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authorDave Airlie <airlied@redhat.com>2024-03-22 10:33:27 +1000
committerDave Airlie <airlied@redhat.com>2024-03-22 10:34:12 +1000
commitcafd86cbdc607eadc28a008cddacd78f0894c628 (patch)
tree55ea185623c92bb527c8e69d1c9938575bbe7da1 /drivers/gpu/drm/amd/amdgpu/ih_v7_0.c
parent921074ab8e07346f8be4c7002ad12a1bd8dccb46 (diff)
parentbc55c344b06f7e6f99eb92d393ff0a84c1532514 (diff)
Merge tag 'amd-drm-fixes-6.9-2024-03-21' of https://gitlab.freedesktop.org/agd5f/linux into drm-next
amd-drm-fixes-6.9-2024-03-21: amdgpu: - Freesync fixes - UAF IOCTL fixes - Fix mmhub client ID mapping - IH 7.0 fix - DML2 fixes - VCN 4.0.6 fix - GART bind fix - GPU reset fix - SR-IOV fix - OD table handling fixes - Fix TA handling on boards without display hardware - DML1 fix - ABM fix - eDP panel fix - DPPCLK fix - HDCP fix - Revert incorrect error case handling in ioremap - VPE fix - HDMI fixes - SDMA 4.4.2 fix - Other misc fixes amdkfd: - Fix duplicate BO handling in process restore Signed-off-by: Dave Airlie <airlied@redhat.com> From: Alex Deucher <alexander.deucher@amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240321220514.1418288-1-alexander.deucher@amd.com
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/ih_v7_0.c')
-rw-r--r--drivers/gpu/drm/amd/amdgpu/ih_v7_0.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/ih_v7_0.c b/drivers/gpu/drm/amd/amdgpu/ih_v7_0.c
index 16fe428c0722..7aed96fa10a9 100644
--- a/drivers/gpu/drm/amd/amdgpu/ih_v7_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/ih_v7_0.c
@@ -418,6 +418,12 @@ static u32 ih_v7_0_get_wptr(struct amdgpu_device *adev,
tmp = RREG32_NO_KIQ(ih_regs->ih_rb_cntl);
tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, WPTR_OVERFLOW_CLEAR, 1);
WREG32_NO_KIQ(ih_regs->ih_rb_cntl, tmp);
+
+ /* Unset the CLEAR_OVERFLOW bit immediately so new overflows
+ * can be detected.
+ */
+ tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, WPTR_OVERFLOW_CLEAR, 0);
+ WREG32_NO_KIQ(ih_regs->ih_rb_cntl, tmp);
out:
return (wptr & ih->ptr_mask);
}