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History

Ville Syrjala 8ee161ce5e i2c-algo-bit: Fix spurious SCL timeouts under heavy load

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>
Cc: stable@vger.kernel.org
Signed-off-by: Jean Delvare <khali@linux-fr.org>

2012-03-15 18:11:05 +01:00

i2c-algo-bit.c

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

2012-03-15 18:11:05 +01:00

i2c-algo-pca.c

i2c-algo-pca: Return standard fault codes

2011-10-30 13:47:25 +01:00

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

Linux-2.6.12-rc2