On 17/09/2021 10:42, Matthias Brugger wrote:
On 17/09/2021 10:19, Marek Szyprowski wrote:
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.szyprow...@samsung.com>
Looks good to me. I'll wait a bit more to see if Nicolas can do a review as well
before queuing it.
There was a race condition, I'll queque it now :)
Regards,
Matthias
---
arch/arm/mach-bcm283x/msg.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/arch/arm/mach-bcm283x/msg.c b/arch/arm/mach-bcm283x/msg.c
index 347aece3cd..345f7fe2b7 100644
--- a/arch/arm/mach-bcm283x/msg.c
+++ b/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,
