Ville Syrjala 35f68010b4 i2c-algo-bit: Fix spurious SCL timeouts under heavy load ...

commit 8ee161ce5e upstream.

When the system is under heavy load, there can be a significant delay
between the getscl() and time_after() calls inside sclhi(). That delay
may cause the time_after() check to trigger after SCL has gone high,
causing sclhi() to return -ETIMEDOUT.

To fix the problem, double check that SCL is still low after the
timeout has been reached, before deciding to return -ETIMEDOUT.

Signed-off-by: Ville Syrjala <syrjala@sci.fi>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2012-03-19 08:57:59 -07:00

..

i2c-algo-bit.c

i2c-algo-bit: Fix spurious SCL timeouts under heavy load

2012-03-19 08:57:59 -07:00

i2c-algo-pca.c

Fix common misspellings

2011-03-31 11:26:23 -03:00

i2c-algo-pcf.c

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

2010-03-30 22:02:32 +09:00

i2c-algo-pcf.h

…

Kconfig

i2c/algos: convert Kconfig to use the menu's `visible' keyword

2010-11-22 11:27:35 -02:00

Makefile

i2c: Change to new flag variable

2010-10-24 18:16:58 +02:00