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Subject[PATCH 2/2] fix kfifo_alloc() and kfifo_init()
Date
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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