[PATCH v2 u-boot] cmd: mmc: Return CMD_RET_* from commands

[Pali Rohár]

Numeric return values may cause strange errors line:
exit not allowed from main input shell.

Signed-off-by: Pali Rohár <p...@kernel.org>
---
Rename r to ret.
---
 cmd/mmc.c | 18 +++++++++++++-----
 1 file changed, 13 insertions(+), 5 deletions(-)

diff --git a/cmd/mmc.c b/cmd/mmc.c
index c79d9407986d..539d3e0bf768 100644
--- a/cmd/mmc.c
+++ b/cmd/mmc.c
@@ -175,7 +175,7 @@ static int do_mmcinfo(struct cmd_tbl *cmdtp, int flag, int 
argc,
                        curr_device = 0;
                else {
                        puts("No MMC device available\n");
-                       return 1;
+                       return CMD_RET_FAILURE;
                }
        }
 
@@ -927,7 +927,7 @@ static int mmc_partconf_print(struct mmc *mmc, const char 
*varname)
 static int do_mmc_partconf(struct cmd_tbl *cmdtp, int flag,
                           int argc, char *const argv[])
 {
-       int dev;
+       int ret, dev;
        struct mmc *mmc;
        u8 ack, part_num, access;
 
@@ -953,13 +953,17 @@ static int do_mmc_partconf(struct cmd_tbl *cmdtp, int 
flag,
        access = dectoul(argv[4], NULL);
 
        /* acknowledge to be sent during boot operation */
-       return mmc_set_part_conf(mmc, ack, part_num, access);
+       ret = mmc_set_part_conf(mmc, ack, part_num, access);
+       if (ret != 0)
+               return CMD_RET_FAILURE;
+
+       return CMD_RET_SUCCESS;
 }
 
 static int do_mmc_rst_func(struct cmd_tbl *cmdtp, int flag,
                           int argc, char *const argv[])
 {
-       int dev;
+       int ret, dev;
        struct mmc *mmc;
        u8 enable;
 
@@ -988,7 +992,11 @@ static int do_mmc_rst_func(struct cmd_tbl *cmdtp, int flag,
                return CMD_RET_FAILURE;
        }
 
-       return mmc_set_rst_n_function(mmc, enable);
+       ret = mmc_set_rst_n_function(mmc, enable);
+       if (ret != 0)
+               return CMD_RET_FAILURE;
+
+       return CMD_RET_SUCCESS;
 }
 #endif
 static int do_mmc_setdsr(struct cmd_tbl *cmdtp, int flag,
-- 
2.20.1