From: Chaehyun Lim <chaehyun.lim@gmail.com>
Date: Thu, 17 Sep 2015 07:48:45 +0000 (+0900)
Subject: staging: wilc1000: linux_wlan_spi.c: fix kzalloc error check
X-Git-Tag: KARO-TX6UL-2015-11-03~34^2~1892
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=a0e5facedb4a1c7892a6f6f7a749eaf9b23fbbe1;p=karo-tx-linux.git

staging: wilc1000: linux_wlan_spi.c: fix kzalloc error check

This patch fixes error check of kzalloc.
If kzalloc is failed, return type is used as -ENOMEM.

Signed-off-by: Chaehyun Lim <chaehyun.lim@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/staging/wilc1000/linux_wlan_spi.c b/drivers/staging/wilc1000/linux_wlan_spi.c
index 3e2425647018..51bbd969e96b 100644
--- a/drivers/staging/wilc1000/linux_wlan_spi.c
+++ b/drivers/staging/wilc1000/linux_wlan_spi.c
@@ -125,10 +125,8 @@ int linux_spi_write(u8 *b, u32 len)
 		int remainder = len % TXRX_PHASE_SIZE;
 
 		char *r_buffer = kzalloc(TXRX_PHASE_SIZE, GFP_KERNEL);
-
-		if (!r_buffer) {
-			PRINT_ER("Failed to allocate memory for r_buffer\n");
-		}
+		if (!r_buffer)
+			return -ENOMEM;
 
 		if (blk) {
 			while (i < blk)	{
@@ -208,10 +206,9 @@ int linux_spi_write(u8 *b, u32 len)
 			.delay_usecs = 0,
 		};
 		char *r_buffer = kzalloc(len, GFP_KERNEL);
+		if (!r_buffer)
+			return -ENOMEM;
 
-		if (!r_buffer) {
-			PRINT_ER("Failed to allocate memory for r_buffer\n");
-		}
 		tr.rx_buf = r_buffer;
 		PRINT_D(BUS_DBG, "Request writing %d bytes\n", len);
 
@@ -257,10 +254,8 @@ int linux_spi_read(unsigned char *rb, unsigned long rlen)
 		int remainder = rlen % TXRX_PHASE_SIZE;
 
 		char *t_buffer = kzalloc(TXRX_PHASE_SIZE, GFP_KERNEL);
-
-		if (!t_buffer) {
-			PRINT_ER("Failed to allocate memory for t_buffer\n");
-		}
+		if (!t_buffer)
+			return -ENOMEM;
 
 		if (blk) {
 			while (i < blk)	{
@@ -337,10 +332,9 @@ int linux_spi_read(unsigned char *rb, unsigned long rlen)
 
 		};
 		char *t_buffer = kzalloc(rlen, GFP_KERNEL);
+		if (!t_buffer)
+			return -ENOMEM;
 
-		if (!t_buffer) {
-			PRINT_ER("Failed to allocate memory for t_buffer\n");
-		}
 		tr.tx_buf = t_buffer;
 
 		memset(&msg, 0, sizeof(msg));