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| author | Herbert Xu <herbert@gondor.apana.org.au> | 2018-08-03 12:55:12 +0300 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2018-08-03 12:55:12 +0300 |
| commit | c5f5aeef9b55b362ad5a0e04e4b41cd63b208842 (patch) | |
| tree | 0ee2bb561e879db0a990d998359f6516dff3393b /drivers/i2c/i2c-core-base.c | |
| parent | a4789089937941959be6c18fa53e1fc0189257fd (diff) | |
| parent | c7513c2a2714204d3588ecaa170ae628fd0d217e (diff) | |
| download | linux-c5f5aeef9b55b362ad5a0e04e4b41cd63b208842.tar.xz | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux
Merge mainline to pick up c7513c2a2714 ("crypto/arm64: aes-ce-gcm -
add missing kernel_neon_begin/end pair").
Diffstat (limited to 'drivers/i2c/i2c-core-base.c')
| -rw-r--r-- | drivers/i2c/i2c-core-base.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/i2c/i2c-core-base.c b/drivers/i2c/i2c-core-base.c index 31d16ada6e7d..301285c54603 100644 --- a/drivers/i2c/i2c-core-base.c +++ b/drivers/i2c/i2c-core-base.c @@ -198,7 +198,16 @@ int i2c_generic_scl_recovery(struct i2c_adapter *adap) val = !val; bri->set_scl(adap, val); - ndelay(RECOVERY_NDELAY); + + /* + * If we can set SDA, we will always create STOP here to ensure + * the additional pulses will do no harm. This is achieved by + * letting SDA follow SCL half a cycle later. + */ + ndelay(RECOVERY_NDELAY / 2); + if (bri->set_sda) + bri->set_sda(adap, val); + ndelay(RECOVERY_NDELAY / 2); } /* check if recovery actually succeeded */ |