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Open Source and information security mailing list archives
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Date: Sun, 24 Aug 2008 18:31:44 +0300 From: Benny Halevy <bhalevy@...asas.com> To: Larry Finger <Larry.Finger@...inger.net> CC: LKML <linux-kernel@...r.kernel.org>, Dominik Brodowski <linux@...inikbrodowski.net> Subject: Re: Help with compiler warning On Aug. 24, 2008, 18:29 +0300, Benny Halevy <bhalevy@...asas.com> wrote: > On Aug. 22, 2008, 4:36 +0300, Larry Finger <Larry.Finger@...inger.net> wrote: >> 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? > > memcpy_fromio takes a (const volatile void __iomem *) for the > src address. So the culprit could be the volatile qualifier... > > Benny > >> Thanks, >> >> Larry >> -- >> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in >> the body of a message to majordomo@...r.kernel.org >> More majordomo info at http://vger.kernel.org/majordomo-info.html >> Please read the FAQ at http://www.tux.org/lkml/ > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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