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| author | Alex Deucher <alexander.deucher@amd.com> | 2012-08-15 17:13:53 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-12-10 10:59:39 -0800 |
| commit | dfbc8b9eab0b50753a397de1abed62d4397e13ca (patch) | |
| tree | adfc1a9201edeb9ac6ea7c37d77ab28b5005bc8f | |
| parent | c004e0d6faac4da0488b72f0791a5f3de26c4e4e (diff) | |
| download | lwn-dfbc8b9eab0b50753a397de1abed62d4397e13ca.tar.gz lwn-dfbc8b9eab0b50753a397de1abed62d4397e13ca.zip | |
drm/radeon/dce4+: don't use radeon_crtc for vblank callback
commit 4a15903db02026728d0cf2755c6fabae16b8db6a upstream.
This might be called before we've allocated the radeon_crtcs
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/gpu/drm/radeon/evergreen.c | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c index e5328da70f84..9f5c943b8bf4 100644 --- a/drivers/gpu/drm/radeon/evergreen.c +++ b/drivers/gpu/drm/radeon/evergreen.c @@ -37,6 +37,16 @@ #define EVERGREEN_PFP_UCODE_SIZE 1120 #define EVERGREEN_PM4_UCODE_SIZE 1376 +static const u32 crtc_offsets[6] = +{ + EVERGREEN_CRTC0_REGISTER_OFFSET, + EVERGREEN_CRTC1_REGISTER_OFFSET, + EVERGREEN_CRTC2_REGISTER_OFFSET, + EVERGREEN_CRTC3_REGISTER_OFFSET, + EVERGREEN_CRTC4_REGISTER_OFFSET, + EVERGREEN_CRTC5_REGISTER_OFFSET +}; + static void evergreen_gpu_init(struct radeon_device *rdev); void evergreen_fini(struct radeon_device *rdev); void evergreen_pcie_gen2_enable(struct radeon_device *rdev); @@ -101,17 +111,19 @@ void evergreen_fix_pci_max_read_req_size(struct radeon_device *rdev) void dce4_wait_for_vblank(struct radeon_device *rdev, int crtc) { - struct radeon_crtc *radeon_crtc = rdev->mode_info.crtcs[crtc]; int i; - if (RREG32(EVERGREEN_CRTC_CONTROL + radeon_crtc->crtc_offset) & EVERGREEN_CRTC_MASTER_EN) { + if (crtc >= rdev->num_crtc) + return; + + if (RREG32(EVERGREEN_CRTC_CONTROL + crtc_offsets[crtc]) & EVERGREEN_CRTC_MASTER_EN) { for (i = 0; i < rdev->usec_timeout; i++) { - if (!(RREG32(EVERGREEN_CRTC_STATUS + radeon_crtc->crtc_offset) & EVERGREEN_CRTC_V_BLANK)) + if (!(RREG32(EVERGREEN_CRTC_STATUS + crtc_offsets[crtc]) & EVERGREEN_CRTC_V_BLANK)) break; udelay(1); } for (i = 0; i < rdev->usec_timeout; i++) { - if (RREG32(EVERGREEN_CRTC_STATUS + radeon_crtc->crtc_offset) & EVERGREEN_CRTC_V_BLANK) + if (RREG32(EVERGREEN_CRTC_STATUS + crtc_offsets[crtc]) & EVERGREEN_CRTC_V_BLANK) break; udelay(1); } |