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| author | Laurent Pinchart <laurent.pinchart@ideasonboard.com> | 2012-03-26 10:24:50 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-05-08 13:52:33 -0300 |
| commit | f22926e06e1ab7aa5f5c532afa4591f3d9baf59c (patch) | |
| tree | 4d736ec9974a4921fae70279b8888351a82265b0 | |
| parent | 213cf90b9ad07d40c1e7aa5781907695107fe188 (diff) | |
| download | linux-f22926e06e1ab7aa5f5c532afa4591f3d9baf59c.tar.gz linux-f22926e06e1ab7aa5f5c532afa4591f3d9baf59c.tar.xz linux-f22926e06e1ab7aa5f5c532afa4591f3d9baf59c.zip | |
[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>
| -rw-r--r-- | drivers/media/video/omap3isp/isppreview.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/media/video/omap3isp/isppreview.c b/drivers/media/video/omap3isp/isppreview.c index cf5014f2302d..04c96899f005 100644 --- a/drivers/media/video/omap3isp/isppreview.c +++ b/drivers/media/video/omap3isp/isppreview.c @@ -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]; |