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Subject[PATCH 2/2] Add "const" attribute to kfifo input buffer pointers
Change the input buffer arguments for kfifo_put() and __kfifo_put() to have
the "const" attribute.

Signed-off-by: David VomLehn
diff --git a/include/linux/kfifo.h b/include/linux/kfifo.h
index 29f62e1..38d4578 100644
--- a/include/linux/kfifo.h
+++ b/include/linux/kfifo.h
@@ -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);

@@ -77,7 +77,8 @@ 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;
diff --git a/kernel/kfifo.c b/kernel/kfifo.c
index 26539e3..1082952 100644
--- a/kernel/kfifo.c
+++ b/kernel/kfifo.c
@@ -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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