Messages in this thread Patch in this message |  | | From | stefani@seibold ... | Subject | [PATCH 2/2] fix kfifo_alloc() and kfifo_init() | Date | Tue, 8 Jan 2013 22:36:24 +0100 |
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From: Stefani Seibold <stefani@seibold.net>
This patch fix the kfifo_alloc() and kfifo_init() to alloc at least the requested number of elements. Since the kfifo operates on power of 2 the request size will be rounded up to the next power of two.
Signed-off-by: Stefani Seibold <stefani@seibold.net> --- lib/kfifo.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/lib/kfifo.c b/lib/kfifo.c index 59dcf5b..7b7f830 100644 --- a/lib/kfifo.c +++ b/lib/kfifo.c @@ -42,8 +42,7 @@ int __kfifo_alloc(struct __kfifo *fifo, unsigned int size, * round down to the next power of 2, since our 'let the indices * wrap' technique works only in this case. */ - if (!is_power_of_2(size)) - size = rounddown_pow_of_two(size); + size = roundup_pow_of_two(size); fifo->in = 0; fifo->out = 0; @@ -83,8 +82,7 @@ int __kfifo_init(struct __kfifo *fifo, void *buffer, { size /= esize; - if (!is_power_of_2(size)) - size = rounddown_pow_of_two(size); + size = roundup_pow_of_two(size); fifo->in = 0; fifo->out = 0; -- 1.8.0.2
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