On Wed, Sep 16, 2015 at 12:47:42PM +0200, Jacek Anaszewski wrote:
The initial purpose of brightness_set_sync op, introduced along with
the LED flash class extension, was to add a means for setting torch LED
brightness as soon as possible, which couldn't have been guaranteed by
brightness_set op. This patch renames the op to brightness_set_blocking,
which describes its purpose in a more generic way, and is beneficial
in view of the prospective changes in the core related to using
LED core's set_brightness_work for setting brightness for LED class
drivers that can sleep or use delays while setting brightness.
...
- /*
- * Set LED brightness level immediately - it can block the caller for
- * the time required for accessing a LED device register.
- */
- int (*brightness_set_sync)(struct led_classdev *led_cdev,
- enum led_brightness brightness);
+ /* Can sleep or use delays */
+ int (*brightness_set_blocking)(struct led_classdev *led_cdev,
I'm no expert when it comes to flash photography with digital
cameras.
But to me the old comment seems better.
Doesn't the caller
want to know the flash is now giving out light?
The new comment gives
no indication of this, where as the old one does?