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[PATCH] pc8736x_gpio: fix re-modprobe errors: define and use constants 

add constant defines - preparatory patch

- adds #define CONSTs  for max-pin,  gpio-addr-range (for reserving region)
- fix wrong max-pin check in gpio_open()
- add 'Winbond' to module description.  NSC sold the product, Winbond
  has supported us / lm-sensors

Signed-off-by: Jim Cromie <jim.cromie@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Jim Cromie 2006-07-10 04:45:35 -07:00 committed by Linus Torvalds
parent 1a87d9425e
commit 4f197842d0
1 changed files with 5 additions and 5 deletions
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10
drivers/char/pc8736x_gpio.c
View File

@ -25,7 +25,7 @@
#define DEVNAME "pc8736x_gpio"
MODULE_AUTHOR("Jim Cromie <jim.cromie@gmail.com>");
MODULE_DESCRIPTION("NatSemi PC-8736x GPIO Pin Driver");
MODULE_DESCRIPTION("NatSemi/Winbond PC-8736x GPIO Pin Driver");
MODULE_LICENSE("GPL");
static int major; /* default to dynamic major */
@ -38,14 +38,14 @@ static u8 pc8736x_gpio_shadow[4];
#define SIO_BASE1 0x2E /* 1st command-reg to check */
#define SIO_BASE2 0x4E /* alt command-reg to check */
#define SIO_BASE_OFFSET 0x20
#define SIO_SID 0x20 /* SuperI/O ID Register */
#define SIO_SID_VALUE 0xe9 /* Expected value in SuperI/O ID Register */
#define SIO_CF1 0x21 /* chip config, bit0 is chip enable */
#define PC8736X_GPIO_SIZE 16
#define PC8736X_GPIO_RANGE 16 /* ioaddr range */
#define PC8736X_GPIO_CT 32 /* minors matching 4 8 bit ports */
#define SIO_UNIT_SEL 0x7 /* unit select reg */
#define SIO_UNIT_ACT 0x30 /* unit enable */
@ -231,7 +231,7 @@ static int pc8736x_gpio_open(struct inode *inode, struct file *file)
dev_dbg(&pdev->dev, "open %d\n", m);
if (m > 63)
if (m >= PC8736X_GPIO_CT)
return -EINVAL;
return nonseekable_open(inode, file);
}
@ -297,7 +297,7 @@ static int __init pc8736x_gpio_init(void)
pc8736x_gpio_base = (superio_inb(SIO_BASE_HADDR) << 8
| superio_inb(SIO_BASE_LADDR));
if (!request_region(pc8736x_gpio_base, 16, DEVNAME)) {
if (!request_region(pc8736x_gpio_base, PC8736X_GPIO_RANGE, DEVNAME)) {
rc = -ENODEV;
dev_err(&pdev->dev, "GPIO ioport %x busy\n",
pc8736x_gpio_base);