[PATCH] mtd: rawnand: intel: check return value of devm_kasprintf()

[Yi Yang]

The devm_kasprintf() returns a pointer to dynamically allocated memory.
that will return NULL when allocate failed.
Fix it by check return value of devm_kasprintf().

Fixes: 0b1039f016e8 ("mtd: rawnand: Add NAND controller support on Intel LGM SoC")
Signed-off-by: Yi Yang <yiyang13 at huawei.com>
---
 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 cb5d88f42297..765d4c9424cd 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) {
+		dev_err(dev, "Failed to allocate resname\n");
+		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) {
+		dev_err(dev, "Failed to allocate resname\n");
+		ret = -ENOMEM;
+		goto err_cleanup_dma;
+	}
 	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, resname);
 	if (!res) {
 		ret = -EINVAL;
-- 
2.25.1