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MIPS: ath79: fix build problem if CONFIG_BLK_DEV_INITRD is not set 

initrd_start is defined in init/do_mounts_initrd.c, which is only
included in kernel if CONFIG_BLK_DEV_INITRD=y.

Signed-off-by: Laurent Fasnacht <l@libres.ch>
Cc: linux-mips@linux-mips.org
Cc: trivial@kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/10198/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Laurent Fasnacht 2015-05-27 19:50:00 +02:00 committed by Ralf Baechle
parent 5767b52c47
commit 556b6629c1
1 changed files with 3 additions and 0 deletions
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3
arch/mips/ath79/prom.c
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@ -1,6 +1,7 @@
/*
* Atheros AR71XX/AR724X/AR913X specific prom routines
*
* Copyright (C) 2015 Laurent Fasnacht <l@libres.ch>
* Copyright (C) 2008-2010 Gabor Juhos <juhosg@openwrt.org>
* Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
*
@ -25,12 +26,14 @@ void __init prom_init(void)
{
fw_init_cmdline();
#ifdef CONFIG_BLK_DEV_INITRD
/* Read the initrd address from the firmware environment */
initrd_start = fw_getenvl("initrd_start");
if (initrd_start) {
initrd_start = KSEG0ADDR(initrd_start);
initrd_end = initrd_start + fw_getenvl("initrd_size");
}
#endif
}
void __init prom_free_prom_memory(void)