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Correct map_sysmem() logic in do_mem_mw() 

This function does not unmap what it maps. Correct it.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Simon Glass 2015-03-05 12:25:18 -07:00
parent 161d2e4e5b
commit cc5e196e03
1 changed files with 4 additions and 3 deletions
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7
common/cmd_mem.c
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@ -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;
}