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4673402ebf
It's dangerous to use empty code define.
Furthermore it lead to the following warning:
drivers/char/agp/generic.c: In function « agp_generic_destroy_page »:
drivers/char/agp/generic.c:1266:28: attention : suggest braces around empty body in an « if » statement [-Wempty-body]
So let's replace emptyness by "do {} while(0)"
Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1574324085-4338-6-git-send-email-clabbe@baylibre.com
28 lines
863 B
C
28 lines
863 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_IA64_AGP_H
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#define _ASM_IA64_AGP_H
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/*
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* IA-64 specific AGP definitions.
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*
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* Copyright (C) 2002-2003 Hewlett-Packard Co
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* David Mosberger-Tang <davidm@hpl.hp.com>
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*/
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/*
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* To avoid memory-attribute aliasing issues, we require that the AGPGART engine operate
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* in coherent mode, which lets us map the AGP memory as normal (write-back) memory
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* (unlike x86, where it gets mapped "write-coalescing").
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*/
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#define map_page_into_agp(page) do { } while (0)
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#define unmap_page_from_agp(page) do { } while (0)
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#define flush_agp_cache() mb()
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/* GATT allocation. Returns/accepts GATT kernel virtual address. */
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#define alloc_gatt_pages(order) \
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((char *)__get_free_pages(GFP_KERNEL, (order)))
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#define free_gatt_pages(table, order) \
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free_pages((unsigned long)(table), (order))
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#endif /* _ASM_IA64_AGP_H */
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