From: Chris Wilson Date: Mon, 11 Feb 2019 13:50:40 +0000 (+0000) Subject: drm/i915: Use synchronize_srcu_expedited() for resets X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=7c95c10ee993b5da7120f4f705cb2b6c9b8688ad;p=openwrt%2Fstaging%2Fblogic.git drm/i915: Use synchronize_srcu_expedited() for resets We impose upon ourselves a strict timeout for resets (to ensure forward progress by use of a failsafe). Prefer to use the expedited synchronisation function in this case to reduce the likelihood of a spurious delay being treated as a deadlock. Signed-off-by: Chris Wilson Cc: Mika Kuoppala Link: https://patchwork.freedesktop.org/patch/msgid/20190211135040.1234-2-chris@chris-wilson.co.uk Reviewed-by: Mika Kuoppala --- diff --git a/drivers/gpu/drm/i915/i915_reset.c b/drivers/gpu/drm/i915/i915_reset.c index c2b7570730c2..c1b53533ada6 100644 --- a/drivers/gpu/drm/i915/i915_reset.c +++ b/drivers/gpu/drm/i915/i915_reset.c @@ -1138,7 +1138,7 @@ static void i915_reset_device(struct drm_i915_private *i915, intel_prepare_reset(i915); /* Flush everyone using a resource about to be clobbered */ - synchronize_srcu(&error->reset_backoff_srcu); + synchronize_srcu_expedited(&error->reset_backoff_srcu); mutex_lock(&error->wedge_mutex); i915_reset(i915, engine_mask, reason);