[PATCH 20/23] mtd: spi-nor: Update sr2_bit7_quad_enable()
From: <hidden>
Date: 2019-09-17 15:55:53
Also in:
linux-aspeed, linux-mediatek, lkml
Subsystem:
memory technology devices (mtd), spi nor subsystem, the rest · Maintainers:
Miquel Raynal, Richard Weinberger, Vignesh Raghavendra, Pratyush Yadav, Michael Walle, Linus Torvalds
From: Tudor Ambarus <redacted> Rename the method to spi_nor_sr2_bit7_quad_enable(). Do the read back test on all the eight bits of the Status Register, not just the QE one. Signed-off-by: Tudor Ambarus <redacted> --- drivers/mtd/spi-nor/spi-nor.c | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-)
diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c
index 8648666fb9bd..a9cdb6dbc25c 100644
--- a/drivers/mtd/spi-nor/spi-nor.c
+++ b/drivers/mtd/spi-nor/spi-nor.c@@ -1994,7 +1994,7 @@ static int spi_nor_sr2_bit1_quad_enable(struct spi_nor *nor) } /** - * sr2_bit7_quad_enable() - set QE bit in Status Register 2. + * spi_nor_sr2_bit7_quad_enable() - set QE bit in Status Register 2. * @nor: pointer to a 'struct spi_nor' * * Set the Quad Enable (QE) bit in the Status Register 2.
@@ -2005,10 +2005,11 @@ static int spi_nor_sr2_bit1_quad_enable(struct spi_nor *nor) * * Return: 0 on success, -errno otherwise. */ -static int sr2_bit7_quad_enable(struct spi_nor *nor) +static int spi_nor_sr2_bit7_quad_enable(struct spi_nor *nor) { u8 *sr2 = nor->bouncebuf; int ret; + u8 sr2_written; /* Check current Quad Enable bit value. */ ret = spi_nor_read_sr2(nor, sr2);
@@ -2025,13 +2026,15 @@ static int sr2_bit7_quad_enable(struct spi_nor *nor) if (ret) return ret; + sr2_written = *sr2; + /* Read back and check it. */ ret = spi_nor_read_sr2(nor, sr2); if (ret) return ret; - if (!(*sr2 & SR2_QUAD_EN_BIT7)) { - dev_err(nor->dev, "SR2 Quad bit not set\n"); + if (*sr2 != sr2_written) { + dev_err(nor->dev, "Read back test failed\n"); return -EIO; }
@@ -3605,7 +3608,7 @@ static int spi_nor_parse_bfpt(struct spi_nor *nor, case BFPT_DWORD15_QER_SR2_BIT7: nor->flags &= ~SNOR_F_HAS_16BIT_SR; - flash->quad_enable = sr2_bit7_quad_enable; + flash->quad_enable = spi_nor_sr2_bit7_quad_enable; break; case BFPT_DWORD15_QER_SR2_BIT1:
--
2.9.5
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