On Mon, Jan 15, 2007 at 01:44:28PM +0000, Richard Purdie wrote:
> On Mon, 2007-01-15 at 12:26 +0000, Ben Dooks wrote:
> > Generate a name if none is passed to the S3C24XX GPIO LED driver.
> >
> > Signed-off-by: Ben Dooks <[EMAIL PROTECTED]>
> >
> > diff -urpN -X ../dontdiff linux-2.6.19/drivers/leds/leds-s3c24xx.c
> > linux-2.6.19-simtec1p22/drivers/leds/leds-s3c24xx.c
> > --- linux-2.6.19/drivers/leds/leds-s3c24xx.c 2006-11-29
> > 21:57:37.000000000 +0000
> > +++ linux-2.6.19-simtec1p22/drivers/leds/leds-s3c24xx.c 2007-01-04
> > 10:22:58.000000000 +0000
> > @@ -23,6 +23,8 @@
> > /* our context */
> >
> > struct s3c24xx_gpio_led {
> > + char name[32];
> > +
> > struct led_classdev cdev;
>
> I'm not that keen on this since it wastes 32 bytes per LED when the
> platform code does declare the names. If you're happy with that, its up
> to you as the platform maintainer I guess but is there no nicer way to
> handle this? I'm mainly concerned about people copying this code into
> other drivers as then they'll all end up doing it...
Ok, how about using kstrdup() on the name, like this:
diff -urpN -X ../dontdiff linux-2.6.19/drivers/leds/leds-s3c24xx.c
linux-2.6.19-simtec1p22/drivers/leds/leds-s3c24xx.c
--- linux-2.6.19/drivers/leds/leds-s3c24xx.c 2006-11-29 21:57:37.000000000
+0000
+++ linux-2.6.19-simtec1p22/drivers/leds/leds-s3c24xx.c 2007-01-15
15:26:05.000000000 +0000
@@ -59,6 +59,9 @@ static int s3c24xx_led_remove(struct pla
{
struct s3c24xx_gpio_led *led = pdev_to_gpio(dev);
+ if (led->cdev.name != led->pdata.name)
+ kfree(led->cdev.name);
+
led_classdev_unregister(&led->cdev);
kfree(led);
@@ -85,6 +88,15 @@ static int s3c24xx_led_probe(struct plat
led->pdata = pdata;
+ /* create name if we were not passed one */
+
+ if (led->cdev.name == NULL) {
+ char name[64];
+
+ snprintf(name, sizeof(name), "%s.%d", dev->name, dev->id);
+ led->cdev.name = kstrdup(name);
+ }
+
/* no point in having a pull-up if we are always driving */
if (pdata->flags & S3C24XX_LEDF_TRISTATE) {
--
Ben
Q: What's a light-year?
A: One-third less calories than a regular year.
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