linux-kernel - [PATCH v2] staging: keucr: check kmalloc() return value

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Date:	Sun, 19 Sep 2010 11:36:23 +0400
From:	Vasiliy Kulikov <segooon@...il.com>
To:	Greg KH <greg@...ah.com>
Cc:	kernel-janitors@...r.kernel.org,
	Greg Kroah-Hartman <gregkh@...e.de>, Al Cho <acho@...ell.com>,
	devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2] staging: keucr: check kmalloc() return value

kmalloc() may fail, if so return error code.

Signed-off-by: Vasiliy Kulikov <segooon@...il.com>
---
 Compile tested.

 drivers/staging/keucr/init.c   |    2 ++
 drivers/staging/keucr/msscsi.c |    4 ++++
 drivers/staging/keucr/smscsi.c |    4 ++++
 3 files changed, 10 insertions(+), 0 deletions(-)

diff --git a/drivers/staging/keucr/init.c b/drivers/staging/keucr/init.c
index 2ae129b..1934805 100644
--- a/drivers/staging/keucr/init.c
+++ b/drivers/staging/keucr/init.c
@@ -300,6 +300,8 @@ int ENE_LoadBinCode(struct us_data *us, BYTE flag)
 		return USB_STOR_TRANSPORT_GOOD;
 
 	buf = kmalloc(0x800, GFP_KERNEL);
+	if (buf == NULL)
+		return USB_STOR_TRANSPORT_ERROR;
 	switch ( flag )
 	{
 		// For SD
diff --git a/drivers/staging/keucr/msscsi.c b/drivers/staging/keucr/msscsi.c
index b908a23..ad0c5c6 100644
--- a/drivers/staging/keucr/msscsi.c
+++ b/drivers/staging/keucr/msscsi.c
@@ -168,6 +168,8 @@ int MS_SCSI_Read(struct us_data *us, struct scsi_cmnd *srb)
 		DWORD	blkno;
 
 		buf = kmalloc(blenByte, GFP_KERNEL);
+		if (buf == NULL)
+			return USB_STOR_TRANSPORT_ERROR;
 
 		result = ENE_LoadBinCode(us, MS_RW_PATTERN);
 		if (result != USB_STOR_XFER_GOOD)
@@ -271,6 +273,8 @@ int MS_SCSI_Write(struct us_data *us, struct scsi_cmnd *srb)
 		WORD	len, oldphy, newphy;
 
 		buf = kmalloc(blenByte, GFP_KERNEL);
+		if (buf == NULL)
+			return USB_STOR_TRANSPORT_ERROR;
 		usb_stor_set_xfer_buf(us, buf, blenByte, srb, FROM_XFER_BUF);
 
 		result = ENE_LoadBinCode(us, MS_RW_PATTERN);
diff --git a/drivers/staging/keucr/smscsi.c b/drivers/staging/keucr/smscsi.c
index 43e32c6..6211686 100644
--- a/drivers/staging/keucr/smscsi.c
+++ b/drivers/staging/keucr/smscsi.c
@@ -145,6 +145,8 @@ int SM_SCSI_Read(struct us_data *us, struct scsi_cmnd *srb)
 		return USB_STOR_TRANSPORT_ERROR;
 
 	buf = kmalloc(blenByte, GFP_KERNEL);
+	if (buf == NULL)
+		return USB_STOR_TRANSPORT_ERROR;
 	result = Media_D_ReadSector(us, bn, blen, buf);
 	usb_stor_set_xfer_buf(us, buf, blenByte, srb, TO_XFER_BUF);
 	kfree(buf);
@@ -175,6 +177,8 @@ int SM_SCSI_Write(struct us_data *us, struct scsi_cmnd *srb)
 		return USB_STOR_TRANSPORT_ERROR;
 
 	buf = kmalloc(blenByte, GFP_KERNEL);
+	if (buf == NULL)
+		return USB_STOR_TRANSPORT_ERROR;
 	usb_stor_set_xfer_buf(us, buf, blenByte, srb, FROM_XFER_BUF);
 	result = Media_D_CopySector(us, bn, blen, buf);
 	kfree(buf);
-- 
1.7.0.4

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