diff options
| author | David Daney <ddaney@caviumnetworks.com> | 2011-03-25 12:38:48 -0700 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2011-03-27 17:45:58 +0200 |
| commit | d72274e5895d11570a0a4a3214a1933c86d5ccb7 (patch) | |
| tree | 3925786563e67241cc5798ebbbcf79c0ce738f69 /kernel/irq/chip.c | |
| parent | 16c29dafcc86024048f1dbb8349d31cb22c7c55a (diff) | |
| download | lwn-d72274e5895d11570a0a4a3214a1933c86d5ccb7.tar.gz lwn-d72274e5895d11570a0a4a3214a1933c86d5ccb7.zip | |
genirq: Reserve the irq when calling irq_set_chip()
The helper macros and functions like for_each_active_irq() don't work
unless the irq is in the allocated_irqs set.
In the case of !CONFIG_SPARSE_IRQ, instead of forcing all users of the
irq infrastructure to explicitly call irq_reserve_irq(), do it for
them.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Cc: linux-mips@linux-mips.org
Cc: ralf@linux-mips.org
LKML-Reference: <1301081931-11240-2-git-send-email-ddaney@caviumnetworks.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'kernel/irq/chip.c')
| -rw-r--r-- | kernel/irq/chip.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c index c9c0601f0615..c35d74c08b50 100644 --- a/kernel/irq/chip.c +++ b/kernel/irq/chip.c @@ -37,6 +37,12 @@ int irq_set_chip(unsigned int irq, struct irq_chip *chip) irq_chip_set_defaults(chip); desc->irq_data.chip = chip; irq_put_desc_unlock(desc, flags); + /* + * For !CONFIG_SPARSE_IRQ make the irq show up in + * allocated_irqs. For the CONFIG_SPARSE_IRQ case, it is + * already marked, and this call is harmless. + */ + irq_reserve_irq(irq); return 0; } EXPORT_SYMBOL(irq_set_chip); |