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dmaengine: idxd: Expose ATS disable knob only when WQ ATS is supported

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WQ Advanced Translation Service (ATS) can be controlled only when
WQ ATS is supported. The sysfs ATS disable knob should be visible only
when the features is supported.

Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/20230712174436.3435088-2-fenghua.yu@intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Fenghua Yu 2023-07-12 10:44:36 -07:00 committed by Vinod Koul
parent 97b1185fe5
commit 62b41b6566
1 changed files with 3 additions and 4 deletions
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7
drivers/dma/idxd/sysfs.c
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@ -1088,16 +1088,12 @@ static ssize_t wq_ats_disable_store(struct device *dev, struct device_attribute
const char *buf, size_t count)
{
struct idxd_wq *wq = confdev_to_wq(dev);
struct idxd_device *idxd = wq->idxd;
bool ats_dis;
int rc;
if (wq->state != IDXD_WQ_DISABLED)
return -EPERM;
if (!idxd->hw.wq_cap.wq_ats_support)
return -EOPNOTSUPP;
rc = kstrtobool(buf, &ats_dis);
if (rc < 0)
return rc;
@ -1316,6 +1312,9 @@ static umode_t idxd_wq_attr_visible(struct kobject *kobj,
if (idxd_wq_attr_invisible(prs_disable, wq_prs_support, attr, idxd))
return 0;
if (idxd_wq_attr_invisible(ats_disable, wq_ats_support, attr, idxd))
return 0;
return attr->mode;
}