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Subject[PATCH] gpio: pcf857x: fixup smatch WARNING
6e20a0a429bd4dc07d6de16d9c247270e04e4aa0
(gpio: pcf857x: enable gpio_to_irq() support)
added new smatch warnings

drivers/gpio/gpio-pcf857x.c:288 pcf857x_probe() error: we previously \
assumed 'pdata' could be null (see line 277)
drivers/gpio/gpio-pcf857x.c:364 pcf857x_probe() warn: variable dereferenced\
before check 'pdata' (see line 292)
drivers/gpio/gpio-pcf857x.c:421 pcf857x_remove() error: we previously\
assumed 'pdata' could be null (see line 410)

This patch fixes it

Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
---
drivers/gpio/gpio-pcf857x.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/gpio/gpio-pcf857x.c b/drivers/gpio/gpio-pcf857x.c
index 12e3e48..16af35c 100644
--- a/drivers/gpio/gpio-pcf857x.c
+++ b/drivers/gpio/gpio-pcf857x.c
@@ -285,7 +285,7 @@ static int pcf857x_probe(struct i2c_client *client,
gpio->chip.ngpio = id->driver_data;

/* enable gpio_to_irq() if platform has settings */
- if (pdata->irq) {
+ if (pdata && pdata->irq) {
status = pcf857x_irq_domain_init(gpio, pdata, &client->dev);
if (status < 0) {
dev_err(&client->dev, "irq_domain init failed\n");
@@ -394,7 +394,7 @@ fail:
dev_dbg(&client->dev, "probe error %d for '%s'\n",
status, client->name);

- if (pdata->irq)
+ if (pdata && pdata->irq)
pcf857x_irq_domain_cleanup(gpio);

kfree(gpio);
@@ -418,7 +418,7 @@ static int pcf857x_remove(struct i2c_client *client)
}
}

- if (pdata->irq)
+ if (pdata && pdata->irq)
pcf857x_irq_domain_cleanup(gpio);

status = gpiochip_remove(&gpio->chip);
--
1.7.9.5


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