On 11/04/2017 11:13, Chris Wilson wrote:
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 <chris@xxxxxxxxxxxxxxxxxx>
Cc: Michal Wajdeczko <michal.wajdeczko@xxxxxxxxx>
Cc: Joonas Lahtinen <joonas.lahtinen@xxxxxxxxxxxxxxx>
Link: http://patchwork.freedesktop.org/patch/msgid/20170410143807.22725-1-chris@xxxxxxxxxxxxxxxxxx
---
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 */
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
Regards,
Tvrtko
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