Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 5.16 0655/1017] dmaengine: idxd: restore traffic class defaults after wq reset | Date | Tue, 5 Apr 2022 09:26:08 +0200 |
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From: Dave Jiang <dave.jiang@intel.com>
[ Upstream commit ea7c8f598c323f6ebaf9ddae01fb2a981fe8c56a ]
When clearing the group configurations, the driver fails to restore the default setting for DSA 1.x based devices. Add defaults in idxd_groups_clear_state() for traffic class configuration.
Fixes: ade8a86b512c ("dmaengine: idxd: Set defaults for GRPCFG traffic class") Reported-by: Binuraj Ravindran <binuraj.ravindran@intel.com> Signed-off-by: Dave Jiang <dave.jiang@intel.com> Link: https://lore.kernel.org/r/164304123369.824298.6952463420266592087.stgit@djiang5-desk3.ch.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org> --- drivers/dma/idxd/device.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/drivers/dma/idxd/device.c b/drivers/dma/idxd/device.c index 83aa0c79f830..4bafc88f425f 100644 --- a/drivers/dma/idxd/device.c +++ b/drivers/dma/idxd/device.c @@ -691,8 +691,13 @@ static void idxd_groups_clear_state(struct idxd_device *idxd) group->use_rdbuf_limit = false; group->rdbufs_allowed = 0; group->rdbufs_reserved = 0; - group->tc_a = -1; - group->tc_b = -1; + if (idxd->hw.version < DEVICE_VERSION_2 && !tc_override) { + group->tc_a = 1; + group->tc_b = 1; + } else { + group->tc_a = -1; + group->tc_b = -1; + } } } -- 2.34.1
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