diff options
Diffstat (limited to 'target/linux/brcm63xx/patches-3.10/324-MIPS-BCM63XX-protect-irq-register-accesses.patch')
| -rw-r--r-- | target/linux/brcm63xx/patches-3.10/324-MIPS-BCM63XX-protect-irq-register-accesses.patch | 22 |
1 files changed, 13 insertions, 9 deletions
diff --git a/target/linux/brcm63xx/patches-3.10/324-MIPS-BCM63XX-protect-irq-register-accesses.patch b/target/linux/brcm63xx/patches-3.10/324-MIPS-BCM63XX-protect-irq-register-accesses.patch index c38137dc81..18669a1aac 100644 --- a/target/linux/brcm63xx/patches-3.10/324-MIPS-BCM63XX-protect-irq-register-accesses.patch +++ b/target/linux/brcm63xx/patches-3.10/324-MIPS-BCM63XX-protect-irq-register-accesses.patch @@ -1,8 +1,12 @@ -From 85257b702e1d4c6dcc839c737833c42ca53bae93 Mon Sep 17 00:00:00 2001 +From 5e86f3988854c62c0788e4820caf722fec7c791b Mon Sep 17 00:00:00 2001 From: Jonas Gorski <jogo@openwrt.org> Date: Sun, 21 Apr 2013 15:38:56 +0200 -Subject: [PATCH 35/53] MIPS: BCM63XX: protect irq register accesses +Subject: [PATCH 07/10] MIPS: BCM63XX: protect irq register accesses +Since we will have the chance of accessing the registers concurrently, +protect any accesses through a spinlock. + +Signed-off-by: Jonas Gorski <jogo@openwrt.org> --- arch/mips/bcm63xx/irq.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) @@ -26,11 +30,11 @@ Subject: [PATCH 35/53] MIPS: BCM63XX: protect irq register accesses + static u32 irq_stat_addr[2]; static u32 irq_mask_addr[2]; - static void (*dispatch_internal)(int pin); -@@ -62,8 +66,10 @@ void __dispatch_internal_##width(int pin + static void (*dispatch_internal)(int cpu); +@@ -62,8 +66,10 @@ void __dispatch_internal_##width(int cpu bool irqs_pending = false; \ - static int i[2]; \ - int *next = &i[pin]; \ + static unsigned int i[2]; \ + unsigned int *next = &i[cpu]; \ + unsigned long flags; \ \ /* read registers in reverse order */ \ @@ -38,7 +42,7 @@ Subject: [PATCH 35/53] MIPS: BCM63XX: protect irq register accesses for (src = 0, tgt = (width / 32); src < (width / 32); src++) { \ u32 val; \ \ -@@ -74,6 +80,7 @@ void __dispatch_internal_##width(int pin +@@ -74,6 +80,7 @@ void __dispatch_internal_##width(int cpu if (val) \ irqs_pending = true; \ } \ @@ -63,12 +67,12 @@ Subject: [PATCH 35/53] MIPS: BCM63XX: protect irq register accesses @@ -105,10 +115,13 @@ static void __internal_irq_unmask_##widt u32 val; \ unsigned reg = (irq / 32) ^ (width/32 - 1); \ - unsigned bit = irq & 0x1f; \ + unsigned bit = irq & 0x1f; \ + unsigned long flags; \ \ + spin_lock_irqsave(&ipic_lock, flags); \ val = bcm_readl(irq_mask_addr[0] + reg * sizeof(u32)); \ - val |= (1 << bit); \ + val |= (1 << bit); \ bcm_writel(val, irq_mask_addr[0] + reg * sizeof(u32)); \ + spin_unlock_irqrestore(&ipic_lock, flags); \ } |