From: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
To: linux-amlogic@lists.infradead.org, linux-mtd@lists.infradead.org,
bbrezillon@kernel.org, miquel.raynal@bootlin.com
Cc: Martin Blumenstingl <martin.blumenstingl@googlemail.com>,
richard@nod.at, liang.yang@amlogic.com,
linux-kernel@vger.kernel.org, jianxin.pan@amlogic.com
Subject: [PATCH v2 1/2] mtd: rawnand: meson: add missing ENOMEM check in meson_nfc_read_buf()
Date: Mon, 18 Mar 2019 21:47:21 +0100 [thread overview]
Message-ID: <20190318204722.9901-2-martin.blumenstingl@googlemail.com> (raw)
In-Reply-To: <20190318204722.9901-1-martin.blumenstingl@googlemail.com>
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@googlemail.com>
Acked-by: Liang Yang <liang.yang@amlogic.com>
---
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,
PER_INFO_BYTE, DMA_FROM_DEVICE);
if (ret)
--
2.21.0
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next prev parent reply other threads:[~2019-03-18 20:47 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-18 20:47 [PATCH v2 0/2] meson-nand: two small memory related fixes Martin Blumenstingl
2019-03-18 20:47 ` Martin Blumenstingl [this message]
2019-03-19 16:16 ` [PATCH v2 1/2] mtd: rawnand: meson: add missing ENOMEM check in meson_nfc_read_buf() Kevin Hilman
2019-03-18 20:47 ` [PATCH v2 2/2] mtd: rawnand: meson: fix a potential memory leak in meson_nfc_read_buf Martin Blumenstingl
2019-03-19 16:17 ` Kevin Hilman
2019-04-01 15:27 ` [PATCH v2 0/2] meson-nand: two small memory related fixes Miquel Raynal
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