020 - revert an incorrect cleanup up and then fix the issue that made
that cleanup seem like a good idea.
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Since only a pointer to struct i2c_client is stored in a private area
of IIO device created by the driver there's no need to allocate
sizeof(struct i2c_client) worth of storage.
Pushed to stable as this is linked to the revert patch previously.
Without this followup the original patch looks sensible.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Cc: Stable@vger.kernel.org
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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This reverts commit e0922e5e3ccb78aa0152e93dfbd1755ac39c8582.
Requested by Andrey Smirnov.
It incorrectly assumes that the level of indirection is not needed
which is not true(probably because the driver incorrectly allocates
sizeof(*client) instead of sizeof(*data) via devm_iio_device_alloc).
If you look at the code of the probe function(see below) it is easy to
see that what is being stored in the private memory of the IIO device
instance is not a copy of a 'struct i2c_client' but a pointer to an
instance passed as an argument to the probe function.
struct i2c_client **data;
int ret;
< Some code skipped >
indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*client));
if (!indio_dev)
return -ENOMEM;
data = iio_priv(indio_dev);
*data = client;
Without reverting this change any read of a raw value of this sensor
leads to a kernel oops due to a NULL pointer de-reference on my
hardware setup.
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Cc: Stable@vger.kernel.org
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This patch adds missing 'select' statement for gp2ap020a00f driver.
Without regmap_i2c, we get the following error when loading the module:
Unknown symbol devm_regmap_init_i2c.
Signed-off-by: Roberta Dobrescu <roberta.dobrescu@gmail.com>
Reviewed-by: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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When not using the "_optional" function, a dummy regulator is returned
and the driver fails to initialize.
Signed-off-by: Urs Fässler <urs.fassler@bytesatwork.ch>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Cc: stable@vger.kernel.org
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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This patch fixes uncorrect order of mcp3422_scales table, the values
was erroneously transposed.
It removes also an unused array and a wrong comment.
Signed-off-by: Angelo Compagnucci <angelo.compagnucci@gmail.com>
Cc: Stable@vger.kernel.org
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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Since commit c8231a9af8147f8a ("iio: mxs-lradc: compute temperature
from channel 8 and 9") with the removal of adc channel 9 there is
no 1-1 mapping in the channel spec.
All hwmon channel values above 9 are accessible via there index minus
one. So add a hidden iio channel 9 to fix this issue.
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Cc: Stable@vger.kernel.org
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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The intention is obviously to sign-extend a 12 bit quantity. But
because of C's promotion rules, the assignment is equivalent to "val16
&= 0xfff;". Use the proper API for this.
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Cc: Stable@vger.kernel.org
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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The line above makes vel a 12-bit quantity (st->rx[] is u8). The
intention is to sign-extend vel using bit 11 as the sign bit. But
because of C's promotion rules "vel = (vel << 4) >> 4;" is actually a
no-op, since vel is promoted to int before the inner
shift. sign_extend32 works equally well for 8 and 16 bits types, so
use that.
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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Using the touchscreen while running buffered capture results in the
buffer reporting lots of wrong values, often just zeros. This is because
we push readings to the buffer every time a touchscreen interrupt
arrives, including when the buffer's own conversions have not yet
finished. So let's only push to the buffer when its conversions are
ready.
Signed-off-by: Kristina Martšenko <kristina.martsenko@gmail.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Cc: Stable@vger.kernel.org
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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Reading a channel through sysfs, or starting a buffered capture, can
occasionally turn off the touchscreen.
This is because the read_raw() and buffer preenable()/postdisable()
callbacks unschedule current conversions on all channels. If a delay
channel happens to schedule a touchscreen conversion at the same time,
the conversion gets cancelled and the touchscreen sequence stops.
This is probably related to this note from the reference manual:
"If a delay group schedules channels to be sampled and a manual
write to the schedule field in CTRL0 occurs while the block is
discarding samples, the LRADC will switch to the new schedule
and will not sample the channels that were previously scheduled.
The time window for this to happen is very small and lasts only
while the LRADC is discarding samples."
So make the callbacks only unschedule conversions for the channels they
use. This means channel 0 for read_raw() and channels 0-5 for the buffer
(if the touchscreen is enabled). Since the touchscreen uses different
channels (6 and 7), it no longer gets turned off.
This is tested and fixes the issue on i.MX28, but hasn't been tested on
i.MX23.
Signed-off-by: Kristina Martšenko <kristina.martsenko@gmail.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Cc: Stable@vger.kernel.org
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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Reading a channel through sysfs, or starting a buffered capture, will
currently turn off the touchscreen. This is because the read_raw() and
buffer preenable()/postdisable() callbacks disable interrupts for all
LRADC channels, including those the touchscreen uses.
So make the callbacks only disable interrupts for the channels they use.
This means channel 0 for read_raw() and channels 0-5 for the buffer (if
the touchscreen is enabled). Since the touchscreen uses different
channels (6 and 7), it no longer gets turned off.
Note that only i.MX28 is affected by this issue, i.MX23 should be fine.
Signed-off-by: Kristina Martšenko <kristina.martsenko@gmail.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Cc: Stable@vger.kernel.org
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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The touchscreen was initially designed [1] to map all of its physical
channels to one virtual channel, leaving buffered capture to use the
remaining 7 virtual channels. When the touchscreen was reimplemented
[2], it was made to use four virtual channels, which overlap and
conflict with the channels the buffer uses.
As a result, when the buffer is enabled, the touchscreen's virtual
channels are remapped to whichever physical channels the buffer was
configured with, causing the touchscreen to read those instead of the
touch measurement channels. Effectively the touchscreen stops working.
So here we separate the channels again, giving the touchscreen 2 virtual
channels and the buffer 6. We can't give the touchscreen just 1 channel
as before, as the current pressure calculation requires 2 channels to be
read at the same time.
This makes the touchscreen continue to work during buffered capture. It
has been tested on i.MX28, but not on i.MX23.
[1] 06ddd353f5c8 ("iio: mxs: Implement support for touchscreen")
[2] dee05308f602 ("Staging/iio/adc/touchscreen/MXS: add interrupt driven
touch detection")
Signed-off-by: Kristina Martšenko <kristina.martsenko@gmail.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Cc: Stable@vger.kernel.org
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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When id is null, with ACPI enumeration, don't dereference it.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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The timeout value to wait_for_completion_timeout is in jiffies but
the value being passed seems like it was intended to by microseconds
Note that the timeout was extremely long thus it might be too short
now. In any case it probably should be passed through usecs_to_jiffies()
or msecs_to_jiffies()
patch is against linux-next 3.19.0-rc1 -next-20141226
patch was only compile-tested x86_64_defcofnig + CONFIG_SPMI=m
CONFIG_IIO=m, CONFIG_QCOM_SPMI_IADC=m
Signed-off-by: Nicholas Mc Guire <der.herr@hofr.at>
Acked-by: Ivan T. Ivanov <iivanov@mm-sol.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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Since setting irq-enabled GPIOs into output state is not supported
by all GPIO controllers, we need to disable the irq while requesting
sensor data. As side effect we lose a tiny bit of functionality:
Some wiring problems can't be concluded from log messages anymore.
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Harald Geyer <harald@ccbib.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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Make sure that the read function is not interrupted...
Signed-off-by: Richard Weinberger <richard@nod.at>
Acked-by: Harald Geyer <harald@ccbib.org>
Reviewed-by: Sanjeev Sharma <sanjeev_sharma@mentor.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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As we access i-1 we must not start with i=0.
Signed-off-by: Richard Weinberger <richard@nod.at>
Acked-by: Hartmut Knaack <knaack.h@gmx.de>
Acked-by: Harald Geyer <harald@ccbib.org>
Reviewed-by: Sanjeev Sharma <sanjeev_sharma@mentor.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver fixes from Greg KH:
"Here are two char/misc fixes for 4.0-rc3.
One is a reported binder driver fix needed due to a change in the mm
core that happened in 4.0-rc1. Another is a mei driver fix that
resolves a reported issue in that driver.
Both have been in linux-next for a while"
* tag 'char-misc-4.0-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
mei: make device disabled on stop unconditionally
android: binder: fix binder mmap failures
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Set the internal device state to to disabled after hardware reset in stop flow.
This will cover cases when driver was not brought to disabled state because of
an error and in stop flow we wish not to retry the reset.
Cc: <stable@vger.kernel.org> #3.10+
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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binder_update_page_range() initializes only addr and size
fields in 'struct vm_struct tmp_area;' and passes it to
map_vm_area().
Before 71394fe50146 ("mm: vmalloc: add flag preventing guard hole allocation")
this was because map_vm_area() didn't use any other fields
in vm_struct except addr and size.
Now get_vm_area_size() (used in map_vm_area()) reads vm_struct's
flags to determine whether vm area has guard hole or not.
binder_update_page_range() don't initialize flags field, so
this causes following binder mmap failures:
-----------[ cut here ]------------
WARNING: CPU: 0 PID: 1971 at mm/vmalloc.c:130
vmap_page_range_noflush+0x119/0x144()
CPU: 0 PID: 1971 Comm: healthd Not tainted 4.0.0-rc1-00399-g7da3fdc-dirty #157
Hardware name: ARM-Versatile Express
[<c001246d>] (unwind_backtrace) from [<c000f7f9>] (show_stack+0x11/0x14)
[<c000f7f9>] (show_stack) from [<c049a221>] (dump_stack+0x59/0x7c)
[<c049a221>] (dump_stack) from [<c001cf21>] (warn_slowpath_common+0x55/0x84)
[<c001cf21>] (warn_slowpath_common) from [<c001cfe3>]
(warn_slowpath_null+0x17/0x1c)
[<c001cfe3>] (warn_slowpath_null) from [<c00c66c5>]
(vmap_page_range_noflush+0x119/0x144)
[<c00c66c5>] (vmap_page_range_noflush) from [<c00c716b>] (map_vm_area+0x27/0x48)
[<c00c716b>] (map_vm_area) from [<c038ddaf>]
(binder_update_page_range+0x12f/0x27c)
[<c038ddaf>] (binder_update_page_range) from [<c038e857>]
(binder_mmap+0xbf/0x1ac)
[<c038e857>] (binder_mmap) from [<c00c2dc7>] (mmap_region+0x2eb/0x4d4)
[<c00c2dc7>] (mmap_region) from [<c00c3197>] (do_mmap_pgoff+0x1e7/0x250)
[<c00c3197>] (do_mmap_pgoff) from [<c00b35b5>] (vm_mmap_pgoff+0x45/0x60)
[<c00b35b5>] (vm_mmap_pgoff) from [<c00c1f39>] (SyS_mmap_pgoff+0x5d/0x80)
[<c00c1f39>] (SyS_mmap_pgoff) from [<c000ce81>] (ret_fast_syscall+0x1/0x5c)
---[ end trace 48c2c4b9a1349e54 ]---
binder: 1982: binder_alloc_buf failed to map page at f0e00000 in kernel
binder: binder_mmap: 1982 b6bde000-b6cdc000 alloc small buf failed -12
Use map_kernel_range_noflush() instead of map_vm_area() as this is better
API for binder's purposes and it allows to get rid of 'vm_struct tmp_area' at all.
Fixes: 71394fe50146 ("mm: vmalloc: add flag preventing guard hole allocation")
Signed-off-by: Andrey Ryabinin <a.ryabinin@samsung.com>
Reported-by: Amit Pundir <amit.pundir@linaro.org>
Tested-by: Amit Pundir <amit.pundir@linaro.org>
Acked-by: David Rientjes <rientjes@google.com>
Tested-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull "code of conflict" from Greg KH:
"This file tries to set the rational basis for our code reviews, gives
some advice on how to conduct them, and provides an excalation channel
for any kernel developers if they so desire it"
[ Let's see how this works ]
* tag 'cc-4.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
Code of Conflict
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This file provides a basic guide for how to handle conflict resolution
when it comes up in the development process.
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Arjan van de Ven <arjanvandeven@gmail.com>
Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Chris Ball <chris@printf.net>
Acked-by: Chris Mason <clm@fb.com>
Acked-by: Chris Metcalf <cmetcalf@ezchip.com>
Acked-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Dave Airlie <airlied@redhat.com>
Acked-by: David Herrmann <dh.herrmann@gmail.com>
Acked-by: Fabio Estevam <festevam@gmail.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Grant Likely <grant.likely@linaro.org>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Acked-by: Hannes Reinecke <hare@suse.de>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Hugh Dickins <hughd@google.com>
Acked-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Jaegeuk Kim <jaegeuk@kernel.org>
Acked-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Acked-by: Jens Axboe <axboe@kernel.dk>
Acked-by: Jes Sorensen <Jes.Sorensen@gmail.com>
Acked-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Johan Hovold <johan@kernel.org>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Acked-by: John W. Linville <linville@tuxdriver.com>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Acked-by: Josh Triplett <josh@joshtriplett.org>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Acked-by: Kees Cook <keescook@chromium.org>
Acked-by: Kevin Hilman <khilman@linaro.org>
Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Acked-by: Kristen Carlson Accardi <kristen@linux.intel.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Acked-by: Magnus Damm <damm@opensource.se>
Acked-by: Mark Brown <broonie@kernel.org>
Acked-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
Acked-by: NeilBrown <neilb@suse.de>
Acked-by: Olof Johansson <olof@lixom.net>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Acked-by: Rafael J. Wysocki <rafael@kernel.org>
Acked-by: Rik van Riel <riel@redhat.com>
Acked-by: Sachin Prabhu <sprabhu@redhat.com>
Acked-by: Shuah Khan <shuahkh@osg.samsung.com>
Acked-by: Simon Horman <horms@verge.net.au>
Acked-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Acked-by: Takashi Iwai <tiwai@suse.de>
Acked-by: Tejun Heo <tj@kernel.org>
Acked-by: Theodore Ts'o <tytso@mit.edu>
Acked-by: Tony Luck <tony.luck@intel.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Acked-by: Willy Tarreau <w@1wt.eu>
Acked-by: Zefan Li <lizefan@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c fixes from Wolfram Sang:
"A set of updates and bugfixes for the new designware-baytrail driver.
And a documentation bugfix"
* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: imx: add required clocks property to binding
i2c: designware-baytrail: baytrail_i2c_acquire() might sleep
i2c: designware-baytrail: cross-check lock functions
i2c: designware-baytrail: fix sparse warnings
i2c: designware-baytrail: fix typo in error path
i2c: designware-baytrail: describe magic numbers
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