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sm501: fixes for akpms comments on gpiolib addition 

Fixup the comments from the patch that added the gpiolib support from
Andrew Morton.  These include spotting some missing frees on error or
release, and changing a memcpy for a type-safe assingment.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Ben Dooks 2008-07-25 01:46:02 -07:00 committed by Linus Torvalds
parent 42cd2366fb
commit 28130bea3b
1 changed files with 16 additions and 8 deletions
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24
drivers/mfd/sm501.c
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@ -999,7 +999,7 @@ static int __devinit sm501_gpio_register_chip(struct sm501_devdata *sm,
struct gpio_chip *gchip = &chip->gpio;
int base = pdata->gpio_base;
memcpy(chip, &gpio_chip_template, sizeof(struct gpio_chip));
chip->gpio = gpio_chip_template;
if (chip == &gpio->high) {
if (base > 0)
@ -1039,7 +1039,7 @@ static int sm501_register_gpio(struct sm501_devdata *sm)
if (gpio->regs == NULL) {
dev_err(sm->dev, "gpio: failed to remap registers\n");
ret = -ENXIO;
goto err_mapped;
goto err_claimed;
}
/* Register both our chips. */
@ -1068,6 +1068,9 @@ static int sm501_register_gpio(struct sm501_devdata *sm)
}
err_mapped:
iounmap(gpio->regs);
err_claimed:
release_resource(gpio->regs_res);
kfree(gpio->regs_res);
@ -1076,33 +1079,38 @@ static int sm501_register_gpio(struct sm501_devdata *sm)
static void sm501_gpio_remove(struct sm501_devdata *sm)
{
struct sm501_gpio *gpio = &sm->gpio;
int ret;
ret = gpiochip_remove(&sm->gpio.low.gpio);
ret = gpiochip_remove(&gpio->low.gpio);
if (ret)
dev_err(sm->dev, "cannot remove low chip, cannot tidy up\n");
ret = gpiochip_remove(&sm->gpio.high.gpio);
ret = gpiochip_remove(&gpio->high.gpio);
if (ret)
dev_err(sm->dev, "cannot remove high chip, cannot tidy up\n");
iounmap(gpio->regs);
release_resource(gpio->regs_res);
kfree(gpio->regs_res);
}
static int sm501_gpio_pin2nr(struct sm501_devdata *sm, unsigned int pin)
static inline int sm501_gpio_pin2nr(struct sm501_devdata *sm, unsigned int pin)
{
struct sm501_gpio *gpio = &sm->gpio;
return pin + (pin < 32) ? gpio->low.gpio.base : gpio->high.gpio.base;
}
#else
static int sm501_register_gpio(struct sm501_devdata *sm)
static inline int sm501_register_gpio(struct sm501_devdata *sm)
{
return 0;
}
static void sm501_gpio_remove(struct sm501_devdata *sm)
static inline void sm501_gpio_remove(struct sm501_devdata *sm)
{
}
static int sm501_gpio_pin2nr(struct sm501_devdata *sm, unsigned int pin)
static inline int sm501_gpio_pin2nr(struct sm501_devdata *sm, unsigned int pin)
{
return -1;
}