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kfifo: Use "const" definitions
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Currently kfifo cannot be used by parts of the kernel that use "const"
properly as kfifo itself does not use const for passed data blocks which
are indeed const.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Alan Cox authored and Live-CD User committed Sep 19, 2009
1 parent 5342b77 commit f8a7c1a
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Showing 2 changed files with 3 additions and 3 deletions.
4 changes: 2 additions & 2 deletions include/linux/kfifo.h
Original file line number Diff line number Diff line change
Expand Up @@ -38,7 +38,7 @@ extern struct kfifo *kfifo_alloc(unsigned int size, gfp_t gfp_mask,
spinlock_t *lock);
extern void kfifo_free(struct kfifo *fifo);
extern unsigned int __kfifo_put(struct kfifo *fifo,
unsigned char *buffer, unsigned int len);
const unsigned char *buffer, unsigned int len);
extern unsigned int __kfifo_get(struct kfifo *fifo,
unsigned char *buffer, unsigned int len);

Expand Down Expand Up @@ -77,7 +77,7 @@ static inline void kfifo_reset(struct kfifo *fifo)
* bytes copied.
*/
static inline unsigned int kfifo_put(struct kfifo *fifo,
unsigned char *buffer, unsigned int len)
const unsigned char *buffer, unsigned int len)
{
unsigned long flags;
unsigned int ret;
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2 changes: 1 addition & 1 deletion kernel/kfifo.c
Original file line number Diff line number Diff line change
Expand Up @@ -117,7 +117,7 @@ EXPORT_SYMBOL(kfifo_free);
* writer, you don't need extra locking to use these functions.
*/
unsigned int __kfifo_put(struct kfifo *fifo,
unsigned char *buffer, unsigned int len)
const unsigned char *buffer, unsigned int len)
{
unsigned int l;

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