diff options
| author | Charles Han <hanchunchao@inspur.com> | 2024-11-14 17:18:22 +0800 |
|---|---|---|
| committer | Bartosz Golaszewski <bartosz.golaszewski@linaro.org> | 2024-11-18 11:45:06 +0100 |
| commit | 050b23d081da0f29474de043e9538c1f7a351b3b (patch) | |
| tree | c5ebf806870b40776ea074731836d3366ab40f00 /drivers/gpio | |
| parent | b6621b1d4b1d0459ba6b49c0bc498c352ac115ab (diff) | |
| download | lwn-050b23d081da0f29474de043e9538c1f7a351b3b.tar.gz lwn-050b23d081da0f29474de043e9538c1f7a351b3b.zip | |
gpio: grgpio: Add NULL check in grgpio_probe
devm_kasprintf() can return a NULL pointer on failure,but this
returned value in grgpio_probe is not checked.
Add NULL check in grgpio_probe, to handle kernel NULL
pointer dereference error.
Cc: stable@vger.kernel.org
Fixes: 7eb6ce2f2723 ("gpio: Convert to using %pOF instead of full_name")
Signed-off-by: Charles Han <hanchunchao@inspur.com>
Link: https://lore.kernel.org/r/20241114091822.78199-1-hanchunchao@inspur.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Diffstat (limited to 'drivers/gpio')
| -rw-r--r-- | drivers/gpio/gpio-grgpio.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpio/gpio-grgpio.c b/drivers/gpio/gpio-grgpio.c index 7ffe59d845f0..169f33c41c59 100644 --- a/drivers/gpio/gpio-grgpio.c +++ b/drivers/gpio/gpio-grgpio.c @@ -369,6 +369,9 @@ static int grgpio_probe(struct platform_device *ofdev) gc->owner = THIS_MODULE; gc->to_irq = grgpio_to_irq; gc->label = devm_kasprintf(dev, GFP_KERNEL, "%pOF", np); + if (!gc->label) + return -ENOMEM; + gc->base = -1; err = of_property_read_u32(np, "nbits", &prop); |