summaryrefslogtreecommitdiff
path: root/drivers/i2c
diff options
context:
space:
mode:
authorSergei Shtylyov <sergei.shtylyov@cogentembedded.com>2014-09-06 03:34:32 +0400
committerWolfram Sang <wsa@the-dreams.de>2014-09-20 13:56:20 +0400
commit938916fbb8e8cb67eacb784f4eda17e2950c16c5 (patch)
tree28ab131f0585989aa17bb7390f279c7239404fca /drivers/i2c
parentc9a9ef4170b3db3044504cd5512d0bb19c6f23c7 (diff)
downloadlinux-938916fbb8e8cb67eacb784f4eda17e2950c16c5.tar.xz
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>
Diffstat (limited to 'drivers/i2c')
-rw-r--r--drivers/i2c/busses/i2c-rcar.c4
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)