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authorDavid S. Miller <davem@davemloft.net>2012-04-26 20:00:35 -0700
committerDavid S. Miller <davem@davemloft.net>2012-04-26 20:00:35 -0700
commit8fe5f56c8a203a7a83d1b621c369655d914f3752 (patch)
treeec865efb2d577d1e536720a28ae18b10bdbfd973 /arch/arm/common/vic.c
parentdf2e7f525d88da992021b589d8a412afc15de36c (diff)
parent82b769063598d01a8b24abf250a53f8b437e09f1 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux
Conflicts: arch/sparc/kernel/leon_smp.c Merge mainline to get the nobootmem.c bug fix, for the sake of the sparc64 NO_BOOTMEM conversion. Resolve a small include line conflict in leon_smp.c Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/arm/common/vic.c')
-rw-r--r--arch/arm/common/vic.c9
1 files changed, 4 insertions, 5 deletions
diff --git a/arch/arm/common/vic.c b/arch/arm/common/vic.c
index 7a66311f3066..7e288f96cedf 100644
--- a/arch/arm/common/vic.c
+++ b/arch/arm/common/vic.c
@@ -427,19 +427,18 @@ int __init vic_of_init(struct device_node *node, struct device_node *parent)
/*
* Handle each interrupt in a single VIC. Returns non-zero if we've
- * handled at least one interrupt. This does a single read of the
- * status register and handles all interrupts in order from LSB first.
+ * handled at least one interrupt. This reads the status register
+ * before handling each interrupt, which is necessary given that
+ * handle_IRQ may briefly re-enable interrupts for soft IRQ handling.
*/
static int handle_one_vic(struct vic_device *vic, struct pt_regs *regs)
{
u32 stat, irq;
int handled = 0;
- stat = readl_relaxed(vic->base + VIC_IRQ_STATUS);
- while (stat) {
+ while ((stat = readl_relaxed(vic->base + VIC_IRQ_STATUS))) {
irq = ffs(stat) - 1;
handle_IRQ(irq_find_mapping(vic->domain, irq), regs);
- stat &= ~(1 << irq);
handled = 1;
}