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author | Janusz Krzysztofik <janusz.krzysztofik@linux.intel.com> | 2022-11-21 15:56:55 +0100 |
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committer | Rodrigo Vivi <rodrigo.vivi@intel.com> | 2022-11-29 12:30:10 -0500 |
commit | 35aba5f51a39fb95351844ffb14ec02b8970e19f (patch) | |
tree | ee115c52181a9811f398774f9f4169335b1bc31d /drivers | |
parent | 6a5347293992e0412bc748dae11228a7081393fa (diff) | |
download | linux-35aba5f51a39fb95351844ffb14ec02b8970e19f.tar.gz |
drm/i915: Never return 0 if not all requests retired
Users of intel_gt_retire_requests_timeout() expect 0 return value on success. However, we have no protection from passing back 0 potentially returned by a call to dma_fence_wait_timeout() when it succedes right after its timeout has expired. Replace 0 with -ETIME before potentially using the timeout value as return code, so -ETIME is returned if there are still some requests not retired after timeout, 0 otherwise. v3: Use conditional expression, more compact but also better reflecting intention standing behind the change. v2: Move the added lines down so flush_submission() is not affected. Fixes: f33a8a51602c ("drm/i915: Merge wait_for_timelines with retire_request") Signed-off-by: Janusz Krzysztofik <janusz.krzysztofik@linux.intel.com> Reviewed-by: Andrzej Hajda <andrzej.hajda@intel.com> Cc: stable@vger.kernel.org # v5.5+ Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20221121145655.75141-3-janusz.krzysztofik@linux.intel.com (cherry picked from commit f301a29f143760ce8d3d6b6a8436d45d3448cde6) Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/gpu/drm/i915/gt/intel_gt_requests.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/gt/intel_gt_requests.c b/drivers/gpu/drm/i915/gt/intel_gt_requests.c index edb881d75630..1dfd01668c79 100644 --- a/drivers/gpu/drm/i915/gt/intel_gt_requests.c +++ b/drivers/gpu/drm/i915/gt/intel_gt_requests.c @@ -199,7 +199,7 @@ out_active: spin_lock(&timelines->lock); if (remaining_timeout) *remaining_timeout = timeout; - return active_count ? timeout : 0; + return active_count ? timeout ?: -ETIME : 0; } static void retire_work_handler(struct work_struct *work) |