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i2c-omap: Make sure i2c bus is free before setting it to idle

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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>
This commit is contained in:
Mathias Nyman 2010-08-26 07:36:44 +00:00 committed by Ben Dooks
parent 2422084a94
commit 5c64eb26ed
1 changed files with 2 additions and 0 deletions
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drivers/i2c/busses/i2c-omap.c
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@ -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;