drm/i915/guc: Skip communication warning on reset in progress

[ Upstream commit 1696b0c ]

GuC IRQ and tasklet handler receive just single G2H message, and let other
messages to be received from next tasklet. During this chained tasklet
process, if reset process started, communication will be disabled.
Skip warning for this condition.

Fixes: 65dd4ed ("drm/i915/guc: Don't receive all G2H messages in irq handler")
Closes: https://gitlab.freedesktop.org/drm/i915/kernel/-/issues/15018
Signed-off-by: Zhanjun Dong <[email protected]>
Reviewed-by: Vinay Belgaumkar <[email protected]>
Signed-off-by: Daniele Ceraolo Spurio <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
(cherry picked from commit 604b5ee4a653a70979ce689dbd6a5d942eb016bf)
Signed-off-by: Rodrigo Vivi <[email protected]>
Signed-off-by: Sasha Levin <[email protected]>

Author: zhanjun

drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c

@@ -1324,9 +1324,16 @@ static int ct_receive(struct intel_guc_ct *ct)
 
 static void ct_try_receive_message(struct intel_guc_ct *ct)
 {
+	struct intel_guc *guc = ct_to_guc(ct);
 	int ret;
 
-	if (GEM_WARN_ON(!ct->enabled))
+	if (!ct->enabled) {
+		GEM_WARN_ON(!guc_to_gt(guc)->uc.reset_in_progress);
+		return;
+	}
+
+	/* When interrupt disabled, message handling is not expected */
+	if (!guc->interrupts.enabled)
 		return;
 
 	ret = ct_receive(ct);