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dmaengine: idxd: remove trailing white space on input str for wq name

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Add string processing with strim() in order to remove trailing white spaces
that may be input by user for the wq->name.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/164789525123.2799661.13795829125221129132.stgit@djiang5-desk3.ch.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Dave Jiang
2022-03-21 13:40:51 -07:00
committed by Vinod Koul
parent 1f854536a8
commit 81f5eb2b11
1 changed files with 8 additions and 2 deletions
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10
drivers/dma/idxd/sysfs.c
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@@ -832,6 +832,7 @@ static ssize_t wq_name_store(struct device *dev,
size_t count)
{
struct idxd_wq *wq = confdev_to_wq(dev);
char *input, *pos;
if (wq->state != IDXD_WQ_DISABLED)
return -EPERM;
@@ -846,9 +847,14 @@ static ssize_t wq_name_store(struct device *dev,
if (wq->type == IDXD_WQT_KERNEL && device_pasid_enabled(wq->idxd))
return -EOPNOTSUPP;
input = kstrndup(buf, count, GFP_KERNEL);
if (!input)
return -ENOMEM;
pos = strim(input);
memset(wq->name, 0, WQ_NAME_SIZE + 1);
strncpy(wq->name, buf, WQ_NAME_SIZE);
strreplace(wq->name, '\n', '\0');
sprintf(wq->name, "%s", pos);
kfree(input);
return count;
}