From 85a1c77fb8c4ae91d203fd0e8c3b54b50662d3c6 Mon Sep 17 00:00:00 2001 From: Michael Ellerman Date: Tue, 10 Nov 2015 16:08:33 +1100 Subject: [PATCH] of: Print rather than WARN'ing when overlap check fails __rmem_check_for_overlap() is called very early in boot, and on some powerpc systems it's not safe to call WARN that early in boot. If the overlap check fails the system will oops instead of printing a warning. Furthermore because it's so early in boot the console is not up and the user doesn't see the oops, they just get a dead system. Fix it by printing an error instead of calling WARN. Fixes: ae1add247bf8 ("of: Check for overlap in reserved memory regions") Signed-off-by: Michael Ellerman Signed-off-by: Rob Herring --- drivers/of/of_reserved_mem.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/drivers/of/of_reserved_mem.c b/drivers/of/of_reserved_mem.c index 62f467b8ccae..49703916a30e 100644 --- a/drivers/of/of_reserved_mem.c +++ b/drivers/of/of_reserved_mem.c @@ -226,10 +226,9 @@ static void __init __rmem_check_for_overlap(void) this_end = this->base + this->size; next_end = next->base + next->size; - WARN(1, - "Reserved memory: OVERLAP DETECTED!\n%s (%pa--%pa) overlaps with %s (%pa--%pa)\n", - this->name, &this->base, &this_end, - next->name, &next->base, &next_end); + pr_err("Reserved memory: OVERLAP DETECTED!\n%s (%pa--%pa) overlaps with %s (%pa--%pa)\n", + this->name, &this->base, &this_end, + next->name, &next->base, &next_end); } } }