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authorSebastian Andrzej Siewior <bigeasy@linutronix.de>2011-02-23 12:38:19 +0100
committerBen Dooks <ben-linux@fluff.org>2011-03-21 10:23:55 +0100
commit93c92cfdec8c3f8764894b37606c174f68fd9338 (patch)
tree131888459d95f1139685e8c5b3f8ac30c7215d47 /drivers/i2c/busses/i2c-pxa.c
parenti2c-pxa2xx: add support for shared IRQ handler (diff)
downloadlinux-93c92cfdec8c3f8764894b37606c174f68fd9338.tar.xz
linux-93c92cfdec8c3f8764894b37606c174f68fd9338.zip
i2c-pxa2xx: check timeout correctly
timeout here maybe 0 if the event occured and a task with a higher priority stole the cpu and we were sleeping longer than the timeout value we specified. In case of a real timeout I changed the error code to I2C_RETRY so we retry the transfer. Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Dirk Brandewie <dirk.brandewie@gmail.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Diffstat (limited to 'drivers/i2c/busses/i2c-pxa.c')
-rw-r--r--drivers/i2c/busses/i2c-pxa.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/i2c/busses/i2c-pxa.c b/drivers/i2c/busses/i2c-pxa.c
index fa8dd2c634d9..86128363a57f 100644
--- a/drivers/i2c/busses/i2c-pxa.c
+++ b/drivers/i2c/busses/i2c-pxa.c
@@ -770,8 +770,10 @@ static int i2c_pxa_do_xfer(struct pxa_i2c *i2c, struct i2c_msg *msg, int num)
*/
ret = i2c->msg_idx;
- if (timeout == 0)
+ if (!timeout && i2c->msg_num) {
i2c_pxa_scream_blue_murder(i2c, "timeout");
+ ret = I2C_RETRY;
+ }
out:
return ret;