mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-22 15:02:32 +00:00
fce21ae4cc
Right now all brcm2708 patches are extracted from the non-mainline raspberrypi/linux git tree. Many of them are hacks and/or are unneeded in LEDE. Raspberry Pi is getting better and better mainline support so it would be nice to finally start maintaining patches in a cleaner way: 1) Backport patches accepted in upstream tree 2) Start using upstream drivers 3) Pick only these patches that are needed for more complete support Handling above tasks requires grouping patches - ideally using the same prefixes as generic ones. It means we should rename existing patches to use some high prefix. This will allow e.g. use 0xx for backported code. Signed-off-by: Rafał Miłecki <rafal@milecki.pl> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Acked-by: Stijn Tintel <stijn@linux-ipv6.be>
27 lines
884 B
Diff
27 lines
884 B
Diff
From 0badcb291f4fb5c3477c37b4ad4a0e27dd863272 Mon Sep 17 00:00:00 2001
|
|
From: Phil Elwell <phil@raspberrypi.org>
|
|
Date: Fri, 4 Dec 2015 17:41:50 +0000
|
|
Subject: [PATCH] irq-bcm2836: Prevent spurious interrupts, and trap them early
|
|
|
|
The old arch-specific IRQ macros included a dsb to ensure the
|
|
write to clear the mailbox interrupt completed before returning
|
|
from the interrupt. The BCM2836 irqchip driver needs the same
|
|
precaution to avoid spurious interrupts.
|
|
|
|
Spurious interrupts are still possible for other reasons,
|
|
though, so trap them early.
|
|
---
|
|
drivers/irqchip/irq-bcm2836.c | 1 +
|
|
1 file changed, 1 insertion(+)
|
|
|
|
--- a/drivers/irqchip/irq-bcm2836.c
|
|
+++ b/drivers/irqchip/irq-bcm2836.c
|
|
@@ -175,6 +175,7 @@ __exception_irq_entry bcm2836_arm_irqchi
|
|
u32 ipi = ffs(mbox_val) - 1;
|
|
|
|
writel(1 << ipi, mailbox0);
|
|
+ dsb(sy);
|
|
handle_IPI(ipi, regs);
|
|
#endif
|
|
} else if (stat) {
|