From 05241aead9b98c28476f74e7e1c5ce480ef40ac1 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Wed, 5 Nov 2014 02:29:03 -0800 Subject: mtd: spi-nor: factor out write_enable() for erase commands write_enable() was being duplicated to both m25p80.c and fsl-quadspi.c. But this should be handled within the spi-nor abstraction layer. At the same time, let's add write_disable() after erasing, so we don't leave the flash in a write-enabled state afterward. Signed-off-by: Brian Norris Acked-by: Huang Shijie --- drivers/mtd/spi-nor/spi-nor.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) (limited to 'drivers/mtd/spi-nor/spi-nor.c') diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c index 1e08976ab028..0f4f2ba16e3e 100644 --- a/drivers/mtd/spi-nor/spi-nor.c +++ b/drivers/mtd/spi-nor/spi-nor.c @@ -265,9 +265,6 @@ static int erase_chip(struct spi_nor *nor) { dev_dbg(nor->dev, " %lldKiB\n", (long long)(nor->mtd->size >> 10)); - /* Send write enable, then erase commands. */ - write_enable(nor); - return nor->write_reg(nor, SPINOR_OP_CHIP_ERASE, NULL, 0, 0); } @@ -322,6 +319,8 @@ static int spi_nor_erase(struct mtd_info *mtd, struct erase_info *instr) /* whole-chip erase? */ if (len == mtd->size) { + write_enable(nor); + if (erase_chip(nor)) { ret = -EIO; goto erase_err; @@ -339,6 +338,8 @@ static int spi_nor_erase(struct mtd_info *mtd, struct erase_info *instr) /* "sector"-at-a-time erase */ } else { while (len) { + write_enable(nor); + if (nor->erase(nor, addr)) { ret = -EIO; goto erase_err; @@ -353,6 +354,8 @@ static int spi_nor_erase(struct mtd_info *mtd, struct erase_info *instr) } } + write_disable(nor); + spi_nor_unlock_and_unprep(nor, SPI_NOR_OPS_ERASE); instr->state = MTD_ERASE_DONE; -- cgit v1.2.3-59-g8ed1b