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mtd: lpddr2_nvm: Fix possible null-ptr-deref

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[ Upstream commit 6bdd45d795 ]

It will cause null-ptr-deref when resource_size(add_range) invoked,
if platform_get_resource() returns NULL.

Fixes: 96ba9dd657 ("mtd: lpddr: add driver for LPDDR2-NVM PCM memories")
Signed-off-by: Hui Tang <tanghui20@huawei.com>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20221114090240.244172-1-tanghui20@huawei.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Hui Tang 2022-11-14 17:02:40 +08:00 • committed by Greg Kroah-Hartman
commit 0919982a17
1 changed files with 2 additions and 0 deletions
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2
drivers/mtd/lpddr/lpddr2_nvm.c
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@ -433,6 +433,8 @@ static int lpddr2_nvm_probe(struct platform_device *pdev)
/* lpddr2_nvm address range */
add_range = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!add_range)
return -ENODEV;
/* Populate map_info data structure */
*map = (struct map_info) {