diff options
| author | Fenghua Yu <fenghua.yu@intel.com> | 2023-07-12 20:44:36 +0300 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2023-08-01 21:04:43 +0300 |
| commit | 62b41b656666d2d35890124df5ef0881fe6d6769 (patch) | |
| tree | 42aa5e2f2b346064982be5c47b58e6d9842e3b95 /drivers/dma/idxd/sysfs.c | |
| parent | 97b1185fe54c8ce94104e3c7fa4ee0bbedd85920 (diff) | |
| download | linux-62b41b656666d2d35890124df5ef0881fe6d6769.tar.xz | |
dmaengine: idxd: Expose ATS disable knob only when WQ ATS is supported
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>
Diffstat (limited to 'drivers/dma/idxd/sysfs.c')
| -rw-r--r-- | drivers/dma/idxd/sysfs.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/drivers/dma/idxd/sysfs.c b/drivers/dma/idxd/sysfs.c index 36a30957ac9a..d16c16445c4f 100644 --- a/drivers/dma/idxd/sysfs.c +++ b/drivers/dma/idxd/sysfs.c @@ -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; } |