From: York Sun <yorksun@freescale.com>
Date: Mon, 8 Oct 2012 07:44:10 +0000 (+0000)
Subject: powerpc/mpc85xx: check number of cores
X-Git-Tag: v2013.01-rc1~90^2~29
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=2f1712b275af3ed960b92cd1ed9b99d23c4919a5;p=kernel%2Fu-boot.git

powerpc/mpc85xx: check number of cores

Panic if the number of cores is more than CONFIG_MAX_CPUS because it will
surely overflow gd structure.

Signed-off-by: York Sun <yorksun@freescale.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
---

diff --git a/arch/powerpc/cpu/mpc85xx/cpu.c b/arch/powerpc/cpu/mpc85xx/cpu.c
index 26fc84c..40cce1d 100644
--- a/arch/powerpc/cpu/mpc85xx/cpu.c
+++ b/arch/powerpc/cpu/mpc85xx/cpu.c
@@ -127,6 +127,11 @@ int checkcpu (void)
 
 	printf(", Version: %d.%d, (0x%08x)\n", major, minor, pvr);
 
+	if (nr_cores > CONFIG_MAX_CPUS) {
+		panic("\nUnexpected number of cores: %d, max is %d\n",
+			nr_cores, CONFIG_MAX_CPUS);
+	}
+
 	get_sys_info(&sysinfo);
 
 	puts("Clock Configuration:");