diff options
| -rw-r--r-- | drivers/gpu/drm/i915/i915_hwmon.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_hwmon.c b/drivers/gpu/drm/i915/i915_hwmon.c index c588a17f97e9..cca7a4350ec8 100644 --- a/drivers/gpu/drm/i915/i915_hwmon.c +++ b/drivers/gpu/drm/i915/i915_hwmon.c @@ -293,6 +293,10 @@ static const struct hwmon_channel_info *hwm_gt_info[] = { /* I1 is exposed as power_crit or as curr_crit depending on bit 31 */ static int hwm_pcode_read_i1(struct drm_i915_private *i915, u32 *uval) { + /* Avoid ILLEGAL_SUBCOMMAND "mailbox access failed" warning in snb_pcode_read */ + if (IS_DG1(i915) || IS_DG2(i915)) + return -ENXIO; + return snb_pcode_read_p(&i915->uncore, PCODE_POWER_SETUP, POWER_SETUP_SUBCOMMAND_READ_I1, 0, uval); } |