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

[Russell King - ARM Linux <linux@arm.linux.org.uk>]

On Fri, Feb 08, 2013 at 08:50:57PM +0200, Ville Syrjälä wrote:
> 	struct {
> 		uint8_t sika1;
> 		uint16_t sika2;
> 		uint32_t sika4;
> 		uint64_t sika8;

Note - you also need to check what the behaviour is with a pointer type
too - that's the one that gets ARM if you try this.  My test set on ARM
was:

int test_8(unsigned char *v, unsigned char *p)
{
        return get_user(*v, p);
}

int test_16(unsigned short *v, unsigned short *p)
{
        return get_user(*v, p);
}

int test_32(unsigned int *v, unsigned int *p)
{
        return get_user(*v, p);
}

int test_32_constp(unsigned int *v, const unsigned int *p)
{
        return get_user(*v, p);
}

int test_64(unsigned long long *v, unsigned long long *p)
{
        return get_user(*v, p);
}

int test_64_narrow(unsigned long *v, unsigned long long *p)
{
        return get_user(*v, p);
}

int test_ptr(unsigned int **v, unsigned int **p)
{
        return get_user(*v, p);
}

int test_wrong(char **v, const char **p)
{
        return get_user(*v, p);
}

All but the last should build cleanly and correctly.  The last should
issue a warning.