From f3c869caef648c541a7445f2a6ba2196d343f542 Mon Sep 17 00:00:00 2001 From: Paul Gortmaker Date: Sun, 21 Feb 2021 03:08:24 -0500 Subject: lib: bitmap: move ERANGE check from set_region to check_region It makes sense to do all the checks in check_region() and not 1/2 in check_region and 1/2 in set_region. Since set_region is called immediately after check_region, the net effect on runtime is zero, but it gets rid of an if (...) return... Cc: Yury Norov Cc: Rasmus Villemoes Cc: Andy Shevchenko Acked-by: Yury Norov Reviewed-by: Andy Shevchenko Signed-off-by: Paul Gortmaker Signed-off-by: Paul E. McKenney --- lib/bitmap.c | 14 +++++--------- 1 file changed, 5 insertions(+), 9 deletions(-) (limited to 'lib/bitmap.c') diff --git a/lib/bitmap.c b/lib/bitmap.c index 162e2850c622..833f152a2c43 100644 --- a/lib/bitmap.c +++ b/lib/bitmap.c @@ -500,17 +500,12 @@ struct region { unsigned int nbits; }; -static int bitmap_set_region(const struct region *r, unsigned long *bitmap) +static void bitmap_set_region(const struct region *r, unsigned long *bitmap) { unsigned int start; - if (r->end >= r->nbits) - return -ERANGE; - for (start = r->start; start <= r->end; start += r->group_len) bitmap_set(bitmap, start, min(r->end - start + 1, r->off)); - - return 0; } static int bitmap_check_region(const struct region *r) @@ -518,6 +513,9 @@ static int bitmap_check_region(const struct region *r) if (r->start > r->end || r->group_len == 0 || r->off > r->group_len) return -EINVAL; + if (r->end >= r->nbits) + return -ERANGE; + return 0; } @@ -656,9 +654,7 @@ int bitmap_parselist(const char *buf, unsigned long *maskp, int nmaskbits) if (ret) return ret; - ret = bitmap_set_region(&r, maskp); - if (ret) - return ret; + bitmap_set_region(&r, maskp); } return 0; -- cgit