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| author | Rafał Miłecki <rafal@milecki.pl> | 2017-03-22 21:09:00 +0100 |
|---|---|---|
| committer | Rafał Miłecki <rafal@milecki.pl> | 2017-03-24 08:06:35 +0100 |
| commit | fce21ae4ccfcee0c28fb18f5507e145fb0b02dec (patch) | |
| tree | 6c29b7c1f65945991d0cae13af012e6c14adc713 /target/linux/brcm2708/patches-4.9/950-0006-irq-bcm2836-Prevent-spurious-interrupts-and-trap-the.patch | |
| parent | 46e390322a58bdc632ee43fdf9d14115dac26e7a (diff) | |
| download | upstream-fce21ae4ccfcee0c28fb18f5507e145fb0b02dec.tar.gz upstream-fce21ae4ccfcee0c28fb18f5507e145fb0b02dec.tar.bz2 upstream-fce21ae4ccfcee0c28fb18f5507e145fb0b02dec.zip | |
brcm2708: rename all patches from raspberrypi git tree to use 950 prefix
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>
Diffstat (limited to 'target/linux/brcm2708/patches-4.9/950-0006-irq-bcm2836-Prevent-spurious-interrupts-and-trap-the.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.9/950-0006-irq-bcm2836-Prevent-spurious-interrupts-and-trap-the.patch | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.9/950-0006-irq-bcm2836-Prevent-spurious-interrupts-and-trap-the.patch b/target/linux/brcm2708/patches-4.9/950-0006-irq-bcm2836-Prevent-spurious-interrupts-and-trap-the.patch new file mode 100644 index 0000000000..5f5bd83600 --- /dev/null +++ b/target/linux/brcm2708/patches-4.9/950-0006-irq-bcm2836-Prevent-spurious-interrupts-and-trap-the.patch @@ -0,0 +1,26 @@ +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) { |