Messages in this thread Patch in this message | | | Date | Sun, 3 Nov 2013 20:16:47 +0800 | From | Dave Young <> | Subject | [PATCH] efi earlyprintk fix |
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there's below one line shift problem:
ACPI=0xdabfe000 ACPI 2.0=0xdabfe014 SMBIOS=0xdaa9e000 [ 0.000000] efi:
In fact check efi_y and the lfb_height should be compared at the begin of the loop of early_efi_write
Signed-off-by: Dave Young <dyoung@redhat.com> --- arch/x86/platform/efi/early_printk.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- linux-2.6.orig/arch/x86/platform/efi/early_printk.c +++ linux-2.6/arch/x86/platform/efi/early_printk.c @@ -106,6 +106,15 @@ early_efi_write(struct console *con, con if (count > linemax) count = linemax; + if (efi_y + font->height >= si->lfb_height) { + u32 i; + + efi_y -= font->height; + early_efi_scroll_up(); + + for (i = 0; i < font->height; i++) + early_efi_clear_scanline(efi_y + i); + } for (h = 0; h < font->height; h++) { unsigned int n, x; @@ -142,15 +151,6 @@ early_efi_write(struct console *con, con efi_y += font->height; } - if (efi_y + font->height >= si->lfb_height) { - u32 i; - - efi_y -= font->height; - early_efi_scroll_up(); - - for (i = 0; i < font->height; i++) - early_efi_clear_scanline(efi_y + i); - } } }
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