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| author | Joe Perches <joe@perches.com> | 2015-05-20 05:44:54 -0700 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2015-05-26 16:46:52 +0200 |
| commit | 884e7e5e7d1a35b944436895852d5ed24e79d42e (patch) | |
| tree | 69c2f68813eaf7c8815ad5c1dbffc2faacddca2a /arch/mips | |
| parent | 70f041b6e1ff508750988ffd034ac6117d34d4d7 (diff) | |
| download | linux-884e7e5e7d1a35b944436895852d5ed24e79d42e.tar.bz2 | |
MIPS: irq: Use DECLARE_BITMAP
Use the generic mechanism to declare a bitmap instead of unsigned long.
This could fix an overwrite defect of whatever follows irq_map.
Not all "#define NR_IRQS <value>" are a multiple of BITS_PER_LONG so
using DECLARE_BITMAP allocates the proper number of longs required
for the possible bits.
For instance:
arch/mips/include/asm/mach-ath79/irq.h:#define NR_IRQS 51
arch/mips/include/asm/mach-db1x00/irq.h:#define NR_IRQS 152
arch/mips/include/asm/mach-lantiq/falcon/irq.h:#define NR_IRQS 328
Signed-off-by: Joe Perches <joe@perches.com>
Cc: linux-mips <linux-mips@linux-mips.org>
Cc: LKML <linux-kernel@vger.kernel.org>
Cc: Gabor Juhos <juhosg@openwrt.org>
Cc: Manuel Lauss <manuel.lauss@googlemail.com>
Cc: John Crispin <blogic@openwrt.org>
Patchwork: https://patchwork.linux-mips.org/patch/10091/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips')
| -rw-r--r-- | arch/mips/kernel/irq.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/mips/kernel/irq.c b/arch/mips/kernel/irq.c index d2bfbc2e8995..51f57d841662 100644 --- a/arch/mips/kernel/irq.c +++ b/arch/mips/kernel/irq.c @@ -29,7 +29,7 @@ int kgdb_early_setup; #endif -static unsigned long irq_map[NR_IRQS / BITS_PER_LONG]; +static DECLARE_BITMAP(irq_map, NR_IRQS); int allocate_irqno(void) { |