mmc: Replace "enhanced_area_en" attribute by "partition_setting_completed"

Replace ext_csd "enhanced_area_en" attribute by
 "partition_setting_completed". It was used whether or
 not enhanced user area is defined and without checks of
 EXT_CSD_PARTITION_SETTING_COMPLETED bit.

Signed-off-by: Grégory Soutadé <gsoutade@neotion.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

drivers/mmc/core/mmc.c

@@ -315,7 +315,6 @@ static void mmc_manage_enhanced_area(struct mmc_card *card, u8 *ext_csd)
 		hc_wp_grp_sz =
 			ext_csd[EXT_CSD_HC_WP_GRP_SIZE];
 
-		card->ext_csd.enhanced_area_en = 1;
 		/*
 		 * calculate the enhanced data area offset, in bytes
 		 */
@@ -356,13 +355,11 @@ static void mmc_manage_gp_partitions(struct mmc_card *card, u8 *ext_csd)
 	 */
 	if (ext_csd[EXT_CSD_PARTITION_SUPPORT] &
 	    EXT_CSD_PART_SUPPORT_PART_EN) {
-		if (card->ext_csd.enhanced_area_en != 1) {
+		if (card->ext_csd.partition_setting_completed) {
 			hc_erase_grp_sz =
 				ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE];
 			hc_wp_grp_sz =
 				ext_csd[EXT_CSD_HC_WP_GRP_SIZE];
-
-			card->ext_csd.enhanced_area_en = 1;
 		}
 
 		for (idx = 0; idx < MMC_NUM_GP_PARTITION; idx++) {
@@ -489,6 +486,12 @@ static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd)
 		ext_csd[EXT_CSD_TRIM_MULT];
 	card->ext_csd.raw_partition_support = ext_csd[EXT_CSD_PARTITION_SUPPORT];
 	if (card->ext_csd.rev >= 4) {
+		if (ext_csd[EXT_CSD_PARTITION_SETTING_COMPLETED] &
+		    EXT_CSD_PART_SETTING_COMPLETED)
+			card->ext_csd.partition_setting_completed = 1;
+		else
+			card->ext_csd.partition_setting_completed = 0;
+
 		mmc_manage_enhanced_area(card, ext_csd);
 
 		mmc_manage_gp_partitions(card, ext_csd);
@@ -1348,7 +1351,7 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
 	 * If enhanced_area_en is TRUE, host needs to enable ERASE_GRP_DEF
 	 * bit.  This bit will be lost every time after a reset or power off.
 	 */
-	if (card->ext_csd.enhanced_area_en ||
+	if (card->ext_csd.partition_setting_completed ||
 	    (card->ext_csd.rev >= 3 && (host->caps2 & MMC_CAP2_HC_ERASE_SZ))) {
 		err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
 				 EXT_CSD_ERASE_GROUP_DEF, 1,

include/linux/mmc/card.h

@@ -75,7 +75,7 @@ struct mmc_ext_csd {
 	unsigned int		sec_trim_mult;	/* Secure trim multiplier  */
 	unsigned int		sec_erase_mult;	/* Secure erase multiplier */
 	unsigned int		trim_timeout;		/* In milliseconds */
-	bool			enhanced_area_en;	/* enable bit */
+	bool			partition_setting_completed;	/* enable bit */
 	unsigned long long	enhanced_area_offset;	/* Units: Byte */
 	unsigned int		enhanced_area_size;	/* Units: KB */
 	unsigned int		cache_size;		/* Units: KB */

include/linux/mmc/mmc.h

@@ -281,6 +281,7 @@ struct _mmc_csd {
 #define EXT_CSD_EXP_EVENTS_CTRL		56	/* R/W, 2 bytes */
 #define EXT_CSD_DATA_SECTOR_SIZE	61	/* R */
 #define EXT_CSD_GP_SIZE_MULT		143	/* R/W */
+#define EXT_CSD_PARTITION_SETTING_COMPLETED 155	/* R/W */
 #define EXT_CSD_PARTITION_ATTRIBUTE	156	/* R/W */
 #define EXT_CSD_PARTITION_SUPPORT	160	/* RO */
 #define EXT_CSD_HPI_MGMT		161	/* R/W */
@@ -349,6 +350,7 @@ struct _mmc_csd {
 #define EXT_CSD_PART_CONFIG_ACC_RPMB	(0x3)
 #define EXT_CSD_PART_CONFIG_ACC_GP0	(0x4)
 
+#define EXT_CSD_PART_SETTING_COMPLETED	(0x1)
 #define EXT_CSD_PART_SUPPORT_PART_EN	(0x1)
 
 #define EXT_CSD_CMD_SET_NORMAL		(1<<0)