diff options
| author | Marek Szyprowski | 2021-09-17 10:19:43 +0200 |
|---|---|---|
| committer | Matthias Brugger | 2021-09-29 15:44:16 +0200 |
| commit | 33166054c72716e46d492a0588f00900a9684a97 (patch) | |
| tree | 4064e68bbfe1d2337d417658b5478108895f0723 | |
| parent | 6f3a9227cc79009e125006890829496ce00726ea (diff) | |
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>
| -rw-r--r-- | arch/arm/mach-bcm283x/msg.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/arm/mach-bcm283x/msg.c b/arch/arm/mach-bcm283x/msg.c index 347aece3cd8..345f7fe2b77 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, |