kernel.git/drivers/gpu/drm/amd/pm/powerplay, branch linux-6.14.y

drm/amd/pm/powerplay/hwmgr/vega20_thermal: Prevent division by zero

2025-04-25T08:51:13Z

commit 4e3d9508c056d7e0a56b58d5c81253e2a0d22b6c upstream. The user can set any speed value. If speed is greater than UINT_MAX/8, division by zero is possible. Found by Linux Verification Center (linuxtesting.org) with SVACE. Fixes: 031db09017da ("drm/amd/powerplay/vega20: enable fan RPM and pwm settings V2") Signed-off-by: Denis Arefev Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman

drm/amd/pm/powerplay/hwmgr/smu7_thermal: Prevent division by zero

2025-04-25T08:51:13Z

commit 7c246a05df51c52fe0852ce56ba10c41e6ed1f39 upstream. The user can set any speed value. If speed is greater than UINT_MAX/8, division by zero is possible. Found by Linux Verification Center (linuxtesting.org) with SVACE. Fixes: c52dcf49195d ("drm/amd/pp: Avoid divide-by-zero in fan_ctrl_set_fan_speed_rpm") Signed-off-by: Denis Arefev Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman

drm/amd/pm/powerplay: Prevent division by zero

2025-04-25T08:51:12Z

commit 4b8c3c0d17c07f301011e2908fecd2ebdcfe3d1c upstream. The user can set any speed value. If speed is greater than UINT_MAX/8, division by zero is possible. Found by Linux Verification Center (linuxtesting.org) with SVACE. Fixes: c52dcf49195d ("drm/amd/pp: Avoid divide-by-zero in fan_ctrl_set_fan_speed_rpm") Signed-off-by: Denis Arefev Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman

drm/amdgpu: handle amdgpu_cgs_create_device() errors in amd_powerplay_create()

2025-04-20T08:22:40Z

[ Upstream commit 1435e895d4fc967d64e9f5bf81e992ac32f5ac76 ] Add error handling to propagate amdgpu_cgs_create_device() failures to the caller. When amdgpu_cgs_create_device() fails, release hwmgr and return -ENOMEM to prevent null pointer dereference. [v1]->[v2]: Change error code from -EINVAL to -ENOMEM. Free hwmgr. Signed-off-by: Wentao Liang Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin

drm/amdgpu: Fix potential NULL pointer dereference in atomctrl_get_smc_sclk_range_table

2024-12-10T15:26:50Z

The function atomctrl_get_smc_sclk_range_table() does not check the return value of smu_atom_get_data_table(). If smu_atom_get_data_table() fails to retrieve SMU_Info table, it returns NULL which is later dereferenced. Found by Linux Verification Center (linuxtesting.org) with SVACE. In practice this should never happen as this code only gets called on polaris chips and the vbios data table will always be present on those chips. Fixes: a23eefa2f461 ("drm/amd/powerplay: enable dpm for baffin.") Signed-off-by: Ivan Stepchenko Signed-off-by: Alex Deucher

drm/amdgpu: pass ip_block in set_clockgating_state

2024-12-10T15:26:47Z

Pass ip_block instead of adev in set_clockgating_state() callback functions. Modify set_clockgating_state()for all correspoding ip blocks. v2: remove all changes for is_idle(), remove type casting Signed-off-by: Boyuan Zhang Acked-by: Christian König Reviewed-by: Sunil Khatri Signed-off-by: Alex Deucher

drm/amdgpu: pass ip_block in set_powergating_state

2024-12-10T15:26:47Z

Pass ip_block instead of adev in set_powergating_state callback function. Modify set_powergating_state ip functions for all correspoding ip blocks. v2: fix a ip block index error. v3: remove type casting Signed-off-by: Boyuan Zhang Suggested-by: Christian König Acked-by: Christian König Acked-by: Alex Deucher Reviewed-by: Sunil Khatri Signed-off-by: Alex Deucher

drm/amd/pm: add inst to set_powergating_by_smu

2024-12-10T15:26:47Z

Add an instance parameter to set_powergating_by_smu() function, and re-write all amd_pm functions accordingly. Then use the instance to call smu_dpm_set_vcn_enable(). v2: remove duplicated functions. remove for-loop in smu_dpm_set_power_gate(), and temporarily move it to to amdgpu_dpm_set_powergating_by_smu(), in order to keep the exact same logic as before, until further separation in next patch. v3: add instance number in error message. Signed-off-by: Boyuan Zhang Acked-by: Christian König Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher

drm/amd/pm: Fix an error handling path in vega10_enable_se_edc_force_stall_config()

2024-12-10T15:26:47Z

In case of error after a amdgpu_gfx_rlc_enter_safe_mode() call, it is not balanced by a corresponding amdgpu_gfx_rlc_exit_safe_mode() call. Add the missing call. Fixes: 9b7b8154cdb8 ("drm/amd/powerplay: added didt support for vega10") Signed-off-by: Christophe JAILLET Signed-off-by: Alex Deucher

drm/amd/pm: remove redundant tools_size check

2024-11-20T14:38:12Z

The check for tools_size being non-zero is redundant as tools_size is explicitly set to a non-zero value (0x19000). Removing the if condition simplifies the code without altering functionality. Signed-off-by: Bhavin Sharma Signed-off-by: Alex Deucher