Re: [PATCH] ALSA: emu10k1: Remove cast from memory allocation

From: Tobin C. Harding
Date: Wed Feb 22 2017 - 05:38:15 EST


On Wed, Feb 22, 2017 at 07:59:57AM +0100, Takashi Iwai wrote:
> On Wed, 22 Feb 2017 07:47:16 +0100,
> Tobin C. Harding wrote:
> >
> > Coccinelle emits multiple WARNING: casting value returned by memory allocation
> > function to (u_int32_t __user *) is useless.
> >
> > Remove unnecessary cast.
> >
> > Signed-off-by: Tobin C. Harding <me@xxxxxxxx>
>
> __user annotation requires the explicit cast.

Ok, thanks for reviewing.

Tobin.

>
>
> Takashi
>
>
> > ---
> > sound/pci/emu10k1/emufx.c | 8 ++++----
> > 1 file changed, 4 insertions(+), 4 deletions(-)
> >
> > diff --git a/sound/pci/emu10k1/emufx.c b/sound/pci/emu10k1/emufx.c
> > index 56fc47b..8a39a6f 100644
> > --- a/sound/pci/emu10k1/emufx.c
> > +++ b/sound/pci/emu10k1/emufx.c
> > @@ -1186,8 +1186,8 @@ static int _snd_emu10k1_audigy_init_efx(struct snd_emu10k1 *emu)
> > if (!icode)
> > return err;
> >
> > - icode->gpr_map = (u_int32_t __user *) kcalloc(512 + 256 + 256 + 2 * 1024,
> > - sizeof(u_int32_t), GFP_KERNEL);
> > + icode->gpr_map = kcalloc(512 + 256 + 256 + 2 * 1024,
> > + sizeof(u_int32_t), GFP_KERNEL);
> > if (!icode->gpr_map)
> > goto __err_gpr;
> > controls = kcalloc(SND_EMU10K1_GPR_CONTROLS,
> > @@ -1824,8 +1824,8 @@ static int _snd_emu10k1_init_efx(struct snd_emu10k1 *emu)
> > if (!icode)
> > return err;
> >
> > - icode->gpr_map = (u_int32_t __user *) kcalloc(256 + 160 + 160 + 2 * 512,
> > - sizeof(u_int32_t), GFP_KERNEL);
> > + icode->gpr_map = kcalloc(256 + 160 + 160 + 2 * 512,
> > + sizeof(u_int32_t), GFP_KERNEL);
> > if (!icode->gpr_map)
> > goto __err_gpr;
> >
> > --
> > 2.7.4
> >
> >

--
Tobin Harding
http://tobin.cc