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efi: avoid error message when booting under Xen

efifb_probe() will issue an error message in case the kernel is bootedas Xen dom0 from UEFI as EFI_MEMMAP won't be set in this case. Avoidthat message by calling efi_mem_desc_lookup() only if EFI_MEMMAP is set.Fixes:38ac028 ("fbdev/efifb: Honour UEFI memory map attributes when mapping the FB")Signed-off-by: Juergen Gross <jgross@suse.com>Acked-by: Ard Biesheuvel <ardb@kernel.org>Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>Signed-off-by: Juergen Gross <jgross@suse.com>

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drivers/video/fbdev
- efifb.c

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`‎drivers/video/fbdev/efifb.c‎`

Lines changed: 1 addition & 1 deletion

Original file line number	Diff line number	Diff line change
`@@ -453,7 +453,7 @@ static int efifb_probe(struct platform_device *dev)`
`453`	`453`	`info->apertures->ranges[0].base=efifb_fix.smem_start;`
`454`	`454`	`info->apertures->ranges[0].size=size_remap;`
`455`	`455`
`456`		`-if (efi_enabled(EFI_BOOT)&&`
	`456`	`+if (efi_enabled(EFI_MEMMAP)&&`
`457`	`457`	`!efi_mem_desc_lookup(efifb_fix.smem_start,&md)) {`
`458`	`458`	`if ((efifb_fix.smem_start+efifb_fix.smem_len)>`
`459`	`459`	`(md.phys_addr+ (md.num_pages <<EFI_PAGE_SHIFT))) {`

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Commit6163a98

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`‎drivers/video/fbdev/efifb.c‎`

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