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authorLinus Walleij <linus.walleij@stericsson.com>2011-05-31 12:14:39 -0400
committerThomas Gleixner <tglx@linutronix.de>2011-06-03 08:53:16 -0400
commite7fbad300a7a6432238f086e3c9a61538a905858 (patch)
tree76841c453717fd32be49d7d2b06e835e15b87c99 /kernel
parent3a43e05f4d0600e906fa09f4a65d749288c44592 (diff)
genirq: Fix descriptor init on non-sparse IRQs
The genirq changes are initializing descriptors for sparse IRQs quite differently from how non-sparse (stacked?) IRQs are initialized, with the effect that on my platform all IRQs are default-disabled on sparse IRQs and default-enabled if non-sparse IRQs are used, crashing some GPIO driver. Fix this by refactoring the non-sparse IRQs to use the same descriptor init function as the sparse IRQs. Signed-off: Linus Walleij <linus.walleij@linaro.org> Link: http://lkml.kernel.org/r/1306858479-16622-1-git-send-email-linus.walleij@stericsson.com Cc: stable@kernel.org # 2.6.39 Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/irq/irqdesc.c8
1 files changed, 3 insertions, 5 deletions
diff --git a/kernel/irq/irqdesc.c b/kernel/irq/irqdesc.c
index 886e80347b32..c7ddc87d6c87 100644
--- a/kernel/irq/irqdesc.c
+++ b/kernel/irq/irqdesc.c
@@ -257,13 +257,11 @@ int __init early_irq_init(void)
257 count = ARRAY_SIZE(irq_desc); 257 count = ARRAY_SIZE(irq_desc);
258 258
259 for (i = 0; i < count; i++) { 259 for (i = 0; i < count; i++) {
260 desc[i].irq_data.irq = i;
261 desc[i].irq_data.chip = &no_irq_chip;
262 desc[i].kstat_irqs = alloc_percpu(unsigned int); 260 desc[i].kstat_irqs = alloc_percpu(unsigned int);
263 irq_settings_clr_and_set(desc, ~0, _IRQ_DEFAULT_INIT_FLAGS); 261 alloc_masks(&desc[i], GFP_KERNEL, node);
264 alloc_masks(desc + i, GFP_KERNEL, node); 262 raw_spin_lock_init(&desc[i].lock);
265 desc_smp_init(desc + i, node);
266 lockdep_set_class(&desc[i].lock, &irq_desc_lock_class); 263 lockdep_set_class(&desc[i].lock, &irq_desc_lock_class);
264 desc_set_defaults(i, &desc[i], node);
267 } 265 }
268 return arch_early_irq_init(); 266 return arch_early_irq_init();
269} 267}