Staging: asus_oled: Add NULL test for kmalloc

This patch adds a NULL test to check wether kmalloc was successful or
not.

Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/staging/asus_oled/asus_oled.c b/drivers/staging/asus_oled/asus_oled.c
index 0c1fb0d..c597fb2 100644 (file)
--- a/drivers/staging/asus_oled/asus_oled.c
+++ b/drivers/staging/asus_oled/asus_oled.c
@@ -430,6 +430,11 @@ static ssize_t odev_set_picture(struct asus_oled_dev *odev,
 
                kfree(odev->buf);
                odev->buf = kmalloc(odev->buf_size, GFP_KERNEL);
+               if (odev->buf == NULL) {
+                       odev->buf_size = 0;
+                       printk(ASUS_OLED_ERROR "Out of memory!\n");
+                       return -ENOMEM;
+               }
 
                memset(odev->buf, 0xff, odev->buf_size);