From: Ville Syrjälä ville.syrjala@linux.intel.com
commit 8d9d2a723d64b650f2e6423024ccb4a33f0cdc40 upstream.
The bogus loop from compute_dbuf_slices() was copied into check_mbus_joined() as well. So this lookup is wrong as well. Fix it.
Cc: stable@vger.kernel.org Fixes: f4dc00863226 ("drm/i915/adl_p: MBUS programming") Signed-off-by: Ville Syrjälä ville.syrjala@linux.intel.com Link: https://patchwork.freedesktop.org/patch/msgid/20220207132700.481-2-ville.syr... Reviewed-by: Jani Nikula jani.nikula@intel.com (cherry picked from commit 053f2b85631316a9226f6340c1c0fd95634f7a5b) Signed-off-by: Tvrtko Ursulin tvrtko.ursulin@intel.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/gpu/drm/i915/intel_pm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -4843,7 +4843,7 @@ static bool check_mbus_joined(u8 active_ { int i;
- for (i = 0; i < dbuf_slices[i].active_pipes; i++) { + for (i = 0; dbuf_slices[i].active_pipes != 0; i++) { if (dbuf_slices[i].active_pipes == active_pipes) return dbuf_slices[i].join_mbus; }