[U-Boot] [PATCH v3] ARM: imx: Fix incorrect usage of CONFIG_SYS_MMC_ENV_PART

[Fabio Estevam]

From: Fabio Estevam <fabio.estevam at freescale.com>

When running the "save" command several times on a mx6qsabresd we see:

U-Boot > save
Saving Environment to MMC...
Writing to MMC(1)... done
U-Boot > save
Saving Environment to MMC...
MMC partition switch failed
U-Boot > save
Saving Environment to MMC...
Writing to MMC(1)... done
U-Boot > save
Saving Environment to MMC...
MMC partition switch failed
U-Boot > save
Saving Environment to MMC...
Writing to MMC(1)... done
U-Boot > save
Saving Environment to MMC...
MMC partition switch failed

This issue is caused by the incorrect usage of CONFIG_SYS_MMC_ENV_PART.

CONFIG_SYS_MMC_ENV_PART should be used to specify the mmc partition that stores
the environment variables.

On some imx boards it is been incorrectly used to pass the partition of kernel
and dtb files for the 'mmcpart' script variable.

Remove the CONFIG_SYS_MMC_ENV_PART usage and configure the 'mmcpart' variable
directly.

Reported-by: Jason Liu <r64343 at freescale.com>
Signed-off-by: Fabio Estevam <fabio.estevam at freescale.com>
---
Changes since v2:
- Fix in the config files by removing CONFIG_SYS_MMC_ENV_PART
Changes since v1:
- Do the change inside the mmc core
 include/configs/mx53ard.h          | 3 +--
 include/configs/mx6qsabre_common.h | 2 +-
 include/configs/mx6qsabreauto.h    | 1 -
 include/configs/mx6qsabresd.h      | 1 -
 include/configs/wandboard.h        | 3 +--
 5 files changed, 3 insertions(+), 7 deletions(-)

diff --git a/include/configs/mx53ard.h b/include/configs/mx53ard.h
index 41974b1..b0a965f 100644
--- a/include/configs/mx53ard.h
+++ b/include/configs/mx53ard.h
@@ -118,7 +118,7 @@
 	"boot_fdt=try\0" \
 	"ip_dyn=yes\0" \
 	"mmcdev=" __stringify(CONFIG_SYS_MMC_ENV_DEV) "\0" \
-	"mmcpart=" __stringify(CONFIG_SYS_MMC_ENV_PART) "\0" \
+	"mmcpart=2\0" \
 	"mmcroot=/dev/mmcblk0p3 rootwait rw\0" \
 	"update_sd_firmware_filename=u-boot.imx\0" \
 	"update_sd_firmware=" \
@@ -240,7 +240,6 @@
 #define CONFIG_ENV_SIZE        (8 * 1024)
 #define CONFIG_ENV_IS_IN_MMC
 #define CONFIG_SYS_MMC_ENV_DEV	0
-#define CONFIG_SYS_MMC_ENV_PART	2
 
 #define CONFIG_OF_LIBFDT
 
diff --git a/include/configs/mx6qsabre_common.h b/include/configs/mx6qsabre_common.h
index 7298a76..bfaa420 100644
--- a/include/configs/mx6qsabre_common.h
+++ b/include/configs/mx6qsabre_common.h
@@ -97,7 +97,7 @@
 	"fdt_high=0xffffffff\0"	  \
 	"initrd_high=0xffffffff\0" \
 	"mmcdev=" __stringify(CONFIG_SYS_MMC_ENV_DEV) "\0" \
-	"mmcpart=" __stringify(CONFIG_SYS_MMC_ENV_PART) "\0" \
+	"mmcpart=1\0" \
 	"mmcroot=" CONFIG_MMCROOT " rootwait rw\0" \
 	"update_sd_firmware=" \
 		"if test ${ip_dyn} = yes; then " \
diff --git a/include/configs/mx6qsabreauto.h b/include/configs/mx6qsabreauto.h
index 1583c11..f2ff3e1 100644
--- a/include/configs/mx6qsabreauto.h
+++ b/include/configs/mx6qsabreauto.h
@@ -35,7 +35,6 @@
 #define CONFIG_SYS_FSL_USDHC_NUM	2
 #if defined(CONFIG_ENV_IS_IN_MMC)
 #define CONFIG_SYS_MMC_ENV_DEV		0
-#define CONFIG_SYS_MMC_ENV_PART		1	/* Boot partition 1 */
 #endif
 
 #endif                         /* __MX6QSABREAUTO_CONFIG_H */
diff --git a/include/configs/mx6qsabresd.h b/include/configs/mx6qsabresd.h
index 3b8d752..44f07cb 100644
--- a/include/configs/mx6qsabresd.h
+++ b/include/configs/mx6qsabresd.h
@@ -29,7 +29,6 @@
 #define CONFIG_SYS_FSL_USDHC_NUM	3
 #if defined(CONFIG_ENV_IS_IN_MMC)
 #define CONFIG_SYS_MMC_ENV_DEV		1	/* SDHC3 */
-#define CONFIG_SYS_MMC_ENV_PART		1	/* Boot partition 1 */
 #endif
 
 #endif                         /* __MX6QSABRESD_CONFIG_H */
diff --git a/include/configs/wandboard.h b/include/configs/wandboard.h
index d4ac086..34a8f15 100644
--- a/include/configs/wandboard.h
+++ b/include/configs/wandboard.h
@@ -116,7 +116,7 @@
 	"boot_fdt=try\0" \
 	"ip_dyn=yes\0" \
 	"mmcdev=" __stringify(CONFIG_SYS_MMC_ENV_DEV) "\0" \
-	"mmcpart=" __stringify(CONFIG_SYS_MMC_ENV_PART) "\0" \
+	"mmcpart=2\0" \
 	"mmcroot=/dev/mmcblk0p3 rootwait rw\0" \
 	"update_sd_firmware_filename=u-boot.imx\0" \
 	"update_sd_firmware=" \
@@ -230,7 +230,6 @@
 #define CONFIG_ENV_IS_IN_MMC
 #define CONFIG_ENV_OFFSET		(6 * 64 * 1024)
 #define CONFIG_SYS_MMC_ENV_DEV		0
-#define CONFIG_SYS_MMC_ENV_PART		2
 
 #define CONFIG_OF_LIBFDT
 #define CONFIG_CMD_BOOTZ
-- 
1.8.1.2
ts