From 78c43af2c1d79653e2e6fb9a05c8f3def7c87940 Mon Sep 17 00:00:00 2001 From: Oliver Neukum Date: Mon, 20 Mar 2017 14:37:30 +0100 Subject: [PATCH] i2c-designware: increase timeout of semaphore transfer 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 accommodate the worst cases. V2: Rebased on https://cgit.freedesktop.org/drm-intel/commit/?h=topic/designware-baytrail Signed-off-by: Oliver Neukum Reviewed-by: Hans de Goede Acked-by: Jarkko Nikula Signed-off-by: Wolfram Sang --- 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 1749a0f5a9fa..c0e7c8806342 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) -- 2.11.0