[patch 2/3] Staging: sst: more dereferencing user pointers
Dan Carpenter
error27 at gmail.com
Thu Oct 21 18:01:04 UTC 2010
On Thu, Oct 21, 2010 at 07:45:45PM +0530, Koul, Vinod wrote:
> > case _IOC_NR(SNDRV_SST_STREAM_SET_PARAMS): {
> > - struct snd_sst_params *str_param = (struct snd_sst_params *)arg;
> > + struct snd_sst_params str_param;
> Now this is a struct...
> >
> [snip]
> > +
> > if (!str_id) {
> So this becomes bogus check, can be removed :-)
The check for str_id? That comes from near the start of the function
and it's still needed.
> >
> > + retval = copy_to_user(dest, &retval, sizeof(__u32));
> > if (retval)
> > retval = -EFAULT;
> Trivial but this can be changed to
> if (copy_to_user())
> retval = -EFAULT;
>
retval is the str_id here so you'd need an else statement as well.
else
retval = 0;
I can send a separate patch for this.
> Overall its good, tested it as well,
Thanks for that.
regards,
dan carpenter
More information about the devel
mailing list