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| author | Yury Norov <ynorov@nvidia.com> | 2026-07-08 22:03:08 -0400 |
|---|---|---|
| committer | Yury Norov <ynorov@nvidia.com> | 2026-07-22 15:38:38 -0400 |
| commit | 6abf50fde2da0f8146fde313ae567277e562f1f9 (patch) | |
| tree | 1173bc02724aa081511645816ada4faed7acde97 /arch/powerpc/sysdev | |
| parent | d00e89988e0192b3a1e413ec095e1699e5d23f2b (diff) | |
| download | linux-6abf50fde2da0f8146fde313ae567277e562f1f9.tar.gz linux-6abf50fde2da0f8146fde313ae567277e562f1f9.zip | |
powerpc/msi: Treat bitmap size as allocation failure
bitmap_find_next_zero_area() uses an out-of-range return value to
indicate failure. Check for values greater than or equal to the bitmap
size so the caller does not depend on the exact failure sentinel.
Acked-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Signed-off-by: Yury Norov <ynorov@nvidia.com>
Diffstat (limited to 'arch/powerpc/sysdev')
| -rw-r--r-- | arch/powerpc/sysdev/msi_bitmap.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/sysdev/msi_bitmap.c b/arch/powerpc/sysdev/msi_bitmap.c index 456a4f64ae0a..2f38d4b41ad3 100644 --- a/arch/powerpc/sysdev/msi_bitmap.c +++ b/arch/powerpc/sysdev/msi_bitmap.c @@ -21,7 +21,7 @@ int msi_bitmap_alloc_hwirqs(struct msi_bitmap *bmp, int num) offset = bitmap_find_next_zero_area(bmp->bitmap, bmp->irq_count, 0, num, (1 << order) - 1); - if (offset > bmp->irq_count) + if (offset >= bmp->irq_count) goto err; bitmap_set(bmp->bitmap, offset, num); |