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drm/xe/configfs: Fix engine class parsing

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If mask is NULL, only the engine class should be accepted, so the
pattern string should be completely parsed. This should fix passing e.g.
rcs0 to ctx_restore_post_bb when it's only expecting the engine class.

Reported-by: Jonathan Cavitt <jonathan.cavitt@intel.com>
Closes: https://lore.kernel.org/r/20250922155544.67712-1-jonathan.cavitt@intel.com
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Closes: https://lore.kernel.org/r/aNJKnrCQmL9xS9Gv@stanley.mountain
Fixes: e2a9854d80 ("drm/xe/configfs: Allow to select by class only")
Reviewed-by: Jonathan Cavitt <jonathan.cavitt@intel.com>
Reviewed-by: Raag Jadav <raag.jadav@intel.com>
Link: https://lore.kernel.org/r/20250924152709.659483-3-lucas.demarchi@intel.com
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
This commit is contained in:
Lucas De Marchi
2025-09-24 08:27:10 -07:00
parent 4d0b035fd6
commit dd79796716
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/xe/xe_configfs.c
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@@ -324,8 +324,8 @@ static const struct engine_info *lookup_engine_info(const char *pattern, u64 *ma
continue;
pattern += strlen(engine_info[i].cls);
if (!mask && !*pattern)
return &engine_info[i];
if (!mask)
return *pattern ? NULL : &engine_info[i];
if (!strcmp(pattern, "*")) {
*mask = engine_info[i].mask;