linux-kernel - [PATCH] drm/i915: fix compiler warnings in intel

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Date:	Wed, 30 Sep 2015 22:22:33 +0800
From:	Geliang Tang <geliangtang@....com>
To:	Daniel Vetter <daniel.vetter@...el.com>,
	Jani Nikula <jani.nikula@...ux.intel.com>,
	David Airlie <airlied@...ux.ie>
Cc:	Geliang Tang <geliangtang@....com>,
	intel-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] drm/i915: fix compiler warnings in intel_audio.c

Fix the following warnings:

  CC      drivers/gpu/drm/i915/intel_audio.o
drivers/gpu/drm/i915/intel_audio.c: In function ‘hsw_audio_codec_enable’:
drivers/gpu/drm/i915/intel_audio.c:332:39: warning: passing argument 2 of ‘audio_rate_need_prog’ discards ‘const’ qualifier from pointer target type [-Wdiscarded-qualifiers]
  if (audio_rate_need_prog(intel_crtc, adjusted_mode)) {
                                       ^
drivers/gpu/drm/i915/intel_audio.c:147:13: note: expected ‘struct drm_display_mode *’ but argument is of type ‘const struct drm_display_mode *’
 static bool audio_rate_need_prog(struct intel_crtc *crtc,
             ^

Signed-off-by: Geliang Tang <geliangtang@....com>
---
 drivers/gpu/drm/i915/intel_audio.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/intel_audio.c b/drivers/gpu/drm/i915/intel_audio.c
index baadd90..72d696b 100644
--- a/drivers/gpu/drm/i915/intel_audio.c
+++ b/drivers/gpu/drm/i915/intel_audio.c
@@ -145,7 +145,7 @@ static uint32_t audio_config_setup_n_reg(int n, uint32_t val)
 
 /* check whether N/CTS/M need be set manually */
 static bool audio_rate_need_prog(struct intel_crtc *crtc,
-					struct drm_display_mode *mode)
+				 const struct drm_display_mode *mode)
 {
 	if (((mode->clock == TMDS_297M) ||
 		 (mode->clock == TMDS_296M)) &&
-- 
2.5.0


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