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 A191C4A33EC for ; Sat, 28 Feb 2026 17:49:43 +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=1772300983; cv=none; b=Zt7FFRsqxvMA0Xrw2aXZ0Z1GCLJNpECgsLXdgOMwemZ8i69wAKtI9e9o6vQ9ZZMKkM4YIVrWBsBcbHPymZLHgZ3BTQ7Ceo/oUsP5fwph4fUpyLL3d5EZ4F+ge22Ze0eomtVP6fB9XnBQtee+Aki35G+lV5DJJMAGfSRX7HOxYHE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772300983; c=relaxed/simple; bh=l6QofvuS+CaSX3iM2RSm0oFxPH36SSCZb8kic2G8jVo=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=t9/5JY0UR0kKX0qEIomE0tip3150wvLBXKwCDtnaMyNCmfat7RU/XsuO4VmMgK2ugvrf/DzPYoG7YHow8o/pzDQ27RimYWIfe+Mz6+LHFELTMzraGpYGejd2iDHXMrvwDtkChHgGsPXQTB9+hs5AM79tTSK3zNi10lA9KwONiQI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=e9ZYR5kn; 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="e9ZYR5kn" Received: by smtp.kernel.org (Postfix) with ESMTPSA id EC271C116D0; Sat, 28 Feb 2026 17:49:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772300983; bh=l6QofvuS+CaSX3iM2RSm0oFxPH36SSCZb8kic2G8jVo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=e9ZYR5knklbWxQKSAdQhzPEFmLDupMlTfhPGOBu4SRaQXcD6kISRr5e6FN0ELLPXt UtmRgVxkoymjMmOHhdE2XmyyjCy8xbZItYOhZlts9n/+CSVego5yVYetKnmUG8n1VY bS2lZcAfTOgHdID5h9mQppHivdkvJd63l1RgO4E2mXFk/ve8uJXs1WsPczd3mxceHf 7vpvnKGO8U0NMFYHb+4omjNY5z20j9qcsca830r7/XWOHP7Tua3dK1W3JTOhu5JMKv JkpGLPf9ubTjWuhQJ/LjHT5pwvDFYkPf1sMiExq9MDKEzmATkIG90OQrAmmYN2sHJt JpxkbGi1fEXNA== From: Sasha Levin To: patches@lists.linux.dev Cc: Likun Gao , Hawking Zhang , Alex Deucher , Sasha Levin Subject: [PATCH 6.18 113/752] drm/amdgpu: fix NULL pointer issue buffer funcs Date: Sat, 28 Feb 2026 12:37:04 -0500 Message-ID: <20260228174750.1542406-113-sashal@kernel.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260228174750.1542406-1-sashal@kernel.org> References: <20260228174750.1542406-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: patches@lists.linux.dev 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 53b33a636971a..c052da36aa9c2 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -3280,7 +3280,8 @@ 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