lkml.org 
[lkml]   [2009]   [Jun]   [25]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH] kfifo: Use "const" definitions
Date
From: Alan Cox <alan@linux.intel.com>

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>
---

include/linux/kfifo.h | 4 ++--
kernel/kfifo.c | 2 +-
2 files changed, 3 insertions(+), 3 deletions(-)


diff --git a/include/linux/kfifo.h b/include/linux/kfifo.h
index 29f62e1..ad6bdf5 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 +77,7 @@ 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;
diff --git a/kernel/kfifo.c b/kernel/kfifo.c
index 26539e3..3765ff3 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;



\
 
 \ /
  Last update: 2009-06-25 15:39    [W:0.024 / U:0.276 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site