drm/i915: Reject excessive SAGV block time

Browse source

If the mailbox returns an exceesively large SAGV block time let's just
reject it. This avoids having to worry about overflows when we add the
SAGV block time to the wm0 latency.

We shall put the limit arbitrarily at U16_MAX. >65msec latency
doesn't really make sense to me in any case.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220309164948.10671-5-ville.syrjala@linux.intel.com
Reviewed-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>

...

This commit is contained in:

Ville Syrjälä 2022-03-09 18:49:44 +02:00

parent 15fc156f22

commit de2cac863d

1 changed files with 6 additions and 0 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

6

drivers/gpu/drm/i915/intel_pm.c

View file