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| author | Dave Airlie <airlied@redhat.com> | 2020-07-24 08:28:09 +1000 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2020-07-24 08:48:05 +1000 |
| commit | 41206a073ceebc517245677a19f52ba6379b33a9 (patch) | |
| tree | 2fc35aac6abe32b99058ad55b0fc6e4d449d1056 /drivers/dma/idxd/cdev.c | |
| parent | 206739119508d5ab4b42ab480ff61a7e6cd72d7c (diff) | |
| parent | ba47d845d715a010f7b51f6f89bae32845e6acb7 (diff) | |
| download | linux-41206a073ceebc517245677a19f52ba6379b33a9.tar.gz linux-41206a073ceebc517245677a19f52ba6379b33a9.tar.bz2 linux-41206a073ceebc517245677a19f52ba6379b33a9.zip | |
Merge v5.8-rc6 into drm-next
I've got a silent conflict + two trees based on fixes to merge.
Fixes a silent merge with amdgpu
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/dma/idxd/cdev.c')
| -rw-r--r-- | drivers/dma/idxd/cdev.c | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/drivers/dma/idxd/cdev.c b/drivers/dma/idxd/cdev.c index ff49847e37a8..cb376cf6a2d2 100644 --- a/drivers/dma/idxd/cdev.c +++ b/drivers/dma/idxd/cdev.c @@ -74,6 +74,7 @@ static int idxd_cdev_open(struct inode *inode, struct file *filp) struct idxd_device *idxd; struct idxd_wq *wq; struct device *dev; + int rc = 0; wq = inode_wq(inode); idxd = wq->idxd; @@ -81,17 +82,27 @@ static int idxd_cdev_open(struct inode *inode, struct file *filp) dev_dbg(dev, "%s called: %d\n", __func__, idxd_wq_refcount(wq)); - if (idxd_wq_refcount(wq) > 0 && wq_dedicated(wq)) - return -EBUSY; - ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); if (!ctx) return -ENOMEM; + mutex_lock(&wq->wq_lock); + + if (idxd_wq_refcount(wq) > 0 && wq_dedicated(wq)) { + rc = -EBUSY; + goto failed; + } + ctx->wq = wq; filp->private_data = ctx; idxd_wq_get(wq); + mutex_unlock(&wq->wq_lock); return 0; + + failed: + mutex_unlock(&wq->wq_lock); + kfree(ctx); + return rc; } static int idxd_cdev_release(struct inode *node, struct file *filep) @@ -105,7 +116,9 @@ static int idxd_cdev_release(struct inode *node, struct file *filep) filep->private_data = NULL; kfree(ctx); + mutex_lock(&wq->wq_lock); idxd_wq_put(wq); + mutex_unlock(&wq->wq_lock); return 0; } |