X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=include%2Flinux%2Fkfifo.h;h=ad6bdf5a5970c5fdbceb6b5c440a196b7a620b22;hb=f653398c86a1c104f0992bd788dd4bb065449be4;hp=48eccd865bd8add9d9353f13771eab89745f0000;hpb=dd0fc66fb33cd610bc1a5db8a5e232d34879b4d7;p=safe%2Fjmp%2Flinux-2.6

diff --git a/include/linux/kfifo.h b/include/linux/kfifo.h
index 48eccd8..ad6bdf5 100644
--- a/include/linux/kfifo.h
+++ b/include/linux/kfifo.h
@@ -21,8 +21,6 @@
 #ifndef _LINUX_KFIFO_H
 #define _LINUX_KFIFO_H
 
-#ifdef __KERNEL__
-
 #include <linux/kernel.h>
 #include <linux/spinlock.h>
 
@@ -40,7 +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);
 
@@ -74,12 +72,12 @@ static inline void kfifo_reset(struct kfifo *fifo)
  * @buffer: the data to be added.
  * @len: the length of the data to be added.
  *
- * This function copies at most 'len' bytes from the 'buffer' into
+ * This function copies at most @len bytes from the @buffer into
  * the FIFO depending on the free space, and returns the number of
  * 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;
@@ -99,8 +97,8 @@ static inline unsigned int kfifo_put(struct kfifo *fifo,
  * @buffer: where the data must be copied.
  * @len: the size of the destination buffer.
  *
- * This function copies at most 'len' bytes from the FIFO into the
- * 'buffer' and returns the number of copied bytes.
+ * This function copies at most @len bytes from the FIFO into the
+ * @buffer and returns the number of copied bytes.
  */
 static inline unsigned int kfifo_get(struct kfifo *fifo,
 				     unsigned char *buffer, unsigned int len)
@@ -151,7 +149,4 @@ static inline unsigned int kfifo_len(struct kfifo *fifo)
 	return ret;
 }
 
-#else
-#warning "don't include kernel headers in userspace"
-#endif /* __KERNEL__ */
 #endif