lwn.git/drivers, branch v4.1.31

USB: OHCI: Don't mark EDs as ED_OPER if scheduling fails

2016-08-20T03:08:45+00:00

[ Upstream commit c66f59ee5050447b3da92d36f5385a847990a894 ] Since ed_schedule begins with marking the ED as "operational", the ED may be left in such state even if scheduling actually fails. This allows future submission attempts to smuggle this ED to the hardware behind the scheduler's back and without linking it to the ohci->eds_in_use list. The former causes bandwidth saturation and data loss on isoc endpoints, the latter crashes the kernel when attempt is made to unlink such ED from this list. Fix ed_schedule to update ED state only on successful return. Signed-off-by: Michal Pecio Acked-by: Alan Stern Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin

iio:ad7266: Fix probe deferral for vref

2016-08-20T03:08:44+00:00

[ Upstream commit 68b356eb3d9f5e38910fb62e22a78e2a18d544ae ] Currently the ad7266 driver treats any failure to get vref as though the regulator were not present but this means that if probe deferral is triggered the driver will act as though the regulator were not present. Instead only use the internal reference if we explicitly got -ENODEV which is what is returned for absent regulators. Signed-off-by: Mark Brown Cc: Signed-off-by: Jonathan Cameron Signed-off-by: Sasha Levin

iio:ad7266: Fix support for optional regulators

2016-08-20T03:08:44+00:00

[ Upstream commit e5511c816e5ac4909bdd38e85ac344e2b9b8e984 ] The ad7266 driver attempts to support deciding between the use of internal and external power supplies by checking to see if an error is returned when requesting the regulator. This doesn't work with the current code since the driver uses a normal regulator_get() which is for non-optional supplies and so assumes that if a regulator is not provided by the platform then this is a bug in the platform integration and so substitutes a dummy regulator. Use regulator_get_optional() instead which indicates to the framework that the regulator may be absent and provides a dummy regulator instead. Signed-off-by: Mark Brown Cc: Signed-off-by: Jonathan Cameron Signed-off-by: Sasha Levin

iio:ad7266: Fix broken regulator error handling

2016-08-20T03:08:44+00:00

[ Upstream commit 6b7f4e25f3309f106a5c7ff42c8231494cf285d3 ] All regulator_get() variants return either a pointer to a regulator or an ERR_PTR() so testing for NULL makes no sense and may lead to bugs if we use NULL as a valid regulator. Fix this by using IS_ERR() as expected. Signed-off-by: Mark Brown Cc: Signed-off-by: Jonathan Cameron Signed-off-by: Sasha Levin

iio: accel: kxsd9: fix the usage of spi_w8r8()

2016-08-20T03:08:43+00:00

[ Upstream commit 0c1f91b98552da49d9d8eed32b3132a58d2f4598 ] These two spi_w8r8() calls return a value with is used by the code following the error check. The dubious use was caused by a cleanup patch. Fixes: d34dbee8ac8e ("staging:iio:accel:kxsd9 cleanup and conversion to iio_chan_spec.") Signed-off-by: Linus Walleij Cc: Signed-off-by: Jonathan Cameron Signed-off-by: Sasha Levin

staging: iio: accel: fix error check

2016-08-20T03:08:43+00:00

[ Upstream commit ef3149eb3ddb7f9125e11c90f8330e371b55cffd ] sca3000_read_ctrl_reg() returns a negative number on failure, check for this instead of zero. Signed-off-by: Luis de Bethencourt Cc: Signed-off-by: Jonathan Cameron Signed-off-by: Sasha Levin

iio: proximity: as3935: fix buffer stack trashing

2016-08-20T03:08:42+00:00

[ Upstream commit 37b1ba2c68cfbe37f5f45bb91bcfaf2b016ae6a1 ] Buffer wasn't of a valid size to allow the timestamp, and correct padding. This patchset also moves the buffer off the stack, and onto the heap. Cc: george.mccollister@gmail.com Signed-off-by: Matt Ranostay Cc: Signed-off-by: Jonathan Cameron Signed-off-by: Sasha Levin

iio: proximity: as3935: remove triggered buffer processing

2016-08-20T03:08:42+00:00

[ Upstream commit 7d0643634ea567969bf3f3ed6193a9d6fc75653b ] Triggered buffers shouldn't return processed data, and the respective conversion was overflowing the defined .realbits for the channel. Cc: george.mccollister@gmail.com Signed-off-by: Matt Ranostay Cc: Signed-off-by: Jonathan Cameron Signed-off-by: Sasha Levin

iio: proximity: as3935: correct IIO_CHAN_INFO_RAW output

2016-08-20T03:08:41+00:00

[ Upstream commit 5138806f16c74c7cb8ac3e408a859c79eb7c9567 ] IIO_CHAN_INFO_RAW was returning processed data which was incorrect. This also adds the IIO_CHAN_INFO_SCALE value to convert to a processed value. Signed-off-by: Matt Ranostay Cc: Signed-off-by: Jonathan Cameron Signed-off-by: Sasha Levin

iio:st_pressure: fix sampling gains (bring inline with ABI)

2016-08-20T03:08:41+00:00

[ Upstream commit d43a41152f8e9e4c0d19850884d1fada076dee10 ] Temperature channels report scaled samples in Celsius although expected as milli degree Celsius in Documentation/ABI/testing/sysfs-bus-iio. Gains are not implemented at all for LPS001WP pressure and temperature channels. This patch ensures that proper offsets and scales are exposed to userpace for both pressure and temperature channels. Also fix a NULL pointer exception when userspace reads content of sysfs scale attribute when gains are not defined. Signed-off-by: Gregor Boirie Cc: Signed-off-by: Jonathan Cameron Signed-off-by: Sasha Levin