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| author | Linus Walleij <linus.walleij@stericsson.com> | 2011-05-31 18:14:39 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2011-06-03 14:53:16 +0200 |
| commit | e7fbad300a7a6432238f086e3c9a61538a905858 (patch) | |
| tree | 76841c453717fd32be49d7d2b06e835e15b87c99 /kernel | |
| parent | 3a43e05f4d0600e906fa09f4a65d749288c44592 (diff) | |
| download | linux-stable-e7fbad300a7a6432238f086e3c9a61538a905858.tar.gz linux-stable-e7fbad300a7a6432238f086e3c9a61538a905858.tar.bz2 linux-stable-e7fbad300a7a6432238f086e3c9a61538a905858.zip | |
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.c | 8 |
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) count = ARRAY_SIZE(irq_desc); for (i = 0; i < count; i++) { - desc[i].irq_data.irq = i; - desc[i].irq_data.chip = &no_irq_chip; desc[i].kstat_irqs = alloc_percpu(unsigned int); - irq_settings_clr_and_set(desc, ~0, _IRQ_DEFAULT_INIT_FLAGS); - alloc_masks(desc + i, GFP_KERNEL, node); - desc_smp_init(desc + i, node); + alloc_masks(&desc[i], GFP_KERNEL, node); + raw_spin_lock_init(&desc[i].lock); lockdep_set_class(&desc[i].lock, &irq_desc_lock_class); + desc_set_defaults(i, &desc[i], node); } return arch_early_irq_init(); } |