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authorMathias Nyman <mathias.nyman@nokia.com>2010-08-26 09:36:44 +0200
committerBen Dooks <ben-linux@fluff.org>2010-09-22 02:06:58 +0200
commit5c64eb26ed5c5550fbabd345e573af3fc6a7f775 (patch)
tree9a78f9e7c55865e8ece8c577afeacc789cce2098 /drivers/i2c/busses/i2c-omap.c
parentMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mat... (diff)
downloadlinux-5c64eb26ed5c5550fbabd345e573af3fc6a7f775.tar.xz
linux-5c64eb26ed5c5550fbabd345e573af3fc6a7f775.zip
i2c-omap: Make sure i2c bus is free before setting it to idle
If the i2c bus receives an interrupt with both BB (bus busy) and ARDY (register access ready) statuses set during the tranfer of the last message the bus was put to idle while still busy. This caused bus to timeout. Signed-off-by: Mathias Nyman <mathias.nyman@nokia.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Diffstat (limited to '')
-rw-r--r--drivers/i2c/busses/i2c-omap.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/i2c/busses/i2c-omap.c b/drivers/i2c/busses/i2c-omap.c
index 7674efb55378..b33c78586bfc 100644
--- a/drivers/i2c/busses/i2c-omap.c
+++ b/drivers/i2c/busses/i2c-omap.c
@@ -680,6 +680,8 @@ omap_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msgs[], int num)
if (r == 0)
r = num;
+
+ omap_i2c_wait_for_bb(dev);
out:
omap_i2c_idle(dev);
return r;