On Wed, Oct 17, 2018 at 08:17:20PM +0530, Nishad Kamdar wrote:
+ chip->rdwr_pin = devm_gpiod_get(&spi_dev->dev, "rdwr", GPIOD_IN);
+ if (IS_ERR(chip->rdwr_pin)) {
+ ret = PTR_ERR(chip->rdwr_pin);
+ dev_err(&spi_dev->dev, "Failed to request rdwr GPIO: %d\n",
+ ret);
return ret;
}
- gpio_direction_input(chip->rdwr_pin);
- ret = devm_gpio_request(&spi_dev->dev, chip->convert_pin,
- spi_get_device_id(spi_dev)->name);
- if (ret) {
- dev_err(&spi_dev->dev, "Fail to request convert gpio PIN %d.\n",
- chip->convert_pin);
+ chip->convert_pin = devm_gpiod_get(&spi_dev->dev, "convert", GPIOD_IN);
+ if (IS_ERR(chip->convert_pin)) {
+ ret = PTR_ERR(chip->convert_pin);
+ dev_err(&spi_dev->dev, "Failed to request convert GPIO: %d\n",
+ ret);
return ret;
}
- gpio_direction_input(chip->convert_pin);
- ret = devm_gpio_request(&spi_dev->dev, chip->busy_pin,
- spi_get_device_id(spi_dev)->name);
- if (ret) {
- dev_err(&spi_dev->dev, "Fail to request busy gpio PIN %d.\n",
- chip->busy_pin);
+ chip->busy_pin = devm_gpiod_get(&spi_dev->dev, "busy", GPIOD_IN);
+ if (IS_ERR(chip->busy_pin)) {
+ ret = PTR_ERR(chip->busy_pin);
+ dev_err(&spi_dev->dev, "Failed to request busy GPIO: %d\n",
+ ret);
return ret;
}
Hm, from what I can tell devm_gpio_request() is allocating some memory,
which makes this a series of 4 allocations.
What happens if the fourth allocation fails? Do we leak the first three?
--
Thanks,
Sasha
_______________________________________________
devel mailing list
devel@xxxxxxxxxxxxxxxxxxxxxx
http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
