[PATCH] fix system_state checking in early_ioremap

From: Dave Young
Date: Fri Dec 01 2017 - 22:34:45 EST


Since below commit earlyprintk=efi,keep does not work any more with a warning
in mm/early_ioremap.c: WARN_ON(system_state >= SYSTEM_RUNNING):
commit 69a78ff226fe ("init: Introduce SYSTEM_SCHEDULING state")

Reason is the the original assumption is SYSTEM_BOOTING equal to
system_state < SYSTEM_RUNNING. But with commit 69a78ff226fe it is not true
any more. Change the WARN_ON to check system_state >= SYSTEM_RUNNING instead.

Signed-off-by: Dave Young <dyoung@xxxxxxxxxx>
---
mm/early_ioremap.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- linux-x86.orig/mm/early_ioremap.c
+++ linux-x86/mm/early_ioremap.c
@@ -111,7 +111,7 @@ __early_ioremap(resource_size_t phys_add
enum fixed_addresses idx;
int i, slot;

- WARN_ON(system_state != SYSTEM_BOOTING);
+ WARN_ON(system_state >= SYSTEM_RUNNING);

slot = -1;
for (i = 0; i < FIX_BTMAPS_SLOTS; i++) {