| Date | Tue, 3 Dec 2019 11:22:50 +0100 | From | Pavel Machek <> | Subject | Re: [PATCH 4.19 211/306] media: ov13858: Check for possible null pointer |
| |
Hi!
> From: Chiranjeevi Rapolu <chiranjeevi.rapolu@intel.com> > > [ Upstream commit 35629182eb8f931b0de6ed38c0efac58e922c801 ] > > Check for possible null pointer to avoid crash.
> diff --git a/drivers/media/i2c/ov13858.c b/drivers/media/i2c/ov13858.c > index 0e7a85c4996c7..afd66d243403b 100644 > --- a/drivers/media/i2c/ov13858.c > +++ b/drivers/media/i2c/ov13858.c > @@ -1612,7 +1612,8 @@ static int ov13858_init_controls(struct ov13858 *ov13858) > OV13858_NUM_OF_LINK_FREQS - 1, > 0, > link_freq_menu_items); > - ov13858->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY; > + if (ov13858->link_freq) > + ov13858->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY; > > pixel_rate_max = link_freq_to_pixel_rate(link_freq_menu_items[0]); > pixel_rate_min =
I don't think this is right fix. If ov13858->link_freq initialization fails, we want to fail the initialization, not present half-initialized device to userland, no?
Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html [unhandled content-type:application/pgp-signature] |