From 02b312d05d1b51008e37f72f5a30c88e11c51ea5 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Tue, 11 Apr 2017 11:13:37 +0100 Subject: [PATCH] drm/i915: Stop sleeping from inside gen6_bsd_submit_request() submit_request() is called from an atomic context, it's not allowed to sleep. We have to be careful in our parameters to intel_uncore_wait_for_register() to limit ourselves to the atomic wait loop and not incur the wrath of our warnings. Fixes: 6976e74b5fa1 ("drm/i915: Don't allow overuse of __intel_wait_for_register_fw()") Signed-off-by: Chris Wilson Cc: Michal Wajdeczko Cc: Joonas Lahtinen Link: http://patchwork.freedesktop.org/patch/msgid/20170410143807.22725-1-chris@chris-wilson.co.uk Link: http://patchwork.freedesktop.org/patch/msgid/20170411101340.31994-2-chris@chris-wilson.co.uk Reviewed-by: Michal Wajdeczko Reviewed-by: Tvrtko Ursulin --- drivers/gpu/drm/i915/intel_ringbuffer.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c index c98acc27279a..331da59a1eb5 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.c +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c @@ -1729,11 +1729,11 @@ static void gen6_bsd_submit_request(struct drm_i915_gem_request *request) I915_WRITE64_FW(GEN6_BSD_RNCID, 0x0); /* Wait for the ring not to be idle, i.e. for it to wake up. */ - if (intel_wait_for_register_fw(dev_priv, - GEN6_BSD_SLEEP_PSMI_CONTROL, - GEN6_BSD_SLEEP_INDICATOR, - 0, - 50)) + if (__intel_wait_for_register_fw(dev_priv, + GEN6_BSD_SLEEP_PSMI_CONTROL, + GEN6_BSD_SLEEP_INDICATOR, + 0, + 1000, 0, NULL)) DRM_ERROR("timed out waiting for the BSD ring to wake up\n"); /* Now that the ring is fully powered up, update the tail */ -- 2.20.1