diff options
| author | Giovanni Cabiddu <giovanni.cabiddu@intel.com> | 2023-09-14 12:55:47 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-11-20 13:52:04 +0300 |
| commit | e3294cccd818af41519adca60e62fa9bd6ae0be1 (patch) | |
| tree | 0499b5c18a62de1c94c0cac4e99f8fa59c579f83 /drivers/crypto | |
| parent | bb55130d024a8fa6d1b0e0a4264d51cc222ab09f (diff) | |
| download | linux-e3294cccd818af41519adca60e62fa9bd6ae0be1.tar.xz | |
crypto: qat - ignore subsequent state up commands
[ Upstream commit 9c20cb8b1847dedddec3d5163079290542bf00bf ]
If the device is already in the up state, a subsequent write of `up` to
the sysfs attribute /sys/bus/pci/devices/<BDF>/qat/state brings the
device down.
Fix this behaviour by ignoring subsequent `up` commands if the device is
already in the up state.
Fixes: 1bdc85550a2b ("crypto: qat - fix concurrency issue when device state changes")
Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Reviewed-by: Adam Guerin <adam.guerin@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/crypto')
| -rw-r--r-- | drivers/crypto/qat/qat_common/adf_sysfs.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/crypto/qat/qat_common/adf_sysfs.c b/drivers/crypto/qat/qat_common/adf_sysfs.c index 3eb6611ab1b1..81b2ecfcc806 100644 --- a/drivers/crypto/qat/qat_common/adf_sysfs.c +++ b/drivers/crypto/qat/qat_common/adf_sysfs.c @@ -61,7 +61,9 @@ static ssize_t state_store(struct device *dev, struct device_attribute *attr, dev_info(dev, "Starting device qat_dev%d\n", accel_id); ret = adf_dev_up(accel_dev, true); - if (ret < 0) { + if (ret == -EALREADY) { + break; + } else if (ret) { dev_err(dev, "Failed to start device qat_dev%d\n", accel_id); adf_dev_down(accel_dev, true); |