linux-kernel - [PATCH 3/3] kfifo: Don't use integer as NULL pointer

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Date:	Wed, 27 Jan 2010 17:09:38 +0300
From:	Anton Vorontsov <avorontsov@...mvista.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Greg Kroah-Hartman <gregkh@...e.de>,
	Josh Boyer <jwboyer@...il.com>,
	Stefani Seibold <stefani@...bold.net>, linuxppc-dev@...abs.org,
	linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org
Subject: [PATCH 3/3] kfifo: Don't use integer as NULL pointer

This patch fixes following sparse warnings:

include/linux/kfifo.h:127:25: warning: Using plain integer as NULL pointer
kernel/kfifo.c:83:21: warning: Using plain integer as NULL pointer

Signed-off-by: Anton Vorontsov <avorontsov@...mvista.com>
---
 include/linux/kfifo.h |    2 +-
 kernel/kfifo.c        |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/linux/kfifo.h b/include/linux/kfifo.h
index 6f6c5f3..bc0fc79 100644
--- a/include/linux/kfifo.h
+++ b/include/linux/kfifo.h
@@ -124,7 +124,7 @@ extern __must_check unsigned int kfifo_out_peek(struct kfifo *fifo,
  */
 static inline bool kfifo_initialized(struct kfifo *fifo)
 {
-	return fifo->buffer != 0;
+	return fifo->buffer != NULL;
 }
 
 /**
diff --git a/kernel/kfifo.c b/kernel/kfifo.c
index 3b00bf8..6d58e1a 100644
--- a/kernel/kfifo.c
+++ b/kernel/kfifo.c
@@ -80,7 +80,7 @@ int kfifo_alloc(struct kfifo *fifo, unsigned int size, gfp_t gfp_mask)
 
 	buffer = kmalloc(size, gfp_mask);
 	if (!buffer) {
-		_kfifo_init(fifo, 0, 0);
+		_kfifo_init(fifo, NULL, 0);
 		return -ENOMEM;
 	}
 
-- 
1.6.5.7
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