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leds-lp5521: modify the way of setting led device name

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Currently the led device name is fetched from the device_type in
I2C_BOARD_INFO which comes from the platform data.  This name is in turn
used to create an entry in sysfs.

If there exists two or more lp5521 on a particular platform, the
device_type in I2C_BOARD_INFO has to be the same, else lp5521 driver probe
wont be called and if used so, results in run time warning "cannot create
sysfs with same name" and hence a failure.

The name that is used to create sysfs entry is to be passed by the struct
led_platform_data.  Hence adding an element of type const char * and
change in lp5521 driver to use this name in creating the led device if
present else use the name obtained by I2C_BOARD_INFO.

Signed-off-by: Arun Murthy <[email protected]>
Acked-by: Samu Onkalo <[email protected]>
Cc: Ilkka Koskinen <[email protected]>
Cc: Richard Purdie <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Arun Murthy 2011-01-12 16:59:20 -08:00 • committed by Linus Torvalds
commit 61a83932b8
2 changed files with 3 additions and 1 deletions
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3
drivers/leds/leds-lp5521.c
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@ -617,7 +617,8 @@ static int __init lp5521_init_led(struct lp5521_led *led,
return -EINVAL;
}
snprintf(name, sizeof(name), "%s:channel%d", client->name, chan);
snprintf(name, sizeof(name), "%s:channel%d",
pdata->label ?: client->name, chan);
led->cdev.brightness_set = lp5521_set_brightness;
led->cdev.name = name;
res = led_classdev_register(dev, &led->cdev);