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From: Dave Jiang <dave.jiang@intel.com>
To: vkoul@kernel.org
Cc: dmaengine@vger.kernel.org
Subject: [PATCH] dmaengine: idxd: fix wq size store permission state
Date: Wed, 07 Apr 2021 12:59:47 -0700	[thread overview]
Message-ID: <161782558755.107710.18138252584838406025.stgit@djiang5-desk3.ch.intel.com> (raw)

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: c52ca478233c ("dmaengine: idxd: add configuration component of driver")
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
---
 drivers/dma/idxd/sysfs.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/dma/idxd/sysfs.c b/drivers/dma/idxd/sysfs.c
index f08d45f4570e..581ce56ae4f5 100644
--- a/drivers/dma/idxd/sysfs.c
+++ b/drivers/dma/idxd/sysfs.c
@@ -889,7 +889,7 @@ 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)



             reply	other threads:[~2021-04-07 19:59 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-07 19:59 Dave Jiang [this message]
2021-04-12  9:16 ` [PATCH] dmaengine: idxd: fix wq size store permission state Vinod Koul

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