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leds: syscon: Make the driver explicitly non-modular 

The Kconfig currently controlling compilation of this code is:

drivers/leds/Kconfig:config LEDS_SYSCON
drivers/leds/Kconfig:   bool "LED support for LEDs on system controllers"

...meaning that it currently is not being built as a module by anyone.

Lets remove the modular code that is essentially orphaned, so that
when reading the driver there is no doubt it is builtin-only.

We explicitly disallow a driver unbind, since that doesn't have a
sensible use case anyway, and it allows us to drop the ".remove"
code for non-modular drivers.

Since module_platform_driver() uses the same init level priority as
builtin_platform_driver() the init ordering remains unchanged with
this commit.

Also note that MODULE_DEVICE_TABLE is a no-op for non-modular code.

Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: linux-leds@vger.kernel.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
This commit is contained in:
Paul Gortmaker 2015-12-13 16:45:51 -05:00 committed by Jacek Anaszewski
parent 067a8f3cad
commit f7d98a65d0
1 changed files with 3 additions and 15 deletions
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18
drivers/leds/leds-syscon.c
View File

@ -20,7 +20,7 @@
* MA 02111-1307 USA
*/
#include <linux/io.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/of_device.h>
#include <linux/of_address.h>
#include <linux/platform_device.h>
@ -139,29 +139,17 @@ static int syscon_led_probe(struct platform_device *pdev)
return 0;
}
static int syscon_led_remove(struct platform_device *pdev)
{
struct syscon_led *sled = platform_get_drvdata(pdev);
led_classdev_unregister(&sled->cdev);
/* Turn it off */
regmap_update_bits(sled->map, sled->offset, sled->mask, 0);
return 0;
}
static const struct of_device_id of_syscon_leds_match[] = {
{ .compatible = "register-bit-led", },
{},
};
MODULE_DEVICE_TABLE(of, of_syscon_leds_match);
static struct platform_driver syscon_led_driver = {
.probe = syscon_led_probe,
.remove = syscon_led_remove,
.driver = {
.name = "leds-syscon",
.of_match_table = of_syscon_leds_match,
.suppress_bind_attrs = true,
},
};
module_platform_driver(syscon_led_driver);
builtin_platform_driver(syscon_led_driver);