On Sat, 2007-06-23 at 11:04 -0700, Andrew Morton wrote:
> On Sat, 23 Jun 2007 12:50:46 +0200 Michal Januszewski <[email protected]> wrote:
>
> > If the refresh rate hasn't been explicitly specified, fd_find_mode
> > currently returns the first mode with the requested resolution. Change
> > it so that it returns a mode with the requested resolution and the
> > highest refresh rate.
> >
> > Also export fb_destroy_modelist, which is used in uvesafb.
> >
> > Signed-off-by: Michal Januszewski <[email protected]>
> > ---
> > drivers/video/modedb.c | 7 +++++--
> > 1 files changed, 5 insertions(+), 2 deletions(-)
> >
> > diff --git a/drivers/video/modedb.c b/drivers/video/modedb.c
> > index 3741ad7..98ee77b 100644
> > --- a/drivers/video/modedb.c
> > +++ b/drivers/video/modedb.c
> > @@ -606,16 +606,18 @@ done:
> > DPRINTK("Trying specified video mode%s %ix%i\n",
> > refresh_specified ? "" : " (ignoring refresh rate)", xres, yres);
> >
> > + if (!refresh_specified)
> > + refresh = 200;
> > diff = refresh;
> > best = -1;
> > for (i = 0; i < dbsize; i++) {
> > if (name_matches(db[i], name, namelen) ||
> > (res_specified && res_matches(db[i], xres, yres))) {
> > if(!fb_try_mode(var, info, &db[i], bpp)) {
> > - if(!refresh_specified || db[i].refresh == refresh)
> > + if (refresh_specified && db[i].refresh == refresh)
> > return 1;
> > else {
> > - if(diff > abs(db[i].refresh - refresh)) {
> > + if (diff > abs(db[i].refresh - refresh)) {
> > diff = abs(db[i].refresh - refresh);
> > best = i;
> > }
> > @@ -938,6 +940,7 @@ void fb_destroy_modelist(struct list_head *head)
> > kfree(pos);
> > }
> > }
> > +EXPORT_SYMBOL_GPL(fb_destroy_modelist);
> >
>
> fbdev ignoramus asks: isn't this pretty risky? People who were previously
> relying upon (or at least using) the kernel's default resolution will find
> their displays coming up in a quite different resolution.
It's only the refresh rate that will change. The current behavior is
that a user can get near random results in terms of the vertical refresh
rates. At least with this patch, we know what we get.
>
> This change seems to be quite unrelated to the uvesafb stuff and should be
> in a separate patch from the export, which _is_ uvesafb-related. I think.
> If that's wrong then the changelog could do with some attention.
>
Tony
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