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| author | Claudiu Beznea <claudiu.beznea@microchip.com> | 2023-06-21 13:04:09 +0300 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2023-08-10 09:56:31 +0200 |
| commit | f941714a7c7698eadb59bc27d34d6d6f38982705 (patch) | |
| tree | e1bdb9c46de7689b5d1406f056e00bdb8eafeecd /drivers/pinctrl/pinctrl-mcp23s08_spi.c | |
| parent | 6387e0aa812297c4204d805b3df053fd58b699d1 (diff) | |
| download | linux-f941714a7c7698eadb59bc27d34d6d6f38982705.tar.gz linux-f941714a7c7698eadb59bc27d34d6d6f38982705.tar.bz2 linux-f941714a7c7698eadb59bc27d34d6d6f38982705.zip | |
pinctrl: mcp23s08: check return value of devm_kasprintf()
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 <claudiu.beznea@microchip.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20230621100409.1608395-1-claudiu.beznea@microchip.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/pinctrl/pinctrl-mcp23s08_spi.c')
| -rw-r--r-- | drivers/pinctrl/pinctrl-mcp23s08_spi.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/pinctrl/pinctrl-mcp23s08_spi.c b/drivers/pinctrl/pinctrl-mcp23s08_spi.c index 9ae10318f6f3..ea059b9c5542 100644 --- a/drivers/pinctrl/pinctrl-mcp23s08_spi.c +++ b/drivers/pinctrl/pinctrl-mcp23s08_spi.c @@ -91,18 +91,28 @@ static int mcp23s08_spi_regmap_init(struct mcp23s08 *mcp, struct device *dev, mcp->reg_shift = 0; mcp->chip.ngpio = 8; mcp->chip.label = devm_kasprintf(dev, GFP_KERNEL, "mcp23s08.%d", addr); + if (!mcp->chip.label) + return -ENOMEM; config = &mcp23x08_regmap; name = devm_kasprintf(dev, GFP_KERNEL, "%d", addr); + if (!name) + return -ENOMEM; + break; case MCP_TYPE_S17: mcp->reg_shift = 1; mcp->chip.ngpio = 16; mcp->chip.label = devm_kasprintf(dev, GFP_KERNEL, "mcp23s17.%d", addr); + if (!mcp->chip.label) + return -ENOMEM; config = &mcp23x17_regmap; name = devm_kasprintf(dev, GFP_KERNEL, "%d", addr); + if (!name) + return -ENOMEM; + break; case MCP_TYPE_S18: |