From: Dave Jiang <dave.jiang@xxxxxxxxx>
[ Upstream commit 1cd8e751d96c43ece3f6842ac2244a37d9332c3a ]
If the device shows up as read-only configuration, skip the clearing of the
state as the context must be preserved for device re-enable after being
disabled.
Fixes: 0dcfe41e9a4c ("dmanegine: idxd: cleanup all device related bits after disabling device")
Reported-by: Tony Zhu <tony.zhu@xxxxxxxxx>
Tested-by: Tony Zhu <tony.zhu@xxxxxxxxx>
Signed-off-by: Dave Jiang <dave.jiang@xxxxxxxxx>
Link: https://lore.kernel.org/r/164971479479.2200566.13980022473526292759.stgit@xxxxxxxxxxxxxxxxxxxxxxxxxx
Signed-off-by: Vinod Koul <vkoul@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/dma/idxd/device.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/dma/idxd/device.c b/drivers/dma/idxd/device.c
index 5a0535a0f850..f652da6ab47d 100644
--- a/drivers/dma/idxd/device.c
+++ b/drivers/dma/idxd/device.c
@@ -708,6 +708,9 @@ static void idxd_device_wqs_clear_state(struct idxd_device *idxd)
void idxd_device_clear_state(struct idxd_device *idxd)
{
+ if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags))
+ return;
+
idxd_groups_clear_state(idxd);
idxd_engines_clear_state(idxd);
idxd_device_wqs_clear_state(idxd);
--
2.35.1
