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[V2,05/13] usb: xhci: Remove in_interrupt() checks

Message ID 20201019101110.148631116@linutronix.de (mailing list archive)
State New, archived
Headers show
Series USB: Cleanup in_interupt/in_irq/in_atomic() usage | expand

Commit Message

Thomas Gleixner Oct. 19, 2020, 10:06 a.m. UTC 
From: Ahmed S. Darwish <a.darwish@linutronix.de>

The usage of in_interrupt() in drivers is phased out for various reasons.

xhci_set_hc_event_deq() has an !in_interrupt() check which is pointless
because the function is only invoked from xhci_mem_init() which is clearly
task context as it does GFP_KERNEL allocations. Remove it.

xhci_urb_enqueue() prints a debug message if an URB is submitted after the
underlying hardware was suspended. But that warning is only issued when
in_interrupt() is true, which makes no sense. Simply return -ESHUTDOWN and
be done with it.

Signed-off-by: Ahmed S. Darwish <a.darwish@linutronix.de>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Mathias Nyman <mathias.nyman@intel.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: linux-usb@vger.kernel.org
---
 drivers/usb/host/xhci-mem.c |    2 +-
 drivers/usb/host/xhci.c     |    6 ++----
 2 files changed, 3 insertions(+), 5 deletions(-)
diff mbox series

Patch

--- a/drivers/usb/host/xhci-mem.c
+++ b/drivers/usb/host/xhci-mem.c
@@ -2110,7 +2110,7 @@  static void xhci_set_hc_event_deq(struct
 
 	deq = xhci_trb_virt_to_dma(xhci->event_ring->deq_seg,
 			xhci->event_ring->dequeue);
-	if (deq == 0 && !in_interrupt())
+	if (!deq)
 		xhci_warn(xhci, "WARN something wrong with SW event ring "
 				"dequeue ptr.\n");
 	/* Update HC event ring dequeue pointer */
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -1473,11 +1473,9 @@  static int xhci_urb_enqueue(struct usb_h
 	ep_index = xhci_get_endpoint_index(&urb->ep->desc);
 	ep_state = &xhci->devs[slot_id]->eps[ep_index].ep_state;
 
-	if (!HCD_HW_ACCESSIBLE(hcd)) {
-		if (!in_interrupt())
-			xhci_dbg(xhci, "urb submitted during PCI suspend\n");
+	if (!HCD_HW_ACCESSIBLE(hcd))
 		return -ESHUTDOWN;
-	}
+
 	if (xhci->devs[slot_id]->flags & VDEV_PORT_ERROR) {
 		xhci_dbg(xhci, "Can't queue urb, port error, link inactive\n");
 		return -ENODEV;