diff options
| author | Jerry Snitselaar <jsnitsel@redhat.com> | 2024-04-05 14:39:41 -0700 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2024-04-07 13:05:47 +0530 |
| commit | c863062cf8250d8330859fc1d730b2aed3313bcd (patch) | |
| tree | 63427312bbb2bcefce9a718ac71ad578064910f4 /drivers/dma | |
| parent | 8b7149803af174f3184d97c779faa1c7608da5af (diff) | |
dmaengine: idxd: Check for driver name match before sva user feature
Currently if the user driver is probed on a workqueue configured for
another driver with SVA not enabled on the system, it will print
out a number of probe failing messages like the following:
[ 264.831140] user: probe of wq13.0 failed with error -95
On some systems, such as GNR, the number of messages can
reach over 100.
Move the SVA feature check to be after the driver name match
check.
Cc: Vinod Koul <vkoul@kernel.org>
Cc: dmaengine@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Reviewed-by: Fenghua Yu <fenghua.yu@intel.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Jerry Snitselaar <jsnitsel@redhat.com>
Link: https://lore.kernel.org/r/20240405213941.3629709-1-jsnitsel@redhat.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma')
| -rw-r--r-- | drivers/dma/idxd/cdev.c | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/drivers/dma/idxd/cdev.c b/drivers/dma/idxd/cdev.c index 8078ab9acfbc..a4b771781afc 100644 --- a/drivers/dma/idxd/cdev.c +++ b/drivers/dma/idxd/cdev.c @@ -517,6 +517,14 @@ static int idxd_user_drv_probe(struct idxd_dev *idxd_dev) if (idxd->state != IDXD_DEV_ENABLED) return -ENXIO; + mutex_lock(&wq->wq_lock); + + if (!idxd_wq_driver_name_match(wq, dev)) { + idxd->cmd_status = IDXD_SCMD_WQ_NO_DRV_NAME; + rc = -ENODEV; + goto wq_err; + } + /* * User type WQ is enabled only when SVA is enabled for two reasons: * - If no IOMMU or IOMMU Passthrough without SVA, userspace @@ -532,14 +540,7 @@ static int idxd_user_drv_probe(struct idxd_dev *idxd_dev) dev_dbg(&idxd->pdev->dev, "User type WQ cannot be enabled without SVA.\n"); - return -EOPNOTSUPP; - } - - mutex_lock(&wq->wq_lock); - - if (!idxd_wq_driver_name_match(wq, dev)) { - idxd->cmd_status = IDXD_SCMD_WQ_NO_DRV_NAME; - rc = -ENODEV; + rc = -EOPNOTSUPP; goto wq_err; } |