On 07-02-10 07:02 Michael Buesch wrote:
> On Saturday 10 February 2007 02:27, Daniel Drake wrote:
> > Robert P.J. Day's recent commit ("getting rid of all casts of k[cmz]alloc()
> > calls") introduced a sparse warning for zd1211rw, related to our type-checking
> > of addresses.
> >
> > zd_chip.c:116:15: warning: implicit cast to nocast type
> >
> > This patch readds the type cast, it is correct.
> >
> > Signed-off-by: Daniel Drake <dsd@xxxxxxxxxx>
> >
> > Index: linux/drivers/net/wireless/zd1211rw/zd_chip.c
> > ===================================================================
> > --- linux.orig/drivers/net/wireless/zd1211rw/zd_chip.c
> > +++ linux/drivers/net/wireless/zd1211rw/zd_chip.c
> > @@ -113,7 +113,7 @@ int zd_ioread32v_locked(struct zd_chip *
> >
> > /* Allocate a single memory block for values and addresses. */
> > count16 = 2*count;
> > - a16 = kmalloc(count16 * (sizeof(zd_addr_t) + sizeof(u16)),
> > + a16 = (zd_addr_t *) kmalloc(count16 * (sizeof(zd_addr_t) + sizeof(u16)),
> > GFP_NOFS);
>
> Unrelated, but I am wondering since quite some time why you pass GFP_NOFS here.
> Any special reason? I think in general there is no good reason for code outside
> of the VFS to use this flag.
> IMHO you should pass either GFP_ATOMIC or GFP_KERNEL.
Michael,
you are right. The theory has been to prevent the NFS operations
while being in the kernel. But no driver in drivers/net is using
it. I will exchange it by GFP_KERNEL, this code is protected by a
mutex and is not atomic.
Ciao,
Uli
--
Uli Kunitz
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