[PATCH] amdgpu/pm: Disable managing hwmon sysfs attributes for ONEVF mode

[Kasiviswanathan, Harish]

[AMD Official Use Only]

Reviewed-by: Harish Kasiviswanathan <Harish.Kasiviswanathan at amd.com>

-----Original Message-----
From: amd-gfx <amd-gfx-bounces at lists.freedesktop.org> On Behalf Of Kasiviswanathan, Harish
Sent: Thursday, February 17, 2022 2:17 PM
To: Slivka, Danijel <Danijel.Slivka at amd.com>; amd-gfx at lists.freedesktop.org
Cc: Slivka, Danijel <Danijel.Slivka at amd.com>
Subject: RE: [PATCH] amdgpu/pm: Disable managing hwmon sysfs attributes for ONEVF mode

[AMD Official Use Only]

Acked-by: Harish Kasiviswanathan <Harish.Kasiviswanathan at amd.com>

-----Original Message-----
From: amd-gfx <amd-gfx-bounces at lists.freedesktop.org> On Behalf Of Danijel Slivka
Sent: Thursday, February 10, 2022 8:24 PM
To: amd-gfx at lists.freedesktop.org
Cc: Slivka, Danijel <Danijel.Slivka at amd.com>
Subject: [PATCH] amdgpu/pm: Disable managing hwmon sysfs attributes for ONEVF mode

This patch prohibits performing of set commands on all hwmon attributes through sysfs in ONEVF mode.

Signed-off-by: Danijel Slivka <danijel.slivka at amd.com>
---
 drivers/gpu/drm/amd/pm/amdgpu_pm.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/amd/pm/amdgpu_pm.c b/drivers/gpu/drm/amd/pm/amdgpu_pm.c
index ad5da252228b..3cec023a7b06 100644
--- a/drivers/gpu/drm/amd/pm/amdgpu_pm.c
+++ b/drivers/gpu/drm/amd/pm/amdgpu_pm.c
@@ -3161,6 +3161,10 @@ static umode_t hwmon_attributes_visible(struct kobject *kobj,
 	if (amdgpu_sriov_vf(adev) && !amdgpu_sriov_is_pp_one_vf(adev))
 		return 0;
 
+	/* under pp one vf mode manage of hwmon attributes is not supported */
+	if (amdgpu_sriov_is_pp_one_vf(adev))
+		effective_mode &= ~S_IWUSR;
+
 	/* Skip fan attributes if fan is not present */
 	if (adev->pm.no_fan && (attr == &sensor_dev_attr_pwm1.dev_attr.attr ||
 	    attr == &sensor_dev_attr_pwm1_enable.dev_attr.attr ||
--
2.25.1