From: Janusz Krzysztofik Date: Fri, 3 Sep 2021 14:28:37 +0000 (+0200) Subject: drm/i915: Mark GPU wedging on driver unregister unrecoverable X-Git-Tag: baikal/mips/sdk6.1~7173^2~8^2~66 X-Git-Url: https://git.baikalelectronics.ru/sdk/?a=commitdiff_plain;h=a0e30227d5a0fa7e272f3720b20623702e050fad;p=kernel.git drm/i915: Mark GPU wedging on driver unregister unrecoverable GPU wedged flag now set on driver unregister to prevent from further using the GPU can be then cleared unintentionally when calling __intel_gt_unset_wedged() still before the flag is finally marked unrecoverable. We need to have it marked unrecoverable earlier. Implement that by replacing a call to intel_gt_set_wedged() in intel_gt_driver_unregister() with intel_gt_set_wedged_on_fini(). With the above in place, intel_gt_set_wedged_on_fini() is now called twice on driver remove, second time from __intel_gt_disable(). This seems harmless, while dropping intel_gt_set_wedged_on_fini() from __intel_gt_disable() proved to break some driver probe error unwind paths as well as mock selftest exit path. Signed-off-by: Janusz Krzysztofik Cc: Michał Winiarski Reviewed-by: Michał Winiarski Signed-off-by: Matt Roper Link: https://patchwork.freedesktop.org/patch/msgid/20210903142837.216978-1-janusz.krzysztofik@linux.intel.com --- diff --git a/drivers/gpu/drm/i915/gt/intel_gt.c b/drivers/gpu/drm/i915/gt/intel_gt.c index 2aeaae036a6f8..55e87aff51d2b 100644 --- a/drivers/gpu/drm/i915/gt/intel_gt.c +++ b/drivers/gpu/drm/i915/gt/intel_gt.c @@ -752,7 +752,7 @@ void intel_gt_driver_unregister(struct intel_gt *gt) * all in-flight requests so that we can quickly unbind the active * resources. */ - intel_gt_set_wedged(gt); + intel_gt_set_wedged_on_fini(gt); /* Scrub all HW state upon release */ with_intel_runtime_pm(gt->uncore->rpm, wakeref)