linux-kernel - Re: [PATCH] media: fix VIDEO_CAMERA

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Date:   Tue, 12 Sep 2023 18:59:56 +0300
From:   Laurent Pinchart <laurent.pinchart@...asonboard.com>
To:     Sakari Ailus <sakari.ailus@...ux.intel.com>
Cc:     Arnd Bergmann <arnd@...nel.org>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Hans Verkuil <hverkuil-cisco@...all.nl>,
        Hans de Goede <hdegoede@...hat.com>,
        Arnd Bergmann <arnd@...db.de>, linux-media@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] media: fix VIDEO_CAMERA_SENSOR dependencies

On Tue, Sep 12, 2023 at 12:16:03PM +0000, Sakari Ailus wrote:
> Hi Arnd,
> 
> On Tue, Sep 12, 2023 at 02:01:42PM +0200, Arnd Bergmann wrote:
> > From: Arnd Bergmann <arnd@...db.de>
> > 
> > The new Kconfig submenu now guards the visibility of camera sensor drivers,
> > and any driver that selects one of them runs into a missing dependency warning
> > if it's disabled:
> > 
> > WARNING: unmet direct dependencies detected for VIDEO_OV2640
> >   Depends on [n]: MEDIA_SUPPORT [=y] && VIDEO_DEV [=y] && VIDEO_CAMERA_SENSOR [=n]
> >   Selected by [y]:
> >   - VIDEO_EM28XX_V4L2 [=y] && USB [=y] && MEDIA_SUPPORT [=y] && MEDIA_USB_SUPPORT [=y] && (MEDIA_CAMERA_SUPPORT [=y] || MEDIA_ANALOG_TV_SUPPORT [=y] || MEDIA_DIGITAL_TV_SUPPORT [=y]) && VIDEO_EM28XX [=y] && MEDIA_SUBDRV_AUTOSELECT [=y] && MEDIA_CAMERA_SUPPORT [=y]
> >   - VIDEO_GO7007 [=y] && MEDIA_SUPPORT [=y] && MEDIA_USB_SUPPORT [=y] && MEDIA_ANALOG_TV_SUPPORT [=y] && VIDEO_DEV [=y] && I2C [=y] && SND [=y] && USB [=y] && MEDIA_SUBDRV_AUTOSELECT [=y] && MEDIA_CAMERA_SUPPORT [=y]
> > 
> > WARNING: unmet direct dependencies detected for VIDEO_MT9V011
> >   Depends on [n]: MEDIA_SUPPORT [=y] && VIDEO_DEV [=y] && VIDEO_CAMERA_SENSOR [=n]
> >   Selected by [y]:
> >   - VIDEO_EM28XX_V4L2 [=y] && USB [=y] && MEDIA_SUPPORT [=y] && MEDIA_USB_SUPPORT [=y] && (MEDIA_CAMERA_SUPPORT [=y] || MEDIA_ANALOG_TV_SUPPORT [=y] || MEDIA_DIGITAL_TV_SUPPORT [=y]) && VIDEO_EM28XX [=y] && MEDIA_SUBDRV_AUTOSELECT [=y] && MEDIA_CAMERA_SUPPORT [=y]
> > 
> > WARNING: unmet direct dependencies detected for VIDEO_OV7670
> >   Depends on [n]: MEDIA_SUPPORT [=y] && VIDEO_DEV [=y] && VIDEO_CAMERA_SENSOR [=n]
> >   Selected by [y]:
> >   - VIDEO_CAFE_CCIC [=y] && MEDIA_SUPPORT [=y] && MEDIA_PLATFORM_SUPPORT [=y] && MEDIA_PLATFORM_DRIVERS [=y] && V4L_PLATFORM_DRIVERS [=y] && PCI [=y] && I2C [=y] && VIDEO_DEV [=y] && COMMON_CLK [=y]
> >   - VIDEO_MMP_CAMERA [=y] && MEDIA_SUPPORT [=y] && MEDIA_PLATFORM_SUPPORT [=y] && MEDIA_PLATFORM_DRIVERS [=y] && V4L_PLATFORM_DRIVERS [=y] && I2C [=y] && VIDEO_DEV [=y] && (ARCH_MMP [=y] || COMPILE_TEST [=y]) && COMMON_CLK [=y]
> >   - VIDEO_VIA_CAMERA [=y] && MEDIA_SUPPORT [=y] && MEDIA_PLATFORM_SUPPORT [=y] && MEDIA_PLATFORM_DRIVERS [=y] && V4L_PLATFORM_DRIVERS [=y] && FB_VIA [=y] && VIDEO_DEV [=y]
> > 
> > Some of these are guarded by 'if MEDIA_SUBDRV_AUTOSELECT &&
> > MEDIA_CAMERA_SUPPORT', which seems to be the right approach, so update
> > those to use the new VIDEO_CAMERA_SENSOR symbol instead of
> > MEDIA_CAMERA_SUPPORT and add the same condition to the ones that
> > don't already have one.
> > 
> > Fixes: 7d3c7d2a2914e ("media: i2c: Add a camera sensor top level menu")
> > Signed-off-by: Arnd Bergmann <arnd@...db.de>
> 
> I believe these matters have been fixed, but the fixes are only in the
> media stage tree so far (and not in the fixes branch). They should go to
> v6.6, not v6.7.

That would be commits f59933e8b1d1 ("media: via: Use correct dependency
for camera sensor drivers") and 8ba283f6c929 ("media: v4l: Use correct
dependency for camera sensor drivers"). The latter is identical to the
corresponding changes in this patch, but the former lacks the
MEDIA_SUBDRV_AUTOSELECT check. Is this intentional ?


-- 
Regards,

Laurent Pinchart