Commit f22926e0 authored Mar 26, 2012 by Laurent Pinchart Committed by Mauro Carvalho Chehab May 08, 2012

[media] omap3isp: preview: Optimize parameters setup for the common case



If no parameter needs to be modified, make preview_config() and
preview_setup_hw() return immediately. This speeds up interrupt handling
in the common case.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Sakari Ailus <sakari.ailus@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

parent 213cf90b

drivers/media/video/omap3isp/isppreview.c

+6 −0

Original line number	Diff line number	Diff line
		@@ -889,6 +889,9 @@ static int preview_config(struct isp_prev_device *prev,
		struct preview_update *attr;
		int i, bit, rval = 0;

		if (cfg->update == 0)
		return 0;

		params = &prev->params;

		if (prev->state != ISP_PIPELINE_STREAM_STOPPED) {
		@@ -944,6 +947,9 @@ static void preview_setup_hw(struct isp_prev_device *prev)
		int i, bit;
		void *param_ptr;

		if (prev->update == 0)
		return;

		for (i = 0; i < ARRAY_SIZE(update_attrs); i++) {
		attr = &update_attrs[i];