Our testing shows the semaphore failing to be transferred on CherryTrail in about 0.5% of all cases. The existing timeout needs to be lengthened to accomodate the worst cases. V2: Rebased on https://cgit.freedesktop.org/drm-intel/commit/?h=topic/designware-baytrail Signed-off-by: Oliver Neukum <oneukum@xxxxxxxx> --- drivers/i2c/busses/i2c-designware-baytrail.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/i2c/busses/i2c-designware-baytrail.c b/drivers/i2c/busses/i2c-designware-baytrail.c index 1749a0f..c0e7c88 100644 --- a/drivers/i2c/busses/i2c-designware-baytrail.c +++ b/drivers/i2c/busses/i2c-designware-baytrail.c @@ -22,7 +22,7 @@ #include "i2c-designware-core.h" -#define SEMAPHORE_TIMEOUT 100 +#define SEMAPHORE_TIMEOUT 500 #define PUNIT_SEMAPHORE 0x7 #define PUNIT_SEMAPHORE_CHT 0x10e #define PUNIT_SEMAPHORE_BIT BIT(0) -- 2.10.2 -- To unsubscribe from this list: send the line "unsubscribe linux-i2c" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
