Selaa lähdekoodia

arm: rpi: perform XHCI firmware upload only once

XHCI firmware upload must be performed only once after initializing the
PCI bridge. This fixes USB stack initialization after calling "usb stop;
usb start" on Raspberry Pi 4B.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Nicolas Saenz Julienne <nsaenz@kernel.org>
Signed-off-by: Matthias Brugger <mbrugger@suse.com>
Marek Szyprowski 2 vuotta sitten
vanhempi
commit
33166054c7
1 muutettua tiedostoa jossa 6 lisäystä ja 0 poistoa
  1. 6 0
      arch/arm/mach-bcm283x/msg.c

+ 6 - 0
arch/arm/mach-bcm283x/msg.c

@@ -170,6 +170,12 @@ int bcm2711_notify_vl805_reset(void)
 	ALLOC_CACHE_ALIGN_BUFFER(struct msg_notify_vl805_reset,
 				 msg_notify_vl805_reset, 1);
 	int ret;
+	static int done = false;
+
+	if (done)
+		return 0;
+
+	done = true;
 
 	BCM2835_MBOX_INIT_HDR(msg_notify_vl805_reset);
 	BCM2835_MBOX_INIT_TAG(&msg_notify_vl805_reset->dev_addr,