From cc5e196e0350055e3e438d5dc2341316027c8d93 Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Thu, 5 Mar 2015 12:25:18 -0700 Subject: [PATCH] Correct map_sysmem() logic in do_mem_mw() This function does not unmap what it maps. Correct it. Signed-off-by: Simon Glass Reviewed-by: Bin Meng --- common/cmd_mem.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/common/cmd_mem.c b/common/cmd_mem.c index 3f85c1aa85..1cbf84f985 100644 --- a/common/cmd_mem.c +++ b/common/cmd_mem.c @@ -165,7 +165,7 @@ static int do_mem_mw(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) #endif ulong addr, count; int size; - void *buf; + void *buf, *start; ulong bytes; if ((argc < 3) || (argc > 4)) @@ -197,7 +197,8 @@ static int do_mem_mw(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) } bytes = size * count; - buf = map_sysmem(addr, bytes); + start = map_sysmem(addr, bytes); + buf = start; while (count-- > 0) { if (size == 4) *((u32 *)buf) = (u32)writeval; @@ -211,7 +212,7 @@ static int do_mem_mw(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) *((u8 *)buf) = (u8)writeval; buf += size; } - unmap_sysmem(buf); + unmap_sysmem(start); return 0; } -- 2.39.5