[PATCH] chardev: GPIO for SCx200 & PC-8736x: use dev_dbg in common module
Use of dev_dbg() and friends is considered good practice. dev_dbg() needs a
struct device *devp, but nsc_gpio is only a helper module, so it doesnt
have/need its own. To provide devp to the user-modules (scx200 & pc8736x
_gpio), we add it to the vtable, and set it during init.
Also squeeze nsc_gpio_dump()'s format a little.
[ 199.259879] pc8736x_gpio.0: io09: 0x0044 TS OD PUE EDGE LO DEBOUNCE
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>
diff --git a/drivers/char/scx200_gpio.c b/drivers/char/scx200_gpio.c
index 442367b..5a280a3 100644
--- a/drivers/char/scx200_gpio.c
+++ b/drivers/char/scx200_gpio.c
@@ -35,14 +35,6 @@
module_param(major, int, 0);
MODULE_PARM_DESC(major, "Major device number");
-extern void nsc_gpio_dump(unsigned index);
-
-extern ssize_t nsc_gpio_write(struct file *file, const char __user *data,
- size_t len, loff_t *ppos);
-
-extern ssize_t nsc_gpio_read(struct file *file, char __user *buf,
- size_t len, loff_t *ppos);
-
struct nsc_gpio_ops scx200_access = {
.owner = THIS_MODULE,
.gpio_config = scx200_gpio_configure,
@@ -101,6 +93,9 @@
if (rc)
goto undo_malloc;
+ /* nsc_gpio uses dev_dbg(), so needs this */
+ scx200_access.dev = &pdev->dev;
+
if (major)
rc = register_chrdev_region(dev, num_pins, "scx200_gpio");
else {