From: Manuel Pégourié-Gonnard <mpg@elzevir.fr>
Date: Tue, 29 Dec 2015 11:32:20 +0000 (+0100)
Subject: staging: mt29f: fix unchecked malloc()
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=e5b3ecebdf153509118ab1de6b3707a9889c300d;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

staging: mt29f: fix unchecked malloc()

The pointer is unconditionally dereferenced a few lines later, we need to make
sure it isn't NULL.

Signed-off-by: Manuel Pégourié-Gonnard <mpg@elzevir.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/staging/mt29f_spinand/mt29f_spinand.c b/drivers/staging/mt29f_spinand/mt29f_spinand.c
index 197d1124733d..983371b52ed4 100644
--- a/drivers/staging/mt29f_spinand/mt29f_spinand.c
+++ b/drivers/staging/mt29f_spinand/mt29f_spinand.c
@@ -483,8 +483,11 @@ static int spinand_program_page(struct spi_device *spi_nand,
 #ifdef CONFIG_MTD_SPINAND_ONDIEECC
 	unsigned int i, j;
 
-	enable_read_hw_ecc = 0;
 	wbuf = devm_kzalloc(&spi_nand->dev, CACHE_BUF, GFP_KERNEL);
+	if (!wbuf)
+		return -ENOMEM;
+
+	enable_read_hw_ecc = 0;
 	spinand_read_page(spi_nand, page_id, 0, CACHE_BUF, wbuf);
 
 	for (i = offset, j = 0; i < len; i++, j++)