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 <sergei.shtylyov@cogentembedded.com>
Cc: stable@vger.kernel.org
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/i2c/busses/i2c-rcar.c b/drivers/i2c/busses/i2c-rcar.c
index 1cc146cfc1f3..e506fcd3ca04 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)