1 files changed, 5 insertions, 63 deletions

diff --git a/drivers/mtd/spi/spi_flash.c b/drivers/mtd/spi/spi_flash.c
index 94c0b0063d..2e378dc822 100644
--- a/drivers/mtd/spi/spi_flash.c
+++ b/drivers/mtd/spi/spi_flash.c
@@ -112,37 +112,6 @@ static int write_cr(struct spi_flash *flash, u8 wc)
 }
 #endif
 
-#ifdef CONFIG_SPI_FLASH_STMICRO
-static int read_evcr(struct spi_flash *flash, u8 *evcr)
-{
-	int ret;
-	const u8 cmd = CMD_READ_EVCR;
-
-	ret = spi_flash_read_common(flash, &cmd, 1, evcr, 1);
-	if (ret < 0) {
-		debug("SF: error reading EVCR\n");
-		return ret;
-	}
-
-	return 0;
-}
-
-static int write_evcr(struct spi_flash *flash, u8 evcr)
-{
-	u8 cmd;
-	int ret;
-
-	cmd = CMD_WRITE_EVCR;
-	ret = spi_flash_write_common(flash, &cmd, 1, &evcr, 1);
-	if (ret < 0) {
-		debug("SF: error while writing EVCR register\n");
-		return ret;
-	}
-
-	return 0;
-}
-#endif
-
 #ifdef CONFIG_SPI_FLASH_BAR
 static int write_bar(struct spi_flash *flash, u32 offset)
 {
@@ -894,34 +863,6 @@ static int spansion_quad_enable(struct spi_flash *flash)
 }
 #endif
 
-#ifdef CONFIG_SPI_FLASH_STMICRO
-static int micron_quad_enable(struct spi_flash *flash)
-{
-	u8 qeb_status;
-	int ret;
-
-	ret = read_evcr(flash, &qeb_status);
-	if (ret < 0)
-		return ret;
-
-	if (!(qeb_status & STATUS_QEB_MICRON))
-		return 0;
-
-	ret = write_evcr(flash, qeb_status & ~STATUS_QEB_MICRON);
-	if (ret < 0)
-		return ret;
-
-	/* read EVCR and check it */
-	ret = read_evcr(flash, &qeb_status);
-	if (!(ret >= 0 && !(qeb_status & STATUS_QEB_MICRON))) {
-		printf("SF: Micron EVCR Quad bit not clear\n");
-		return -EINVAL;
-	}
-
-	return ret;
-}
-#endif
-
 static const struct spi_flash_info *spi_flash_read_id(struct spi_flash *flash)
 {
 	int				tmp;
@@ -962,7 +903,8 @@ static int set_quad_mode(struct spi_flash *flash,
 #endif
 #ifdef CONFIG_SPI_FLASH_STMICRO
 	case SPI_FLASH_CFI_MFR_STMICRO:
-		return micron_quad_enable(flash);
+		debug("SF: QEB is volatile for %02x flash\n", JEDEC_MFR(info));
+		return 0;
 #endif
 	default:
 		printf("SF: Need set QEB func for %02x flash\n",
@@ -985,7 +927,7 @@ int spi_flash_decode_fdt(const void *blob, struct spi_flash *flash)
 		return 0;
 	}
 
-	if (flash->size != size) {
+	if (flash->size > size) {
 		debug("%s: Memory map must cover entire device\n", __func__);
 		return -1;
 	}
@@ -1000,7 +942,7 @@ int spi_flash_scan(struct spi_flash *flash)
 {
 	struct spi_slave *spi = flash->spi;
 	const struct spi_flash_info *info = NULL;
-	int ret = -1;
+	int ret;
 
 	info = spi_flash_read_id(flash);
 	if (IS_ERR_OR_NULL(info))
@@ -1166,5 +1108,5 @@ int spi_flash_scan(struct spi_flash *flash)
 	}
 #endif
 
-	return ret;
+	return 0;
 }