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authorChristian König <christian.koenig@amd.com>2014-05-02 08:27:42 -0400
committerChristian König <christian.koenig@amd.com>2014-05-06 06:18:42 -0400
commitcde10122dc126a223e783f0b40bdb08cc332ab17 (patch)
treed0072c3a7c8fd5eec362572240af3970beb349d1
parentaa4c8b36e5fcf70ba5ec7d175da19dac4a33c51a (diff)
drm/radeon: check that we have a clock before PLL setup
Partially fixes: https://bugzilla.kernel.org/show_bug.cgi?id=75211 Signed-off-by: Christian König <christian.koenig@amd.com>
-rw-r--r--drivers/gpu/drm/radeon/atombios_crtc.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/atombios_crtc.c b/drivers/gpu/drm/radeon/atombios_crtc.c
index 229be38cc6ca..b7983aaee445 100644
--- a/drivers/gpu/drm/radeon/atombios_crtc.c
+++ b/drivers/gpu/drm/radeon/atombios_crtc.c
@@ -1901,6 +1901,9 @@ int atombios_crtc_mode_set(struct drm_crtc *crtc,
1901 (ATOM_DEVICE_TV_SUPPORT | ATOM_DEVICE_CV_SUPPORT)) 1901 (ATOM_DEVICE_TV_SUPPORT | ATOM_DEVICE_CV_SUPPORT))
1902 is_tvcv = true; 1902 is_tvcv = true;
1903 1903
1904 if (!radeon_crtc->adjusted_clock)
1905 return -EINVAL;
1906
1904 atombios_crtc_set_pll(crtc, adjusted_mode); 1907 atombios_crtc_set_pll(crtc, adjusted_mode);
1905 1908
1906 if (ASIC_IS_DCE4(rdev)) 1909 if (ASIC_IS_DCE4(rdev))