ARM: 9190/1: kdump: add invalid input check for 'crashkernel=0'

Add invalid input check expression when 'crashkernel=0' is specified
running kdump.

Signed-off-by: Austin Kim <austindh.kim@gmail.com>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>

diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index 284a80c0b6e1046ff320c98b013714f2b1bfa2d8..7646d3ade56cecb6d9f949804b8bb60501198918 100644 (file)
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -1004,7 +1004,8 @@ static void __init reserve_crashkernel(void)
        total_mem = get_total_mem();
        ret = parse_crashkernel(boot_command_line, total_mem,
                                &crash_size, &crash_base);
-       if (ret)
+       /* invalid value specified or crashkernel=0 */
+       if (ret || !crash_size)
                return;
 
        if (crash_base <= 0) {