On 22/06/15 16:33, Geliang Tang wrote:
This patch fixes the following sparse warning:drivers/staging/comedi/comedi_compat32.c:205:16: warning: cast removes address space of expression Signed-off-by: Geliang Tang <geliangt...@163.com> --- Changes in v3: - fix the 80 character line limit. Changes in v2: - compat_ptr() is substituted by 'unsigned long'. --- drivers/staging/comedi/comedi_compat32.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/staging/comedi/comedi_compat32.c b/drivers/staging/comedi/comedi_compat32.c index 2584824..f356386 100644 --- a/drivers/staging/comedi/comedi_compat32.c +++ b/drivers/staging/comedi/comedi_compat32.c @@ -202,7 +202,8 @@ static int get_compat_cmd(struct comedi_cmd __user *cmd, err |= __get_user(temp.uint, &cmd32->stop_arg); err |= __put_user(temp.uint, &cmd->stop_arg); err |= __get_user(temp.uptr, &cmd32->chanlist); - err |= __put_user(compat_ptr(temp.uptr), &cmd->chanlist); + err |= __put_user((unsigned int __force *)compat_ptr(temp.uptr), + &cmd->chanlist); err |= __get_user(temp.uint, &cmd32->chanlist_len); err |= __put_user(temp.uint, &cmd->chanlist_len); err |= __get_user(temp.uptr, &cmd32->data);
Looks okay now apart from it being ugly, but that can't be helped since comedi uses that chanlist member for both user and kernel addresses!
Reviewed-by: Ian Abbott <abbo...@mev.co.uk> -- -=( Ian Abbott @ MEV Ltd. E-mail: <abbo...@mev.co.uk> )=- -=( Web: http://www.mev.co.uk/ )=- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in Please read the FAQ at http://www.tux.org/lkml/
