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From: Michael Walle <michael@walle.cc>
To: linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org
Cc: Richard Weinberger <richard@nod.at>,
	Michael Walle <michael@walle.cc>,
	Miquel Raynal <miquel.raynal@bootlin.com>,
	Vignesh Raghavendra <vigneshr@ti.com>,
	Tudor Ambarus <tudor.ambarus@microchip.com>
Subject: [PATCH] mtd: spi-nor: Fix quad enable for Spansion like flashes
Date: Thu, 16 Jan 2020 10:37:00 +0100
Message-ID: <20200116093700.28308-1-michael@walle.cc> (raw)

The commit 7b678c69c0ca ("mtd: spi-nor: Merge spansion Quad Enable
methods") forgot to actually set the QE bit in some cases. Thus this
breaks quad mode accesses to flashes which support readback of the
status register-2. Fix it.

Fixes: 7b678c69c0ca ("mtd: spi-nor: Merge spansion Quad Enable methods")
Signed-off-by: Michael Walle <michael@walle.cc>
---
 drivers/mtd/spi-nor/spi-nor.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c
index addb6319fcbb..ea0429448207 100644
--- a/drivers/mtd/spi-nor/spi-nor.c
+++ b/drivers/mtd/spi-nor/spi-nor.c
@@ -2140,6 +2140,8 @@ static int spi_nor_sr2_bit1_quad_enable(struct spi_nor *nor)
 	if (nor->bouncebuf[0] & SR2_QUAD_EN_BIT1)
 		return 0;
 
+	nor->bouncebuf[0] |= SR2_QUAD_EN_BIT1;
+
 	return spi_nor_write_16bit_cr_and_check(nor, nor->bouncebuf[0]);
 }
 
-- 
2.20.1


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Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-01-16  9:37 Michael Walle [this message]
2020-01-16 10:35 ` Tudor.Ambarus
2020-01-17 13:58 ` Tudor.Ambarus
2020-01-17 21:47 ` Miquel Raynal

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