In drivers/pcmcia/cardbus.c, the following statement

         memcpy_fromio(ptr, s->cb_cis_virt + addr, len);

generates the warning

   CC [M]  drivers/pcmcia/cardbus.o
include/asm/io_32.h: In function ‘memcpy_fromio’:
include/asm/io_32.h:151: warning: passing argument 2 of ‘__memcpy’ 
discards qualifiers from pointer target type

s->cb_cis_virt is "void __iomem" and addr is uint.

What cast does argument 2 need to silence the warning?

Thanks,

Larry
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memcpy_fromio takes a (const volatile void __iomem *) for the 
src address.


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Changing it to

memcpy_fromio(ptr, (const volatile void __iomem *)(s->cb_cis_virt + 
addr), len);

memcpy_fromio(ptr, (const volatile void __iomem *)s->cb_cis_virt + 
addr, len);

memcpy_fromio(ptr, (volatile void __iomem *)(s->cb_cis_virt + addr), len);

or

memcpy_fromio(ptr, (volatile void __iomem *)s->cb_cis_virt + addr, len);

makes no difference.

Thanks,

Larry
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The cast needs to be in memcpy_fromio, but there is already one, so why
do you get a warning in the first place?

Andreas.

-- 
Andreas Schwab, SuSE Labs, schwab@suse.de
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
PGP key fingerprint = 58CA 54C7 6D53 942B 1756  01D3 44D5 214B 8276 4ED5
"And now for something completely different."
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