This is a note to let you know that I've just added the patch titled
drm/amdgpu: fix unchecked return value warning for amdgpu_atombios
to the 6.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-amdgpu-fix-unchecked-return-value-warning-for-am.patch
and it can be found in the queue-6.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit c41c7229251589c515b35d1cad324ace9059fb3d
Author: Tim Huang <tim.huang@xxxxxxx>
Date: Thu Aug 1 13:47:55 2024 +0800
drm/amdgpu: fix unchecked return value warning for amdgpu_atombios
[ Upstream commit 92549780e32718d64a6d08bbbb3c6fffecb541c7 ]
This resolves the unchecded return value warning reported by Coverity.
Signed-off-by: Tim Huang <tim.huang@xxxxxxx>
Reviewed-by: Jesse Zhang <jesse.zhang@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c
index 7dc102f0bc1d3..0c8975ac5af9e 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c
@@ -1018,8 +1018,9 @@ int amdgpu_atombios_get_clock_dividers(struct amdgpu_device *adev,
if (clock_type == COMPUTE_ENGINE_PLL_PARAM) {
args.v3.ulClockParams = cpu_to_le32((clock_type << 24) | clock);
- amdgpu_atom_execute_table(adev->mode_info.atom_context, index, (uint32_t *)&args,
- sizeof(args));
+ if (amdgpu_atom_execute_table(adev->mode_info.atom_context,
+ index, (uint32_t *)&args, sizeof(args)))
+ return -EINVAL;
dividers->post_div = args.v3.ucPostDiv;
dividers->enable_post_div = (args.v3.ucCntlFlag &
@@ -1039,8 +1040,9 @@ int amdgpu_atombios_get_clock_dividers(struct amdgpu_device *adev,
if (strobe_mode)
args.v5.ucInputFlag = ATOM_PLL_INPUT_FLAG_PLL_STROBE_MODE_EN;
- amdgpu_atom_execute_table(adev->mode_info.atom_context, index, (uint32_t *)&args,
- sizeof(args));
+ if (amdgpu_atom_execute_table(adev->mode_info.atom_context,
+ index, (uint32_t *)&args, sizeof(args)))
+ return -EINVAL;
dividers->post_div = args.v5.ucPostDiv;
dividers->enable_post_div = (args.v5.ucCntlFlag &
@@ -1058,8 +1060,9 @@ int amdgpu_atombios_get_clock_dividers(struct amdgpu_device *adev,
/* fusion */
args.v4.ulClock = cpu_to_le32(clock); /* 10 khz */
- amdgpu_atom_execute_table(adev->mode_info.atom_context, index, (uint32_t *)&args,
- sizeof(args));
+ if (amdgpu_atom_execute_table(adev->mode_info.atom_context,
+ index, (uint32_t *)&args, sizeof(args)))
+ return -EINVAL;
dividers->post_divider = dividers->post_div = args.v4.ucPostDiv;
dividers->real_clock = le32_to_cpu(args.v4.ulClock);
@@ -1070,8 +1073,9 @@ int amdgpu_atombios_get_clock_dividers(struct amdgpu_device *adev,
args.v6_in.ulClock.ulComputeClockFlag = clock_type;
args.v6_in.ulClock.ulClockFreq = cpu_to_le32(clock); /* 10 khz */
- amdgpu_atom_execute_table(adev->mode_info.atom_context, index, (uint32_t *)&args,
- sizeof(args));
+ if (amdgpu_atom_execute_table(adev->mode_info.atom_context,
+ index, (uint32_t *)&args, sizeof(args)))
+ return -EINVAL;
dividers->whole_fb_div = le16_to_cpu(args.v6_out.ulFbDiv.usFbDiv);
dividers->frac_fb_div = le16_to_cpu(args.v6_out.ulFbDiv.usFbDivFrac);
@@ -1113,8 +1117,9 @@ int amdgpu_atombios_get_memory_pll_dividers(struct amdgpu_device *adev,
if (strobe_mode)
args.ucInputFlag |= MPLL_INPUT_FLAG_STROBE_MODE_EN;
- amdgpu_atom_execute_table(adev->mode_info.atom_context, index, (uint32_t *)&args,
- sizeof(args));
+ if (amdgpu_atom_execute_table(adev->mode_info.atom_context,
+ index, (uint32_t *)&args, sizeof(args)))
+ return -EINVAL;
mpll_param->clkfrac = le16_to_cpu(args.ulFbDiv.usFbDivFrac);
mpll_param->clkf = le16_to_cpu(args.ulFbDiv.usFbDiv);
@@ -1211,8 +1216,9 @@ int amdgpu_atombios_get_max_vddc(struct amdgpu_device *adev, u8 voltage_type,
args.v2.ucVoltageMode = 0;
args.v2.usVoltageLevel = 0;
- amdgpu_atom_execute_table(adev->mode_info.atom_context, index, (uint32_t *)&args,
- sizeof(args));
+ if (amdgpu_atom_execute_table(adev->mode_info.atom_context,
+ index, (uint32_t *)&args, sizeof(args)))
+ return -EINVAL;
*voltage = le16_to_cpu(args.v2.usVoltageLevel);
break;
@@ -1221,8 +1227,9 @@ int amdgpu_atombios_get_max_vddc(struct amdgpu_device *adev, u8 voltage_type,
args.v3.ucVoltageMode = ATOM_GET_VOLTAGE_LEVEL;
args.v3.usVoltageLevel = cpu_to_le16(voltage_id);
- amdgpu_atom_execute_table(adev->mode_info.atom_context, index, (uint32_t *)&args,
- sizeof(args));
+ if (amdgpu_atom_execute_table(adev->mode_info.atom_context,
+ index, (uint32_t *)&args, sizeof(args)))
+ return -EINVAL;
*voltage = le16_to_cpu(args.v3.usVoltageLevel);
break;
