[PATCH v2 1/6] fb: add a line_length value to struct fb_info

[Alexander Aring]

On Tue, Nov 05, 2013 at 12:00:59AM +0100, Andre Heider wrote:
> Add support for framebuffers with noncontiguous horizontal lines.
> 
> Video drivers can set this value if the hardware requires it.
> In case a driver does not set it, the current value of
> xres * (bpp / 8) is used instead.
> 
> Signed-off-by: Andre Heider <a.heider at gmail.com>
> ---
>  drivers/video/fb.c | 11 +++++++++--
>  include/fb.h       |  1 +
>  2 files changed, 10 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/video/fb.c b/drivers/video/fb.c
> index 420e4e3..0159994 100644
> --- a/drivers/video/fb.c
> +++ b/drivers/video/fb.c
> @@ -72,12 +72,16 @@ static int fb_setup_mode(struct device_d *dev, struct param_d *param,
>  
>  	info->xres = info->mode->xres;
>  	info->yres = info->mode->yres;
> +	info->line_length = 0;
>  
>  	ret = info->fbops->fb_activate_var(info);
>  
> +	if (!info->line_length)
> +		info->line_length = info->xres * (info->bits_per_pixel >> 3);
> +
Isn't this already set from the register_framebuffer function?
You wanna see that somebody changed this value in info->fbops->fb_activate_var(info)?

Then I would do nothing here.

- Alex