From: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
To: linux-amlogic@lists.infradead.org, linux-mtd@lists.infradead.org,
liang.yang@amlogic.com
Cc: jianxin.pan@amlogic.com, bbrezillon@kernel.org,
Martin Blumenstingl <martin.blumenstingl@googlemail.com>,
richard@nod.at, linux-kernel@vger.kernel.org,
miquel.raynal@bootlin.com
Subject: [PATCH 1/2] mtd: rawnand: meson: add missing ENOMEM check in meson_nfc_read_buf()
Date: Fri, 1 Mar 2019 18:38:19 +0100 [thread overview]
Message-ID: <20190301173820.30776-2-martin.blumenstingl@googlemail.com> (raw)
In-Reply-To: <20190301173820.30776-1-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>
---
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:[~2019-03-01 17:39 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-01 17:38 [PATCH 0/2] meson-nand: two small memory related fixes Martin Blumenstingl
2019-03-01 17:38 ` Martin Blumenstingl [this message]
2019-03-04 2:28 ` [PATCH 1/2] mtd: rawnand: meson: add missing ENOMEM check in meson_nfc_read_buf() Liang Yang
2019-03-01 17:38 ` [PATCH 2/2] mtd: rawnand: meson: fix a potential memory leak in meson_nfc_read_buf Martin Blumenstingl
2019-03-04 2:29 ` Liang Yang
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