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drm/amdgpu: avoid out of bounds access on array interrupt_status_offsets

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The check for an out of bound index into array interrupt_status_offsets
is off-by-one. Fix this and also don't compared to a hard coded array
size but use adev->mode_info.num_hpd instead.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Colin Ian King 2016-09-20 16:49:31 +01:00 committed by Alex Deucher
parent 4d446656fa
commit 664a08bb90
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/amd/amdgpu/dce_v6_0.c
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@ -2782,7 +2782,7 @@ static int dce_v6_0_hpd_irq(struct amdgpu_device *adev,
uint32_t disp_int, mask, int_control, tmp; uint32_t disp_int, mask, int_control, tmp;
unsigned hpd; unsigned hpd;
if (entry->src_data > 6) { if (entry->src_data >= adev->mode_info.num_hpd) {
DRM_DEBUG("Unhandled interrupt: %d %d\n", entry->src_id, entry->src_data); DRM_DEBUG("Unhandled interrupt: %d %d\n", entry->src_id, entry->src_data);
return 0; return 0;
} }