X-Git-Url: http://git.monstr.eu/?a=blobdiff_plain;f=drivers%2Fdma%2Fidxd%2Fsysfs.c;fp=drivers%2Fdma%2Fidxd%2Fsysfs.c;h=66c89b07b3f7ba2d13489fe63f83bc9675eac599;hb=0056a7f07b0a63e6cee815a789eabba6f3a710f0;hp=d16c16445c4f9b7ce47eda76be819b4f3e031b6e;hpb=84b798fedf3fa8f0ab0c096593ba817abc454fe5;p=linux-2.6-microblaze.git

diff --git a/drivers/dma/idxd/sysfs.c b/drivers/dma/idxd/sysfs.c
index d16c16445c4f..66c89b07b3f7 100644
--- a/drivers/dma/idxd/sysfs.c
+++ b/drivers/dma/idxd/sysfs.c
@@ -1088,12 +1088,16 @@ static ssize_t wq_ats_disable_store(struct device *dev, struct device_attribute
 				    const char *buf, size_t count)
 {
 	struct idxd_wq *wq = confdev_to_wq(dev);
+	struct idxd_device *idxd = wq->idxd;
 	bool ats_dis;
 	int rc;
 
 	if (wq->state != IDXD_WQ_DISABLED)
 		return -EPERM;
 
+	if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags))
+		return -EPERM;
+
 	rc = kstrtobool(buf, &ats_dis);
 	if (rc < 0)
 		return rc;