From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6DD124D98FD; Sat, 28 Feb 2026 17:35:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772300113; cv=none; b=je5UIDL8YhlRVgc+lNsbYK9VNzAmCXRmZCj3MZbBEBqNcr4IvKbWmHnK63prRFXDvJHeDq1+4HE2yCc20CCsZjhAGBeT7+tmdgwIDvzZZFhyQZt5oQCeeV1GDqKOcRtLGKROLXs3ERMcKXF3azu8jsVVCEfe2qZEHzk1RW09Pag= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772300113; c=relaxed/simple; bh=4tVWj2D0Kmv3FbEwQy/QSrljpJfLDz+tARS2Fp3sK08=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=q5Si69ySnat/PGPeYkjPt0N1ZPQI0FrTsnaHiYvSRd7+rDmrY26zxd26Xc1rQ7/oVsMkH/ytGeo4S+jOYL+JnpukdUz3rVX8D6K8keUEoxefZNLfZIPYuDvYt4Ni3HMJuEAtzIk3lKRHA0Nl2Q3QaANVnOwEtfZryUHNd9XZn58= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=HLCjrVup; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="HLCjrVup" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A2BFAC19423; Sat, 28 Feb 2026 17:35:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772300113; bh=4tVWj2D0Kmv3FbEwQy/QSrljpJfLDz+tARS2Fp3sK08=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=HLCjrVupEm/W5V/qS56iH12uQNzVCgZwHBQyqniJnV/ylrLr2yEcvS7J0ibN4sVcX ZPeYXQUTeyAZCueQVN+iYjNZeBiSt3C9CdSLQ4xsl49kVysHvm8HrKewiLgcaeozV1 HU+rczvTTU0o6LtclZ3At2ZBSHZBwfbeR6r3KyT1KjNGTRFeWDqtlUjuYrxjzQrEnb mecPErSeMVZPSfjNFjbbB4CQmJ74XxqF+9ffKz5DijA4jD/27btNP5qz72vJYc9f8J W9MDI4JKuLwd+42nTK6b7s8Txrv+X3/b15epiBkkZxFTN8KZeJpaHgzCiyNfkY5tbw qLZkTZH+nTzAw== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Likun Gao , Hawking Zhang , Alex Deucher , Sasha Levin Subject: [PATCH 6.19 130/844] drm/amdgpu: fix NULL pointer issue buffer funcs Date: Sat, 28 Feb 2026 12:20:43 -0500 Message-ID: <20260228173244.1509663-131-sashal@kernel.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260228173244.1509663-1-sashal@kernel.org> References: <20260228173244.1509663-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit From: Likun Gao [ Upstream commit 9877a865d62c9c3e0f4cc369dc9ca9f7f24f5ee9 ] If SDMA block not enabled, buffer_funcs will not initialize, fix the null pointer issue if buffer_funcs not initialized. Signed-off-by: Likun Gao Reviewed-by: Hawking Zhang Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c index d2c3885de711f..ba6fb23b840a0 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -3309,7 +3309,8 @@ static int amdgpu_device_ip_init(struct amdgpu_device *adev) if (r) goto init_failed; - if (adev->mman.buffer_funcs_ring->sched.ready) + if (adev->mman.buffer_funcs_ring && + adev->mman.buffer_funcs_ring->sched.ready) amdgpu_ttm_set_buffer_funcs_status(adev, true); /* Don't init kfd if whole hive need to be reset during init */ -- 2.51.0