From 410054659c46e5263d2f4afec1cb6716a6a03d68 Mon Sep 17 00:00:00 2001 From: Sergei Shtylyov Date: Sat, 6 Sep 2014 03:34:32 +0400 Subject: [PATCH] i2c: rcar: fix RCAR_IRQ_ACK_{RECV|SEND} Bits 8-31 of all registers reflect the value of bits 0-7 on reads and should be 0 on writes, according to the manuals. RCAR_IRQ_ACK_{RECV|SEND} macros have all 1's in bits 8-31, thus going against the manuals, so fix them. Signed-off-by: Sergei Shtylyov Cc: stable@vger.kernel.org Signed-off-by: Wolfram Sang (cherry picked from commit 938916fbb8e8cb67eacb784f4eda17e2950c16c5) Signed-off-by: Simon Horman --- drivers/i2c/busses/i2c-rcar.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/i2c/busses/i2c-rcar.c b/drivers/i2c/busses/i2c-rcar.c index 1cc146c..e506fcd 100644 --- a/drivers/i2c/busses/i2c-rcar.c +++ b/drivers/i2c/busses/i2c-rcar.c @@ -76,8 +76,8 @@ #define RCAR_IRQ_RECV (MNR | MAL | MST | MAT | MDR) #define RCAR_IRQ_STOP (MST) -#define RCAR_IRQ_ACK_SEND (~(MAT | MDE)) -#define RCAR_IRQ_ACK_RECV (~(MAT | MDR)) +#define RCAR_IRQ_ACK_SEND (~(MAT | MDE) & 0xFF) +#define RCAR_IRQ_ACK_RECV (~(MAT | MDR) & 0xFF) #define ID_LAST_MSG (1 << 0) #define ID_IOERROR (1 << 1) -- 2.7.4