summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorOlof Johansson <olof@lixom.net>2013-06-07 18:19:30 -0700
committerOlof Johansson <olof@lixom.net>2013-06-07 18:19:40 -0700
commit090878aa951628143f40a1acc19ec074a5ae9200 (patch)
tree9bfd6aa1a24e6bd3e9a7db614c772cc86c905e3d
parent3d0d8b9155b2a60e3d2498e7d928051043d2d546 (diff)
parentb5f83e9b069f4bf19214ca6130947806a2b853fa (diff)
downloadlinux-090878aa951628143f40a1acc19ec074a5ae9200.tar.gz
linux-090878aa951628143f40a1acc19ec074a5ae9200.tar.xz
Merge tag 'mxs-fixes-3.10' of git://git.linaro.org/people/shawnguo/linux-2.6 into fixes
From Shawn Guo, mxs fixes for 3.10: - Since the time we move to MULTI_IRQ_HANDLER, the 0x7f polling for no interrupt in icoll_handle_irq() becomes insane, because 0x7f is an valid interrupt number, the irq of gpio bank 0. That unnecessary polling results in the driver not detecting when irq 0x7f is active which makes the machine effectively dead lock. The fix removes the interrupt poll loop and allows usage of gpio0 interrupt without an infinite loop. * tag 'mxs-fixes-3.10' of git://git.linaro.org/people/shawnguo/linux-2.6: ARM: mxs: icoll: Fix interrupts gpio bank 0 Signed-off-by: Olof Johansson <olof@lixom.net>
-rw-r--r--drivers/irqchip/irq-mxs.c14
1 files changed, 4 insertions, 10 deletions
diff --git a/drivers/irqchip/irq-mxs.c b/drivers/irqchip/irq-mxs.c
index 29889bb..63b3d4e 100644
--- a/drivers/irqchip/irq-mxs.c
+++ b/drivers/irqchip/irq-mxs.c
@@ -76,16 +76,10 @@ asmlinkage void __exception_irq_entry icoll_handle_irq(struct pt_regs *regs)
{
u32 irqnr;
- do {
- irqnr = __raw_readl(icoll_base + HW_ICOLL_STAT_OFFSET);
- if (irqnr != 0x7f) {
- __raw_writel(irqnr, icoll_base + HW_ICOLL_VECTOR);
- irqnr = irq_find_mapping(icoll_domain, irqnr);
- handle_IRQ(irqnr, regs);
- continue;
- }
- break;
- } while (1);
+ irqnr = __raw_readl(icoll_base + HW_ICOLL_STAT_OFFSET);
+ __raw_writel(irqnr, icoll_base + HW_ICOLL_VECTOR);
+ irqnr = irq_find_mapping(icoll_domain, irqnr);
+ handle_IRQ(irqnr, regs);
}
static int icoll_irq_domain_map(struct irq_domain *d, unsigned int virq,