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| author | Christian König <christian.koenig@amd.com> | 2014-05-02 14:27:42 +0200 |
|---|---|---|
| committer | Christian König <christian.koenig@amd.com> | 2014-05-06 12:18:42 +0200 |
| commit | cde10122dc126a223e783f0b40bdb08cc332ab17 (patch) | |
| tree | d0072c3a7c8fd5eec362572240af3970beb349d1 | |
| parent | aa4c8b36e5fcf70ba5ec7d175da19dac4a33c51a (diff) | |
| download | linux-cde10122dc126a223e783f0b40bdb08cc332ab17.tar.gz | |
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.c | 3 |
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 229be38cc6cadb..b7983aaee44560 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, (ATOM_DEVICE_TV_SUPPORT | ATOM_DEVICE_CV_SUPPORT)) is_tvcv = true; + if (!radeon_crtc->adjusted_clock) + return -EINVAL; + atombios_crtc_set_pll(crtc, adjusted_mode); if (ASIC_IS_DCE4(rdev)) |