powerpc: use memparse() for mem= command line parsing

Use memparse() instead of our own code for handling the parsing of mem=

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

1 files changed, 1 insertions, 13 deletions

diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index 5a24415a2e3c..95d15eb5c03f 100644
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -1030,25 +1030,13 @@ static int __init early_init_dt_scan_chosen(unsigned long node,
 
         if (strstr(cmd_line, "mem=")) {
                 char *p, *q;
-                unsigned long maxmem = 0;
 
                 for (q = cmd_line; (p = strstr(q, "mem=")) != 0; ) {
                         q = p + 4;
                         if (p > cmd_line && p[-1] != ' ')
                                 continue;
-                        maxmem = simple_strtoul(q, &q, 0);
-                        if (*q == 'k' || *q == 'K') {
-                                maxmem <<= 10;
-                                ++q;
-                        } else if (*q == 'm' || *q == 'M') {
-                                maxmem <<= 20;
-                                ++q;
-                        } else if (*q == 'g' || *q == 'G') {
-                                maxmem <<= 30;
-                                ++q;
-                        }
+                        memory_limit = memparse(q, &q);
                 }
-                memory_limit = maxmem;
         }
 
         /* break now */