From: Ravindran, Madhusudhanan (M.) <mravindr@visteon.com>
Date: Mon, 16 Mar 2015 15:36:41 +0000 (+0000)
Subject: staging: fbtft: Fix potential null dereference
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=6a938a8cef9abad2ae13e6a48329f5119930b0d6;p=deliverable%2Flinux.git

staging: fbtft: Fix potential null dereference

This error is found by smatch tool.

Signed-off-by: Madhusudhanan Ravindran <mravindr@visteon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/staging/fbtft/fb_agm1264k-fl.c b/drivers/staging/fbtft/fb_agm1264k-fl.c
index 578fdbe352d1..939b7b963043 100644
--- a/drivers/staging/fbtft/fb_agm1264k-fl.c
+++ b/drivers/staging/fbtft/fb_agm1264k-fl.c
@@ -282,6 +282,9 @@ static int write_vmem(struct fbtft_par *par, size_t offset, size_t len)
 	signed short *convert_buf = kmalloc(par->info->var.xres *
 		par->info->var.yres * sizeof(signed short), GFP_NOIO);
 
+	if (!convert_buf)
+		return -ENOMEM;
+
 	fbtft_par_dbg(DEBUG_WRITE_VMEM, par, "%s()\n", __func__);
 
 	/* converting to grayscale16 */