Hi Colin, On Tue, Sep 1, 2015 at 12:21 PM, Colin King <colin.k...@canonical.com> wrote: > On the unlikely event that drv is null, the current code will > perform a null pointer dereference with it when printing a dev_dbg > message. Instead, the BUG_ON check on drv should be performed > before we emit the dev_dbg message.
What about just removing the BUG_ON()? The system will crash anyway, providing a backtrace. > Signed-off-by: Colin Ian King <colin.k...@canonical.com> > --- > drivers/ps3/ps3-vuart.c | 3 +-- > 1 file changed, 1 insertion(+), 2 deletions(-) > > diff --git a/drivers/ps3/ps3-vuart.c b/drivers/ps3/ps3-vuart.c > index d6db822..632701a 100644 > --- a/drivers/ps3/ps3-vuart.c > +++ b/drivers/ps3/ps3-vuart.c > @@ -1000,12 +1000,11 @@ static int ps3_vuart_probe(struct > ps3_system_bus_device *dev) > dev_dbg(&dev->core, "%s:%d\n", __func__, __LINE__); > > drv = ps3_system_bus_dev_to_vuart_drv(dev); > + BUG_ON(!drv); > > dev_dbg(&dev->core, "%s:%d: (%s)\n", __func__, __LINE__, > drv->core.core.name); > > - BUG_ON(!drv); > - > if (dev->port_number >= PORT_COUNT) { > BUG(); > return -EINVAL; Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- ge...@linux-m68k.org In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev