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| author | Paolo Bonzini <pbonzini@redhat.com> | 2016-01-26 18:28:36 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2016-01-26 18:28:36 +0300 |
| commit | b8bc3bde9c8c90500c648627d53f846642ff8639 (patch) | |
| tree | 0c3ed82848a25948206556bc699a10d30bd18d07 /drivers/i2c/busses/i2c-bcm2835.c | |
| parent | 171b5682aa8597174e80ec4128c87538103f2213 (diff) | |
| parent | 9abc2a08a7d665b02bdde974fd6c44aae86e923e (diff) | |
| download | linux-b8bc3bde9c8c90500c648627d53f846642ff8639.tar.xz | |
Merge tag 'kvm-s390-master-4.5-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into HEAD
KVM: s390: Fixes for kvm/master (targeting 4.5)
1. Fallout of some bigger floating point/vector rework in s390
- memory leak -> stable 4.3+
- memory overwrite -> stable 4.4+
2. enable KVM-VFIO for s390
Diffstat (limited to 'drivers/i2c/busses/i2c-bcm2835.c')
| -rw-r--r-- | drivers/i2c/busses/i2c-bcm2835.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/i2c/busses/i2c-bcm2835.c b/drivers/i2c/busses/i2c-bcm2835.c index 3032b89ac60b..818b051d25e6 100644 --- a/drivers/i2c/busses/i2c-bcm2835.c +++ b/drivers/i2c/busses/i2c-bcm2835.c @@ -222,6 +222,15 @@ static const struct i2c_algorithm bcm2835_i2c_algo = { .functionality = bcm2835_i2c_func, }; +/* + * This HW was reported to have problems with clock stretching: + * http://www.advamation.com/knowhow/raspberrypi/rpi-i2c-bug.html + * https://www.raspberrypi.org/forums/viewtopic.php?p=146272 + */ +static const struct i2c_adapter_quirks bcm2835_i2c_quirks = { + .flags = I2C_AQ_NO_CLK_STRETCH, +}; + static int bcm2835_i2c_probe(struct platform_device *pdev) { struct bcm2835_i2c_dev *i2c_dev; @@ -293,6 +302,7 @@ static int bcm2835_i2c_probe(struct platform_device *pdev) adap->algo = &bcm2835_i2c_algo; adap->dev.parent = &pdev->dev; adap->dev.of_node = pdev->dev.of_node; + adap->quirks = &bcm2835_i2c_quirks; bcm2835_i2c_writel(i2c_dev, BCM2835_I2C_C, 0); |