Messages in this thread | | | Subject | Re: [PATCH v2] staging: comedi: comedi_fops.c: added casts to get rid of sparse warnings | From | Ian Abbott <> | Date | Thu, 16 Jul 2020 12:15:21 +0100 |
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On 15/07/2020 12:48, B K Karthik wrote: > fixed sparse warnings by adding a cast in assignment from > void [noderef] __user * to unsigned int __force * > and a reverse cast in argument from > void [noderef] __user * to unsigned int __user * .
Minor quibble: the reverse cast is actually from unsigned int * to unsigned int __user * .
> > Signed-off-by: B K Karthik <karthik.bk2000@live.com> > --- > drivers/staging/comedi/comedi_fops.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/drivers/staging/comedi/comedi_fops.c b/drivers/staging/comedi/comedi_fops.c > index 3f70e5dfac39..9cdc1e8a022d 100644 > --- a/drivers/staging/comedi/comedi_fops.c > +++ b/drivers/staging/comedi/comedi_fops.c > @@ -2956,7 +2956,7 @@ static int get_compat_cmd(struct comedi_cmd *cmd, > cmd->scan_end_arg = v32.scan_end_arg; > cmd->stop_src = v32.stop_src; > cmd->stop_arg = v32.stop_arg; > - cmd->chanlist = compat_ptr(v32.chanlist); > + cmd->chanlist = (unsigned int __force *)compat_ptr(v32.chanlist); > cmd->chanlist_len = v32.chanlist_len; > cmd->data = compat_ptr(v32.data); > cmd->data_len = v32.data_len; > @@ -2983,7 +2983,7 @@ static int put_compat_cmd(struct comedi32_cmd_struct __user *cmd32, > v32.stop_src = cmd->stop_src; > v32.stop_arg = cmd->stop_arg; > /* Assume chanlist pointer is unchanged. */ > - v32.chanlist = ptr_to_compat(cmd->chanlist); > + v32.chanlist = ptr_to_compat((unsigned int __user *)cmd->chanlist); > v32.chanlist_len = cmd->chanlist_len; > v32.data = ptr_to_compat(cmd->data); > v32.data_len = cmd->data_len; >
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
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