2010-08-09 07:44:55

by David Miller

[permalink] [raw]
Subject: n2 RNG driver bogus cast removal


Kulikov, can you at least build test your patches? Casts are not
always incorrect, particularly when private cookies are "unsigned
long" as is the case here:

drivers/char/hw_random/n2-drv.c: In function ?n2rng_data_read?:
drivers/char/hw_random/n2-drv.c:390: warning: initialization makes pointer from integer without a cast

Herbert, please revert this change, thanks. And I suspect there
might be more of these hwrng driver duds that went into the tree,
it's worth checking out. :-)

Thanks.

commit 8b9cfdca9c52f7d39c3ccfac1668e31c20c9f42e
Author: Kulikov Vasiliy <[email protected]>
Date: Mon Jul 5 21:25:06 2010 +0800

hwrng: n2-drv - remove casts from void*

Remove unnesessary casts from void*.

Signed-off-by: Kulikov Vasiliy <[email protected]>
Signed-off-by: Herbert Xu <[email protected]>


2010-08-09 14:26:15

by Herbert Xu

[permalink] [raw]
Subject: Re: n2 RNG driver bogus cast removal

On Mon, Aug 09, 2010 at 12:45:14AM -0700, David Miller wrote:
>
> Kulikov, can you at least build test your patches? Casts are not
> always incorrect, particularly when private cookies are "unsigned
> long" as is the case here:
>
> drivers/char/hw_random/n2-drv.c: In function ‘n2rng_data_read’:
> drivers/char/hw_random/n2-drv.c:390: warning: initialization makes pointer from integer without a cast
>
> Herbert, please revert this change, thanks. And I suspect there
> might be more of these hwrng driver duds that went into the tree,
> it's worth checking out. :-)

Thanks Dave. I'll revert it for now.

However, it probably makes sense to change priv into a void *
as most drivers use it as a pointer instead of an integer.

Thanks,
--
Email: Herbert Xu <[email protected]>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt

2010-08-09 19:32:46

by Kulikov Vasiliy

[permalink] [raw]
Subject: Re: n2 RNG driver bogus cast removal

On Mon, Aug 09, 2010 at 00:45 -0700, David Miller wrote:
>
> Kulikov, can you at least build test your patches? Casts are not
> always incorrect, particularly when private cookies are "unsigned
> long" as is the case here:
>
> drivers/char/hw_random/n2-drv.c: In function ‘n2rng_data_read’:
> drivers/char/hw_random/n2-drv.c:390: warning: initialization makes pointer from integer without a cast
Ahh, shame on me... I'd compiled this on x86 and looked through error
log, I wrongly pointed out that there is no error at this line. As I see
now, this tactic is incorrect. I'd not do this any more, sorry for
this...

>
> Herbert, please revert this change, thanks. And I suspect there
> might be more of these hwrng driver duds that went into the tree,
> it's worth checking out. :-)
>
> Thanks.
>
> commit 8b9cfdca9c52f7d39c3ccfac1668e31c20c9f42e
> Author: Kulikov Vasiliy <[email protected]>
> Date: Mon Jul 5 21:25:06 2010 +0800
>
> hwrng: n2-drv - remove casts from void*
>
> Remove unnesessary casts from void*.
>
> Signed-off-by: Kulikov Vasiliy <[email protected]>
> Signed-off-by: Herbert Xu <[email protected]>
>