[U-Boot] [PATCH 5/7 V3] mmc: Enhance mmcinfo command

[Haijun Zhang]

Once mmc initialization was faild has_init should be set to 0,
prepard for the next initialization to recover from error.

Once mmcinfo command failed, error should be report instead of printing
incorrect mmc device information.

Error log:
=> mmcinfo
Device: FSL_SDHC
Manufacturer ID: 0
OEM: 0
Name: Tran Speed: 0
Rd Block Len: 0
MMC version 0.0
High Capacity: No
Capacity: 0 Bytes
Bus Width: 1-bit
=> mmcinfo
Device: FSL_SDHC
Manufacturer ID: 0
OEM: 0
Name: Tran Speed: 0
Rd Block Len: 0
MMC version 0.0
High Capacity: No
Capacity: 0 Bytes
Bus Width: 1-bit

Signed-off-by: Haijun Zhang <haijun.zhang at freescale.com>
---
changes for V3:
	- Remove the error printings.

 common/cmd_mmc.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/common/cmd_mmc.c b/common/cmd_mmc.c
index c124df0..46443c8 100644
--- a/common/cmd_mmc.c
+++ b/common/cmd_mmc.c
@@ -115,7 +115,8 @@ static int do_mmcinfo(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 	mmc = find_mmc_device(curr_device);
 
 	if (mmc) {
-		mmc_init(mmc);
+		if (mmc_init(mmc))
+			return 1;
 
 		print_mmcinfo(mmc);
 		return 0;
@@ -191,9 +192,10 @@ static int do_mmcops(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 
 		mmc->has_init = 0;
 
-		if (mmc_init(mmc))
+		if (mmc_init(mmc)) {
+			mmc->has_init = 0;
 			return 1;
-		else
+		} else
 			return 0;
 	} else if (strncmp(argv[1], "part", 4) == 0) {
 		block_dev_desc_t *mmc_dev;
-- 
1.8.4.1