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| author | Bartosz Golaszewski <bartosz.golaszewski@linaro.org> | 2025-08-11 15:36:16 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-10-29 14:01:08 +0100 |
| commit | 24ccb0a4de26b087e236b7b5018b565c44fd7211 (patch) | |
| tree | dce07a718cc4d6596dc085c3fb6524ac71e8258a /drivers/mfd | |
| parent | 65d40acd911c7011745cbbd2aaac34eb5266d11e (diff) | |
| download | linux-24ccb0a4de26b087e236b7b5018b565c44fd7211.tar.gz linux-24ccb0a4de26b087e236b7b5018b565c44fd7211.tar.bz2 linux-24ccb0a4de26b087e236b7b5018b565c44fd7211.zip | |
mfd: vexpress-sysreg: Check the return value of devm_gpiochip_add_data()
commit 1efbee6852f1ff698a9981bd731308dd027189fb upstream.
Commit 974cc7b93441 ("mfd: vexpress: Define the device as MFD cells")
removed the return value check from the call to gpiochip_add_data() (or
rather gpiochip_add() back then and later converted to devres) with no
explanation. This function however can still fail, so check the return
value and bail-out if it does.
Cc: stable@vger.kernel.org
Fixes: 974cc7b93441 ("mfd: vexpress: Define the device as MFD cells")
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250811-gpio-mmio-mfd-conv-v1-1-68c5c958cf80@linaro.org
Signed-off-by: Lee Jones <lee@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/mfd')
| -rw-r--r-- | drivers/mfd/vexpress-sysreg.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/mfd/vexpress-sysreg.c b/drivers/mfd/vexpress-sysreg.c index aaf24af287dd..5e2be5a9fe4a 100644 --- a/drivers/mfd/vexpress-sysreg.c +++ b/drivers/mfd/vexpress-sysreg.c @@ -98,6 +98,7 @@ static int vexpress_sysreg_probe(struct platform_device *pdev) struct resource *mem; void __iomem *base; struct gpio_chip *mmc_gpio_chip; + int ret; mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (!mem) @@ -118,7 +119,10 @@ static int vexpress_sysreg_probe(struct platform_device *pdev) bgpio_init(mmc_gpio_chip, &pdev->dev, 0x4, base + SYS_MCI, NULL, NULL, NULL, NULL, 0); mmc_gpio_chip->ngpio = 2; - devm_gpiochip_add_data(&pdev->dev, mmc_gpio_chip, NULL); + + ret = devm_gpiochip_add_data(&pdev->dev, mmc_gpio_chip, NULL); + if (ret) + return ret; return devm_mfd_add_devices(&pdev->dev, PLATFORM_DEVID_AUTO, vexpress_sysreg_cells, |