[PATCH v2 1/2] mtd: rawnand: meson: add missing ENOMEM check in meson_nfc_read_buf()

From: Martin Blumenstingl
Date: Mon Mar 18 2019 - 16:47:39 EST

kzalloc() can return NULL if memory could not be allocated. Check the
return value of the kzalloc() call in meson_nfc_read_buf() to make it
consistent with other memory allocations within the meson_nand driver.

Fixes: 8fae856c53500a ("mtd: rawnand: meson: add support for Amlogic NAND flash controller")
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@xxxxxxxxxxxxxx>
Acked-by: Liang Yang <liang.yang@xxxxxxxxxxx>
drivers/mtd/nand/raw/meson_nand.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/drivers/mtd/nand/raw/meson_nand.c b/drivers/mtd/nand/raw/meson_nand.c
index 3e8aa71407b5..a1d8506b61c7 100644
--- a/drivers/mtd/nand/raw/meson_nand.c
+++ b/drivers/mtd/nand/raw/meson_nand.c
@@ -528,6 +528,9 @@ static int meson_nfc_read_buf(struct nand_chip *nand, u8 *buf, int len)
u8 *info;

info = kzalloc(PER_INFO_BYTE, GFP_KERNEL);
+ if (!info)
+ return -ENOMEM;
ret = meson_nfc_dma_buffer_setup(nand, buf, len, info,
if (ret)