diff options
| author | Dave Jiang <dave.jiang@intel.com> | 2020-08-28 15:13:55 -0700 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2020-09-03 12:40:12 +0530 |
| commit | ff18de55a62f0e8f0dcf11bfa7f69b23e6e951b0 (patch) | |
| tree | 324074b701e98225cef6d749cb0f88cbd39e80bb /drivers/dma/idxd/sysfs.c | |
| parent | e7184b159dd37f4be8ff3d070c7c11f76b5bc3fe (diff) | |
| download | linux-ff18de55a62f0e8f0dcf11bfa7f69b23e6e951b0.tar.bz2 | |
dmaengine: idxd: add command status to idxd sysfs attribute
Export admin command status to sysfs attribute in order to allow user to
retrieve configuration error. Allows user tooling to retrieve the command
error and provide more user friendly error messages.
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/159865278770.29455.8026892329182750127.stgit@djiang5-desk3.ch.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma/idxd/sysfs.c')
| -rw-r--r-- | drivers/dma/idxd/sysfs.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/dma/idxd/sysfs.c b/drivers/dma/idxd/sysfs.c index e6284cb78a4c..07a5db06a29a 100644 --- a/drivers/dma/idxd/sysfs.c +++ b/drivers/dma/idxd/sysfs.c @@ -1402,6 +1402,15 @@ static ssize_t cdev_major_show(struct device *dev, } static DEVICE_ATTR_RO(cdev_major); +static ssize_t cmd_status_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct idxd_device *idxd = container_of(dev, struct idxd_device, conf_dev); + + return sprintf(buf, "%#x\n", idxd->cmd_status); +} +static DEVICE_ATTR_RO(cmd_status); + static struct attribute *idxd_device_attributes[] = { &dev_attr_version.attr, &dev_attr_max_groups.attr, @@ -1420,6 +1429,7 @@ static struct attribute *idxd_device_attributes[] = { &dev_attr_max_tokens.attr, &dev_attr_token_limit.attr, &dev_attr_cdev_major.attr, + &dev_attr_cmd_status.attr, NULL, }; |