linux/drivers/i2c
Michail Georgios Etairidis 1042c14734 i2c: imx: Use correct function to write to register
commit 6c782a5ea5 upstream.

The i2c-imx driver incorrectly uses readb()/writeb() to read and
write to the appropriate registers when performing a repeated start.
The appropriate imx_i2c_read_reg()/imx_i2c_write_reg() functions
should be used instead. Performing a repeated start results in
a kernel panic. The platform is imx.

Signed-off-by: Michail G Etairidis <m.etairidis@beck-ipc.com>
Fixes: ce1a78840f ("i2c: imx: add DMA support for freescale i2c driver")
Fixes: 054b62d9f2 ("i2c: imx: fix the i2c bus hang issue when do repeat restart")
Acked-by: Fugang Duan <fugang.duan@nxp.com>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
[bwh: Backported to 3.16: drop changes in i2c_imx_dma_read()]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
History 2017-09-15 18:30:14 +01:00
..
algos Merge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2014-01-29 19:56:20 -08:00
busses i2c: imx: Use correct function to write to register 2017-09-15 18:30:14 +01:00
muxes i2c: mux: pca954x: fix i2c mux selection caching 2017-03-16 02:26:38 +00:00
i2c-boardinfo.c i2c: Update the FSF address 2012-03-26 21:47:19 +02:00
i2c-core.c i2c: core: fix NULL pointer dereference under race condition 2017-02-23 03:54:29 +00:00
i2c-core.h i2c: Update the FSF address 2012-03-26 21:47:19 +02:00
i2c-dev.c i2c: fix kernel memory disclosure in dev interface 2017-03-16 02:26:58 +00:00
i2c-mux.c i2c: mux: Inherit retry count and timeout from parent for muxed bus 2013-12-12 22:39:28 +01:00
i2c-smbus.c Update Jean Delvare's e-mail address 2014-01-29 20:40:08 +01:00
i2c-stub.c Update Jean Delvare's e-mail address 2014-01-29 20:40:08 +01:00
Kconfig Remove GENERIC_HARDIRQ config option 2013-09-13 15:09:52 +02:00
Makefile i2c-stub: Move to drivers/i2c 2012-10-28 21:37:00 +01:00