From: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Date: Fri, 30 Mar 2018 12:09:01 +0000 (+0530)
Subject: powerpc/mm/radix: Parse disable_radix commandline correctly.
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=cec4e9b28ffbcb9ce04b9e33946c505e5ad7a295;p=linux.git

powerpc/mm/radix: Parse disable_radix commandline correctly.

kernel parameter disable_radix takes different options
disable_radix=yes|no|1|0 or just disable_radix. When using the later
format we get below error.

 `Malformed early option 'disable_radix'`

Fixes: 1fd6c0220710 ("powerpc/mm: Add a CONFIG option to choose if radix is used by default")
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
---

diff --git a/arch/powerpc/mm/init_64.c b/arch/powerpc/mm/init_64.c
index 63470b06c5029..51ce091914f97 100644
--- a/arch/powerpc/mm/init_64.c
+++ b/arch/powerpc/mm/init_64.c
@@ -366,7 +366,7 @@ static int __init parse_disable_radix(char *p)
 {
 	bool val;
 
-	if (strlen(p) == 0)
+	if (!p)
 		val = true;
 	else if (kstrtobool(p, &val))
 		return -EINVAL;