Re: zr36067 no longer loads automatically (regression)

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On Thu, 8 Jan 2009 22:45:20 +0100
Jean Delvare <khali@xxxxxxxxxxxx> wrote:

> Hi Mauro,
> 
> On Thu, 8 Jan 2009 17:56:27 -0200, Mauro Carvalho Chehab wrote:
> > > Hi Mauro,
> > > 
> > > This commit of yours:
> > > http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=60b4bde48b36c0315ef41fd38c339b9c7e68c46f
> > > causes the zr36067 driver to no longer load automatically on systems
> > > with a Zoran-based adapter. The comment says that zr36067_pci_tbl was
> > > unused but this isn't true when the zr36067 driver is built as a module
> > > (which is almost always the case.) zr36067_pci_tbl is used to generate
> > > the modprobe alias which lets udev load the zr36067 driver.
> > Hmm... I've forgot about udev. Anyway, just reverting it won't work fine,
> > since, when compiled in-kernel, it generates warnings and adds a code that
> > won't be used anywere.
> 
> That's right, although I don't expect it to be a problem in practice:
> who really builds media drivers into their kernels?

I do, before generating the patches upstream ;) This warning message were really bugging me, since I'm seeing it on every push requests during a long time.

> > 
> > It seems that the proper fix is the enclosed patch. Could you test it please?
> > 
> > ---
> > zoran: Re-adds udev entry removed by changeset 60b4bde48b36c0315ef41fd38c339b9c7e68c46f
> > 
> > Changeset 60b4bde48b36c0315ef41fd38c339b9c7e68c46f removed an unused struct on
> > zoran driver, when compiled with "Y". However, as pointed by Jean Delvare <khali@xxxxxxxxxxxx>,
> > this is neeeded when the driver is compiled as a module, since udev relies on it to 
> > auto-load the module.
> > 
> > Signed-off-by: Mauro Carvalho Chehab <mchehab@xxxxxxxxxx>
> > 
> > diff --git a/drivers/media/video/zoran/zoran_card.c b/drivers/media/video/zoran/zoran_card.c
> > index 05f3919..0a50700 100644
> > --- a/drivers/media/video/zoran/zoran_card.c
> > +++ b/drivers/media/video/zoran/zoran_card.c
> > @@ -153,6 +153,14 @@ MODULE_DESCRIPTION("Zoran-36057/36067 JPEG codec driver");
> >  MODULE_AUTHOR("Serguei Miridonov");
> >  MODULE_LICENSE("GPL");
> >  
> > +#if (defined(CONFIG_USB_ZR364XX_MODULE) && defined(MODULE))
> 
> Huh? I guess you really mean: CONFIG_VIDEO_ZORAN_MODULE?

Yes.

> I don't get the point of checking for both CONFIG_VIDEO_ZORAN_MODULE
> and MODULE, checking for just one of them should be enough, right?

On all places were we test for foo_MODULE, we test also for MODULE. This were due
to some trouble, but I can't remember what were was the issue...

-- 

Cheers,
Mauro
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