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dmaengine: idxd: fix wq size store permission state 

WQ size can only be changed when the device is disabled. Current code
allows change when device is enabled but wq is disabled. Change the check
to detect device state.

Fixes: c52ca47823 ("dmaengine: idxd: add configuration component of driver")
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/161782558755.107710.18138252584838406025.stgit@djiang5-desk3.ch.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Dave Jiang 2021-04-07 12:59:47 -07:00 committed by Vinod Koul
parent ea6a5735d2
commit 0fff71c5a3
1 changed files with 1 additions and 1 deletions
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2
drivers/dma/idxd/sysfs.c
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@ -989,7 +989,7 @@ static ssize_t wq_size_store(struct device *dev,
if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags))
return -EPERM;
if (wq->state != IDXD_WQ_DISABLED)
if (idxd->state == IDXD_DEV_ENABLED)
return -EPERM;
if (size + total_claimed_wq_size(idxd) - wq->size > idxd->max_wq_size)