linux-kernel - [PATCH] spi: spi-fsl-qspi: Ensure width is respected in spi-mem operations

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Message-Id: <20200114154613.8195-1-michael@walle.cc>
Date:   Tue, 14 Jan 2020 16:46:13 +0100
From:   Michael Walle <michael@...le.cc>
To:     linux-kernel@...r.kernel.org, linux-spi@...r.kernel.org
Cc:     Han Xu <han.xu@....com>, Mark Brown <broonie@...nel.org>,
        Yogesh Gaur <yogeshnarayan.gaur@....com>,
        Boris Brezillon <bbrezillon@...nel.org>,
        Frieder Schrempf <frieder.schrempf@...tron.de>,
        Michael Walle <michael@...le.cc>
Subject: [PATCH] spi: spi-fsl-qspi: Ensure width is respected in spi-mem operations

Make use of a core helper to ensure the desired width is respected
when calling spi-mem operators.

Otherwise only the SPI controller will be matched with the flash chip,
which might lead to wrong widths. Also consider the width specified by
the user in the device tree.

Fixes: 84d043185dbe ("spi: Add a driver for the Freescale/NXP QuadSPI controller")
Signed-off-by: Michael Walle <michael@...le.cc>
---
 drivers/spi/spi-fsl-qspi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/spi/spi-fsl-qspi.c b/drivers/spi/spi-fsl-qspi.c
index 79b1558b74b8..e8a499cd1f13 100644
--- a/drivers/spi/spi-fsl-qspi.c
+++ b/drivers/spi/spi-fsl-qspi.c
@@ -410,7 +410,7 @@ static bool fsl_qspi_supports_op(struct spi_mem *mem,
 	    op->data.nbytes > q->devtype_data->txfifo)
 		return false;
 
-	return true;
+	return spi_mem_default_supports_op(mem, op);
 }
 
 static void fsl_qspi_prepare_lut(struct fsl_qspi *q,
-- 
2.20.1