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authorMike Frysinger <vapier@gentoo.org>2011-04-12 02:21:31 -0400
committerMike Frysinger <vapier@gentoo.org>2011-04-12 02:30:25 -0400
commit8a07de03f07f386c29198f52b2192cf378bf2d7c (patch)
treeb85019340e7f7b27fa7809c6140d33cffd469665
parent840ff998895944fc51303cc43fdb258c4f89279c (diff)
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cmd_sf: use cmd_usage() in more places
Requires a little reworking of the code flow with sub-functions, but not a big deal. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
-rw-r--r--common/cmd_sf.c59
1 files changed, 29 insertions, 30 deletions
diff --git a/common/cmd_sf.c b/common/cmd_sf.c
index 3abc4ff..11a491d 100644
--- a/common/cmd_sf.c
+++ b/common/cmd_sf.c
@@ -70,30 +70,30 @@ static int do_spi_flash_probe(int argc, char * const argv[])
struct spi_flash *new;
if (argc < 2)
- goto usage;
+ return -1;
cs = simple_strtoul(argv[1], &endp, 0);
if (*argv[1] == 0 || (*endp != 0 && *endp != ':'))
- goto usage;
+ return -1;
if (*endp == ':') {
if (endp[1] == 0)
- goto usage;
+ return -1;
bus = cs;
cs = simple_strtoul(endp + 1, &endp, 0);
if (*endp != 0)
- goto usage;
+ return -1;
}
if (argc >= 3) {
speed = simple_strtoul(argv[2], &endp, 0);
if (*argv[2] == 0 || *endp != 0)
- goto usage;
+ return -1;
}
if (argc >= 4) {
mode = simple_strtoul(argv[3], &endp, 16);
if (*argv[3] == 0 || *endp != 0)
- goto usage;
+ return -1;
}
new = spi_flash_probe(bus, cs, speed, mode);
@@ -107,10 +107,6 @@ static int do_spi_flash_probe(int argc, char * const argv[])
flash = new;
return 0;
-
-usage:
- puts("Usage: sf probe [bus:]cs [hz] [mode]\n");
- return 1;
}
static int do_spi_flash_read_write(int argc, char * const argv[])
@@ -123,17 +119,17 @@ static int do_spi_flash_read_write(int argc, char * const argv[])
int ret;
if (argc < 4)
- goto usage;
+ return -1;
addr = simple_strtoul(argv[1], &endp, 16);
if (*argv[1] == 0 || *endp != 0)
- goto usage;
+ return -1;
offset = simple_strtoul(argv[2], &endp, 16);
if (*argv[2] == 0 || *endp != 0)
- goto usage;
+ return -1;
len = simple_strtoul(argv[3], &endp, 16);
if (*argv[3] == 0 || *endp != 0)
- goto usage;
+ return -1;
buf = map_physmem(addr, len, MAP_WRBACK);
if (!buf) {
@@ -154,10 +150,6 @@ static int do_spi_flash_read_write(int argc, char * const argv[])
}
return 0;
-
-usage:
- printf("Usage: sf %s addr offset len\n", argv[0]);
- return 1;
}
static int do_spi_flash_erase(int argc, char * const argv[])
@@ -168,15 +160,15 @@ static int do_spi_flash_erase(int argc, char * const argv[])
int ret;
if (argc < 3)
- goto usage;
+ return -1;
offset = simple_strtoul(argv[1], &endp, 16);
if (*argv[1] == 0 || *endp != 0)
- goto usage;
+ return -1;
ret = sf_parse_len_arg(argv[2], &len);
if (ret != 1)
- goto usage;
+ return -1;
ret = spi_flash_erase(flash, offset, len);
if (ret) {
@@ -185,24 +177,25 @@ static int do_spi_flash_erase(int argc, char * const argv[])
}
return 0;
-
-usage:
- puts("Usage: sf erase offset [+]len\n");
- return 1;
}
static int do_spi_flash(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
const char *cmd;
+ int ret;
/* need at least two arguments */
if (argc < 2)
goto usage;
cmd = argv[1];
+ --argc;
+ ++argv;
- if (strcmp(cmd, "probe") == 0)
- return do_spi_flash_probe(argc - 1, argv + 1);
+ if (strcmp(cmd, "probe") == 0) {
+ ret = do_spi_flash_probe(argc, argv);
+ goto done;
+ }
/* The remaining commands require a selected device */
if (!flash) {
@@ -211,9 +204,15 @@ static int do_spi_flash(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[
}
if (strcmp(cmd, "read") == 0 || strcmp(cmd, "write") == 0)
- return do_spi_flash_read_write(argc - 1, argv + 1);
- if (strcmp(cmd, "erase") == 0)
- return do_spi_flash_erase(argc - 1, argv + 1);
+ ret = do_spi_flash_read_write(argc, argv);
+ else if (strcmp(cmd, "erase") == 0)
+ ret = do_spi_flash_erase(argc, argv);
+ else
+ ret = -1;
+
+done:
+ if (ret != -1)
+ return ret;
usage:
return cmd_usage(cmdtp);