Commit 74ac5b5e authored by Yi Yang's avatar Yi Yang Committed by Miquel Raynal
Browse files

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



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: 0b1039f0 ("mtd: rawnand: Add NAND controller support on Intel LGM SoC")
Signed-off-by: default avatarYi Yang <yiyang13@huawei.com>
Signed-off-by: default avatarMiquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20231019065537.318391-1-yiyang13@huawei.com
parent 60ec53ac

drivers/mtd/nand/raw/intel-nand-controller.c

+10 −0
Original line number Diff line number Diff line
@@ -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)) {
@@ -649,6 +654,11 @@ 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;