[PATCH] drm/amdgpu: Fix physical address mask

Alex Deucher alexander.deucher at amd.com
Tue Apr 30 18:51:59 UTC 2024


From: David Belanger <david.belanger at amd.com>

Mask should be 44-bit.

Signed-off-by: David Belanger <david.belanger at amd.com>
Reviewed-by: Harish Kasiviswanathan <Harish.Kasiviswanathan at amd.com>
Acked-by: Alex Deucher <alexander.deucher at amd.com>
Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/gmc_v12_0.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v12_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v12_0.c
index 3e6676fdc1875..2b7b67916c1dd 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v12_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v12_0.c
@@ -763,7 +763,7 @@ static int gmc_v12_0_sw_init(void *handle)
 	 */
 	adev->gmc.mc_mask = 0xffffffffffffULL; /* 48 bit MC */
 
-	r = dma_set_mask_and_coherent(adev->dev, DMA_BIT_MASK(48));
+	r = dma_set_mask_and_coherent(adev->dev, DMA_BIT_MASK(44));
 	if (r) {
 		printk(KERN_WARNING "amdgpu: No suitable DMA available.\n");
 		return r;
-- 
2.44.0



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