From: Sagar Arun Kamble Date: Sun, 23 Aug 2015 12:22:47 +0000 (+0530) Subject: drm/i915: Increase maximum polling time to 50ms for forcewake request/clear ack X-Git-Tag: firefly_0821_release~176^2~721^2~29^2~48 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=83e3337204b2385d20e149c8fe91bb2719978df2;p=firefly-linux-kernel-4.4.55.git drm/i915: Increase maximum polling time to 50ms for forcewake request/clear ack 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 Reviewed by: Alex Dai Signed-off-by: Daniel Vetter --- diff --git a/drivers/gpu/drm/i915/intel_uncore.c b/drivers/gpu/drm/i915/intel_uncore.c index 440e2a5658af..14d0831c6156 100644 --- a/drivers/gpu/drm/i915/intel_uncore.c +++ b/drivers/gpu/drm/i915/intel_uncore.c @@ -27,7 +27,7 @@ #include -#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__))