1 files changed, 36 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/linux-yocto-4.19.8/1657-drm-amdgpu-fix-invalid-use-of-change_bit.patch b/common/recipes-kernel/linux/linux-yocto-4.19.8/1657-drm-amdgpu-fix-invalid-use-of-change_bit.patch
new file mode 100644
index 00000000..2a7490c1
--- /dev/null
+++ b/common/recipes-kernel/linux/linux-yocto-4.19.8/1657-drm-amdgpu-fix-invalid-use-of-change_bit.patch
@@ -0,0 +1,36 @@
+From bb5de14dd4d922ae4711dfa6802c79aac628207f Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Christian=20K=C3=B6nig?= <christian.koenig@amd.com>
+Date: Mon, 18 Mar 2019 11:09:54 +0100
+Subject: [PATCH 1657/2940] drm/amdgpu: fix invalid use of change_bit
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+We only need to clear the bit in a 32bit integer.
+
+This fixes a crah on ARM64 and PPC64LE caused by
+"drm/amdgpu: update the vm invalidation engine layout V2"
+
+Signed-off-by: Christian König <christian.koenig@amd.com>
+Acked-by: Alex Deucher <alexander.deucher@amd.com>
+Cc: stable@vger.kernel.org
+---
+ drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
+index 593f93d5feb2..efde1c9866f8 100644
+--- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
++++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
+@@ -702,7 +702,7 @@ static int gmc_v9_0_allocate_vm_inv_eng(struct amdgpu_device *adev)
+ 		}
+ 
+ 		ring->vm_inv_eng = inv_eng - 1;
+-		change_bit(inv_eng - 1, (unsigned long *)(&vm_inv_engs[vmhub]));
++		vm_inv_engs[vmhub] &= ~(1 << ring->vm_inv_eng);
+ 
+ 		dev_info(adev->dev, "ring %s uses VM inv eng %u on hub %u\n",
+ 			 ring->name, ring->vm_inv_eng, ring->funcs->vmhub);
+-- 
+2.17.1
+