6.5-stable review patch. If anyone has any objections, please let me know.
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From: Yi Yang yiyang13@huawei.com
[ 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: 0b1039f016e8 ("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.co... Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/mtd/nand/raw/intel-nand-controller.c | 10 ++++++++++ 1 file changed, 10 insertions(+)
diff --git a/drivers/mtd/nand/raw/intel-nand-controller.c b/drivers/mtd/nand/raw/intel-nand-controller.c index a9909eb081244..8231e9828dce7 100644 --- a/drivers/mtd/nand/raw/intel-nand-controller.c +++ b/drivers/mtd/nand/raw/intel-nand-controller.c @@ -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;