diff options
| author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2013-05-22 12:20:11 +0200 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2013-05-30 19:30:56 +0200 |
| commit | 64c8cbc17c8d4af3b600c66247e47eac99e46aaf (patch) | |
| tree | 7b05d727f66cb9c56bd6c0e6eb6a3dbffe52971b /drivers/gpio | |
| parent | gpio-langwell: initialize lock before usage (diff) | |
| download | linux-64c8cbc17c8d4af3b600c66247e47eac99e46aaf.tar.xz linux-64c8cbc17c8d4af3b600c66247e47eac99e46aaf.zip | |
gpio-langwell: do not use direct access to iomapped memory
We better to use readl() function instead of bad looking direct access.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: David Cohen <david.a.cohen@intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/gpio')
| -rw-r--r-- | drivers/gpio/gpio-langwell.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/drivers/gpio/gpio-langwell.c b/drivers/gpio/gpio-langwell.c index a0190de14371..fff661126dc7 100644 --- a/drivers/gpio/gpio-langwell.c +++ b/drivers/gpio/gpio-langwell.c @@ -65,7 +65,7 @@ enum GPIO_REG { struct lnw_gpio { struct gpio_chip chip; - void *reg_base; + void __iomem *reg_base; spinlock_t lock; struct pci_dev *pdev; struct irq_domain *domain; @@ -318,9 +318,9 @@ static const struct dev_pm_ops lnw_gpio_pm_ops = { }; static int lnw_gpio_probe(struct pci_dev *pdev, - const struct pci_device_id *id) + const struct pci_device_id *id) { - void *base; + void __iomem *base; resource_size_t start, len; struct lnw_gpio *lnw; u32 gpio_base; @@ -346,8 +346,10 @@ static int lnw_gpio_probe(struct pci_dev *pdev, retval = -EFAULT; goto err_ioremap; } - irq_base = *(u32 *)base; - gpio_base = *((u32 *)base + 1); + + irq_base = readl(base); + gpio_base = readl(sizeof(u32) + base); + /* release the IO mapping, since we already get the info from bar1 */ iounmap(base); /* get the register base from bar0 */ |