Re: [PATCH] staging: comedi: cast to (void __user *)

[Greg KH]

On Thu, Feb 18, 2021 at 11:58:40AM +0530, Atul Gopinathan wrote:
> Resolve the following sparse warning:
> drivers/staging//comedi/comedi_fops.c:2983:41: warning: incorrect type in argument 1 (different address spaces)
> drivers/staging//comedi/comedi_fops.c:2983:41:    expected void [noderef] <asn:1> *uptr
> drivers/staging//comedi/comedi_fops.c:2983:41:    got unsigned int *chanlist
> 
> cmd->chanlist is of type (unsigned int *) as defined in
> "struct comedi_cmd" in file drivers/staging/comedi/comedi.h
> 
> The function "ptr_to_compat()" expects argument of type
> (void __user *) as defined in include/linux/compat.h
> 
> Signed-off-by: Atul Gopinathan <atulgopinathan@xxxxxxxxx>
> ---
>  drivers/staging/comedi/comedi_fops.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

Is this different from your previous patch:
	https://lore.kernel.org/r/20210217165907.9777-1-atulgopinathan@xxxxxxxxx

if so, you might need a better subject line here, and for that one, as
they look alike at a quick glance.

Which one goes first?

Can you resend both of these as a patch series with better subjects as a
v2 patch set?

thanks,

greg k-h