[PATCH 1/3] pinctrl: mcp23s08: check return value of devm_kasprintf()
From: Claudiu Beznea <hidden>
Date: 2023-06-15 10:54:10
Also in:
linux-gpio, lkml
Subsystem:
pin control subsystem, the rest · Maintainers:
Linus Walleij, Linus Torvalds
devm_kasprintf() returns a pointer to dynamically allocated memory.
Pointer could be NULL in case allocation fails. Check pointer validity.
Identified with coccinelle (kmerr.cocci script).
Fixes: 0f04a81784fe ("pinctrl: mcp23s08: Split to three parts: core, I²C, SPI")
Signed-off-by: Claudiu Beznea <redacted>
---
drivers/pinctrl/pinctrl-mcp23s08_spi.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/pinctrl/pinctrl-mcp23s08_spi.c b/drivers/pinctrl/pinctrl-mcp23s08_spi.c
index 9ae10318f6f3..4013ffbfa282 100644
--- a/drivers/pinctrl/pinctrl-mcp23s08_spi.c
+++ b/drivers/pinctrl/pinctrl-mcp23s08_spi.c@@ -119,6 +119,9 @@ static int mcp23s08_spi_regmap_init(struct mcp23s08 *mcp, struct device *dev, return -EINVAL; } + if (!name || !mcp->chip.label) + return -ENOMEM; + copy = devm_kmemdup(dev, config, sizeof(*config), GFP_KERNEL); if (!copy) return -ENOMEM;
--
2.34.1
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