Re: sound/pci/asihpi/hpioctl.c:125:6: warning: cast to pointer frominteger of different size

From: H. Peter Anvin
Date: Thu Feb 07 2013 - 21:19:43 EST


On 02/07/2013 03:45 PM, kbuild test robot wrote:
> tree: git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86/mm
> head: 6fcddf474ae1c8e2fb5f14c850c8aa018e7a5034
> commit: 6fcddf474ae1c8e2fb5f14c850c8aa018e7a5034 x86-32: Add support for 64bit get_user()
> date: 2 hours ago
> config: make ARCH=i386 allmodconfig
>
> All warnings:
>
> sound/pci/asihpi/hpioctl.c: In function 'asihpi_hpi_ioctl':
>>> sound/pci/asihpi/hpioctl.c:125:6: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
>>> sound/pci/asihpi/hpioctl.c:126:6: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
> --
> net/atm/resources.c: In function 'atm_dev_ioctl':
>>> net/atm/resources.c:223:8: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
>>> net/atm/resources.c:274:7: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
> --

[... and so on ...]

Now I remember this problem. I believe I discussed it with rmk in the
context of ARM, too. Russell, did we ever find any way to implement
8-byte get_user() on 32 bits without massive warning spewage?

-hpa


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