x86: i915 needs pgprot_writecombine() and is_io_mapping_possible()
Impact: build fix Theodore Ts reported that the i915 driver needs these symbols: ERROR: "pgprot_writecombine" [drivers/gpu/drm/i915/i915.ko] undefined! ERROR: "is_io_mapping_possible" [drivers/gpu/drm/i915/i915.ko] undefined! Reported-by: Theodore Ts'o <tytso@mit.edu> wrote: Signed-off-by: Ingo Molnar <mingo@elte.hu>
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@ -20,23 +20,16 @@
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#include <asm/pat.h>
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#include <linux/module.h>
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#ifdef CONFIG_X86_PAE
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int
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is_io_mapping_possible(resource_size_t base, unsigned long size)
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{
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return 1;
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}
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#else
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int
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is_io_mapping_possible(resource_size_t base, unsigned long size)
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int is_io_mapping_possible(resource_size_t base, unsigned long size)
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{
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#ifndef CONFIG_X86_PAE
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/* There is no way to map greater than 1 << 32 address without PAE */
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if (base + size > 0x100000000ULL)
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return 0;
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#endif
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return 1;
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}
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#endif
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EXPORT_SYMBOL_GPL(is_io_mapping_possible);
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/* Map 'pfn' using fixed map 'type' and protections 'prot'
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*/
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@ -11,6 +11,7 @@
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#include <linux/bootmem.h>
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#include <linux/debugfs.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/gfp.h>
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#include <linux/mm.h>
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#include <linux/fs.h>
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@ -868,6 +869,7 @@ pgprot_t pgprot_writecombine(pgprot_t prot)
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else
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return pgprot_noncached(prot);
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}
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EXPORT_SYMBOL_GPL(pgprot_writecombine);
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#if defined(CONFIG_DEBUG_FS) && defined(CONFIG_X86_PAT)
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