From d903a0a367f3e0350a3ba1455c0a7c533977fb42 Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Wed, 23 Jul 2014 10:30:57 -0300 Subject: [PATCH] [media] omap3isp: resizer: Remove slow debugging message from interrupt handler The resizer_set_input_size() function prints a debugging message with the input width and height values. As the function is called from interrupt context, printing that message to the serial console could slow down the interrupt handler and cause it to miss the start of the next frame, causing image corruption. Fix this by reorganizing the resizer debug messages. The driver now prints the input size, the crop rectangle and the output size in the set selection handler instead of scattering debug messages in various places. Signed-off-by: Laurent Pinchart Acked-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/omap3isp/ispresizer.c | 17 +++++++++-------- 1 file changed, 9 insertions(+), 8 deletions(-) diff --git a/drivers/media/platform/omap3isp/ispresizer.c b/drivers/media/platform/omap3isp/ispresizer.c index 06d4e422b5e8..ebc812e48fe8 100644 --- a/drivers/media/platform/omap3isp/ispresizer.c +++ b/drivers/media/platform/omap3isp/ispresizer.c @@ -357,7 +357,6 @@ static void resizer_set_output_size(struct isp_res_device *res, struct isp_device *isp = to_isp_device(res); u32 rgval; - dev_dbg(isp->dev, "Output size[w/h]: %dx%d\n", width, height); rgval = (width << ISPRSZ_OUT_SIZE_HORZ_SHIFT) & ISPRSZ_OUT_SIZE_HORZ_MASK; rgval |= (height << ISPRSZ_OUT_SIZE_VERT_SHIFT) @@ -421,8 +420,6 @@ static void resizer_set_input_size(struct isp_res_device *res, struct isp_device *isp = to_isp_device(res); u32 rgval; - dev_dbg(isp->dev, "Input size[w/h]: %dx%d\n", width, height); - rgval = (width << ISPRSZ_IN_SIZE_HORZ_SHIFT) & ISPRSZ_IN_SIZE_HORZ_MASK; rgval |= (height << ISPRSZ_IN_SIZE_VERT_SHIFT) @@ -1292,12 +1289,10 @@ static int resizer_set_selection(struct v4l2_subdev *sd, format_source = __resizer_get_format(res, fh, RESZ_PAD_SOURCE, sel->which); - dev_dbg(isp->dev, "%s: L=%d,T=%d,W=%d,H=%d,which=%d\n", __func__, - sel->r.left, sel->r.top, sel->r.width, sel->r.height, - sel->which); - - dev_dbg(isp->dev, "%s: input=%dx%d, output=%dx%d\n", __func__, + dev_dbg(isp->dev, "%s(%s): req %ux%u -> (%d,%d)/%ux%u -> %ux%u\n", + __func__, sel->which == V4L2_SUBDEV_FORMAT_TRY ? "try" : "act", format_sink->width, format_sink->height, + sel->r.left, sel->r.top, sel->r.width, sel->r.height, format_source->width, format_source->height); /* Clamp the crop rectangle to the bounds, and then mangle it further to @@ -1312,6 +1307,12 @@ static int resizer_set_selection(struct v4l2_subdev *sd, *__resizer_get_crop(res, fh, sel->which) = sel->r; resizer_calc_ratios(res, &sel->r, format_source, &ratio); + dev_dbg(isp->dev, "%s(%s): got %ux%u -> (%d,%d)/%ux%u -> %ux%u\n", + __func__, sel->which == V4L2_SUBDEV_FORMAT_TRY ? "try" : "act", + format_sink->width, format_sink->height, + sel->r.left, sel->r.top, sel->r.width, sel->r.height, + format_source->width, format_source->height); + if (sel->which == V4L2_SUBDEV_FORMAT_TRY) return 0; -- 2.20.1