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dmaengine: idxd: Remove a useless mutex

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ida_alloc()/ida_free() don't need any mutex, so remove this one.

It was introduced by commit e6fd6d7e5f ("dmaengine: idxd: add a device to
represent the file opened").

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Fenghua Yu <fenghua.yu@intel.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/e08df764e7046178ada4ec066852c0ce65410373.1730547933.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Christophe JAILLET 2024-11-02 12:46:04 +01:00 committed by Vinod Koul
parent 8a20040f9d
commit 8d0191a602
1 changed files with 0 additions and 5 deletions
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5
drivers/dma/idxd/cdev.c
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@ -28,7 +28,6 @@ struct idxd_cdev_context {
* global to avoid conflict file names.
*/
static DEFINE_IDA(file_ida);
static DEFINE_MUTEX(ida_lock);
/*
* ictx is an array based off of accelerator types. enum idxd_type
@ -123,9 +122,7 @@ static void idxd_file_dev_release(struct device *dev)
struct idxd_device *idxd = wq->idxd;
int rc;
mutex_lock(&ida_lock);
ida_free(&file_ida, ctx->id);
mutex_unlock(&ida_lock);
/* Wait for in-flight operations to complete. */
if (wq_shared(wq)) {
@ -284,9 +281,7 @@ static int idxd_cdev_open(struct inode *inode, struct file *filp)
}
idxd_cdev = wq->idxd_cdev;
mutex_lock(&ida_lock);
ctx->id = ida_alloc(&file_ida, GFP_KERNEL);
mutex_unlock(&ida_lock);
if (ctx->id < 0) {
dev_warn(dev, "ida alloc failure\n");
goto failed_ida;