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drm/i915: Increase maximum polling time to 50ms for forcewake request/clear ack

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On BXT, We Observe timeout for forcewake request completion with 2ms polling period as given here:
[drm:fw_domains_get] ERROR render: timed out waiting for forcewake ack request.
Polling for 50ms is recommended to avoid these timeouts.

Change-Id: Ie715b0069a3049606e9602bc5e97a6511890864d
Signed-off-by: Sagar Arun Kamble <sagar.a.kamble@intel.com>
Reviewed by: Alex Dai <yu.dai@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Sagar Arun Kamble 2015-08-23 17:52:47 +05:30 committed by Daniel Vetter
parent 23eafea6a9
commit 83e3337204
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/i915/intel_uncore.c
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@ -27,7 +27,7 @@
#include <linux/pm_runtime.h>
#define FORCEWAKE_ACK_TIMEOUT_MS 2
#define FORCEWAKE_ACK_TIMEOUT_MS 50
#define __raw_i915_read8(dev_priv__, reg__) readb((dev_priv__)->regs + (reg__))
#define __raw_i915_write8(dev_priv__, reg__, val__) writeb(val__, (dev_priv__)->regs + (reg__))