accel/ivpu: Do not use irqsave in ivpu_ipc_dispatch

ivpu_ipc_dispatch is always called with irqs disabled. Add lockdep
assertion and remove unneeded _irqsave/_irqrestore.
Signed-off-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
Signed-off-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Reviewed-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231113170252.758137-3-jacek.lawrynowicz@linux.intel.com

drivers/accel/ivpu/ivpu_ipc.c

@@ -367,9 +367,9 @@ ivpu_ipc_dispatch(struct ivpu_device *vdev, struct ivpu_ipc_consumer *cons,
 {
 	struct ivpu_ipc_info *ipc = vdev->ipc;
 	struct ivpu_ipc_rx_msg *rx_msg;
-	unsigned long flags;
 
 	lockdep_assert_held(&ipc->cons_list_lock);
+	lockdep_assert_irqs_disabled();
 
 	rx_msg = kzalloc(sizeof(*rx_msg), GFP_ATOMIC);
 	if (!rx_msg) {
@@ -382,9 +382,9 @@ ivpu_ipc_dispatch(struct ivpu_device *vdev, struct ivpu_ipc_consumer *cons,
 	rx_msg->ipc_hdr = ipc_hdr;
 	rx_msg->jsm_msg = jsm_msg;
 
-	spin_lock_irqsave(&cons->rx_lock, flags);
+	spin_lock(&cons->rx_lock);
 	list_add_tail(&rx_msg->link, &cons->rx_msg_list);
-	spin_unlock_irqrestore(&cons->rx_lock, flags);
+	spin_unlock(&cons->rx_lock);
 
 	wake_up(&cons->rx_msg_wq);
 }