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i2c: ensure SDA is released in recovery if SDA is controllable

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If we have a function to control SDA, we should ensure that SDA is not
held down by us. So, release the GPIO in this case.

Tested-by: Phil Reid <preid@electromag.com.au>
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
This commit is contained in:
Wolfram Sang 2018-01-09 14:58:57 +01:00 committed by Wolfram Sang
parent 8092178ffe
commit 72b08fcc15
1 changed files with 2 additions and 0 deletions
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2
drivers/i2c/i2c-core-base.c
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@ -169,6 +169,8 @@ int i2c_generic_scl_recovery(struct i2c_adapter *adap)
bri->prepare_recovery(adap);
bri->set_scl(adap, val);
if (bri->set_sda)
bri->set_sda(adap, 1);
ndelay(RECOVERY_NDELAY);
/*