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mtd: rawnand: intel: check return value of devm_kasprintf()

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[ Upstream commit 74ac5b5e2375f1e8ef797ac7770887e9969f2516 ]

devm_kasprintf() returns a pointer to dynamically allocated memory
which can be NULL upon failure. Ensure the allocation was successful by
checking the pointer validity.

Fixes: 0b1039f016 ("mtd: rawnand: Add NAND controller support on Intel LGM SoC")
Signed-off-by: Yi Yang <yiyang13@huawei.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20231019065537.318391-1-yiyang13@huawei.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Yi Yang 2023-10-19 06:55:37 +00:00 • committed by Greg Kroah-Hartman
parent 8d02b6fb3c
commit b2a9ba69df
1 changed files with 10 additions and 0 deletions
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10
drivers/mtd/nand/raw/intel-nand-controller.c
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@ -619,6 +619,11 @@ static int ebu_nand_probe(struct platform_device *pdev)
ebu_host->cs_num = cs;
resname = devm_kasprintf(dev, GFP_KERNEL, "nand_cs%d", cs);
if (!resname) {
ret = -ENOMEM;
goto err_of_node_put;
}
ebu_host->cs[cs].chipaddr = devm_platform_ioremap_resource_byname(pdev,
resname);
if (IS_ERR(ebu_host->cs[cs].chipaddr)) {
@ -655,6 +660,11 @@ static int ebu_nand_probe(struct platform_device *pdev)
}
resname = devm_kasprintf(dev, GFP_KERNEL, "addr_sel%d", cs);
if (!resname) {
ret = -ENOMEM;
goto err_cleanup_dma;
}
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, resname);
if (!res) {
ret = -EINVAL;