drm/amdgpu: Fix RX550 pcie order dislocation.

Signed-off-by: Tianrui Zhao <zhaotianrui@loongson.cn>
Signed-off-by: Hongchen Zhang <zhanghongchen@loongson.cn>
Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn>
(cherry picked from commit 89494b3)
Signed-off-by: Wentao Guan <guanwentao@uniontech.com>

Author: AaronDot

drivers/gpu/drm/amd/amdgpu/amdgpu_ih.c

@@ -193,13 +193,13 @@ static int amdgpu_ih_fix_loongarch_pcie_order_start(struct amdgpu_ih_ring *ih,
 		msleep(20);
 
 	for (i = rptr; i < wptr; i += 1) {
-		if (le32_to_cpu(ih->ring[i]) == 0xDEADBEFF)
+		if (le32_to_cpu(ih->ring[i]) == 0xDEADBEFF && (i % 4) != 3)
 			goto restart_check;
 	}
 
 	if (rptr > wptr) {
 		for (i = 0; i < wptr; i += 1) {
-			if (le32_to_cpu(ih->ring[i]) == 0xDEADBEFF)
+			if (le32_to_cpu(ih->ring[i]) == 0xDEADBEFF && (i % 4) != 3)
 				goto restart_check;
 		}
 	}
@@ -364,7 +364,8 @@ int amdgpu_ih_process(struct amdgpu_device *adev, struct amdgpu_ih_ring *ih)
 	old_rptr = adev->irq.ih.rptr;
 	r = amdgpu_ih_fix_loongarch_pcie_order_start(&adev->irq.ih, old_rptr, wptr, false);
 	if (r) {
-		if (old_rptr == ((wptr + 16) & adev->irq.ih.ptr_mask))
+		if (old_rptr == ((wptr + 16) & adev->irq.ih.ptr_mask) ||
+		    old_rptr == ((wptr + 32) & adev->irq.ih.ptr_mask))
 			return IRQ_NONE;
 
 		atomic_xchg(&adev->irq.cs_lock, 1);