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| author | Paolo Bonzini <pbonzini@redhat.com> | 2018-08-06 17:31:36 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2018-08-06 17:31:36 +0200 |
| commit | d2ce98ca0a192e1bcb89068adfe6cb736f5e351c (patch) | |
| tree | 888ccaba7b3e09bf4b81324dff38a65f5667296c /drivers/i2c/i2c-core-base.c | |
| parent | 85eae57bbb0612387201635659be543aaac2109e (diff) | |
| parent | d72e90f33aa4709ebecc5005562f52335e106a60 (diff) | |
Merge tag 'v4.18-rc6' into HEAD
Pull bug fixes into the KVM development tree to avoid nasty conflicts.
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 */ |