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drm/xe/mcr: Avoid clobbering DSS steering

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BugLink: https://bugs.launchpad.net/bugs/2077600

[ Upstream commit 1f006470284598060ca1307355352934400b37ca ]

A couple copy/paste mistakes in the code that selects steering targets
for OADDRM and INSTANCE0 unintentionally clobbered the steering target
for DSS ranges in some cases.

The OADDRM/INSTANCE0 values were also not assigned as intended, although
that mistake wound up being harmless since the desired values for those
specific ranges were '0' which the kzalloc of the GT structure should
have already taken care of implicitly.

Fixes: dd08ebf6c3 ("drm/xe: Introduce a new DRM driver for Intel GPUs")
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240626210536.1620176-2-matthew.d.roper@intel.com
(cherry picked from commit 4f82ac6102788112e599a6074d2c1f2afce923df)
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Portia Stephens <portia.stephens@canonical.com>
Signed-off-by: Roxana Nicolescu <roxana.nicolescu@canonical.com>
This commit is contained in:
Matt Roper
2024-06-26 14:05:37 -07:00
committed by Stefan Bader
parent f7814fa9a1
commit 828e64164c
1 changed files with 3 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/gpu/drm/xe/xe_gt_mcr.c
+3 -3
View File
@@ -312,7 +312,7 @@ static void init_steering_oaddrm(struct xe_gt *gt)
else
gt->steering[OADDRM].group_target = 1;
gt->steering[DSS].instance_target = 0; /* unused */
gt->steering[OADDRM].instance_target = 0; /* unused */
}
static void init_steering_sqidi_psmi(struct xe_gt *gt)
@@ -327,8 +327,8 @@ static void init_steering_sqidi_psmi(struct xe_gt *gt)
static void init_steering_inst0(struct xe_gt *gt)
{
gt->steering[DSS].group_target = 0; /* unused */
gt->steering[DSS].instance_target = 0; /* unused */
gt->steering[INSTANCE0].group_target = 0; /* unused */
gt->steering[INSTANCE0].instance_target = 0; /* unused */
}
static const struct {