linux/drivers/i2c
Dmitry Osipenko b3ec946975 i2c: tegra: Check DMA completion status in addition to left time
It is more robust to check completion status in addition to the left time
in a case of DMA transfer because transfer's completion happens in two
phases [one is ISR, other is tasklet] and thus it is possible that DMA is
completed while I2C completion awaiting times out because of the deferred
notification done by the DMA driver. The DMA completion status becomes
100% actual after DMA synchronization. This fixes spurious DMA timeouts
when system is under load.

Tested-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2020-01-15 18:32:37 +01:00
..
algos treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
busses i2c: tegra: Check DMA completion status in addition to left time 2020-01-15 18:32:37 +01:00
muxes i2c: Fix Kconfig indentation 2019-11-25 17:13:51 +01:00
i2c-boardinfo.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
i2c-core-acpi.c i2c: acpi: Force bus speed to 400KHz if a Silead touchscreen is present 2019-11-15 21:55:14 +01:00
i2c-core-base.c Merge branch 'i2c/for-current' into i2c/for-5.6 2020-01-15 18:31:37 +01:00
i2c-core-of.c Driver core patches for 5.5-rc1 2019-11-27 11:06:20 -08:00
i2c-core-slave.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
i2c-core-smbus.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
i2c-core.h Merge branch 'i2c/for-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2019-07-15 21:10:39 -07:00
i2c-dev.c Merge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2019-06-02 10:18:11 -07:00
i2c-mux.c i2c: mux: add sysfs header 2019-06-22 07:32:33 +02:00
i2c-slave-eeprom.c i2c: slave-eeprom: Add read only mode 2019-09-28 20:44:12 +02:00
i2c-smbus.c i2c: smbus: Don't filter out duplicate alerts 2019-11-25 17:13:34 +01:00
i2c-stub.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
Kconfig docs: i2c: convert to ReST and add to driver-api bookset 2019-07-31 13:25:27 -06:00
Makefile i2c: don't use any __deprecated handling anymore 2018-08-24 17:26:43 +02:00