linux-kernel - [PATCH 1/1] take in account bits per word instead of assuming 8-bits

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Date:   Sun, 17 Sep 2023 18:40:37 +0200
From:   Stefan Moring <stefanmoring@...il.com>
To:     broonie@...nel.org, shawnguo@...nel.org, s.hauer@...gutronxi.de,
        festevam@...il.com, linux-imx@...p.com, linux-psi@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        sre@...nel.org
Cc:     Stefan Moring <stefanmoring@...il.com>
Subject: [PATCH 1/1] take in account bits per word instead of assuming 8-bits

The IMX spi driver has a hardcoded 8, breaking the driver for word
lengths other than 8.

Signed-off-by: Stefan Moring <stefanmoring@...il.com>

---
 drivers/spi/spi-imx.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/spi/spi-imx.c b/drivers/spi/spi-imx.c
index a8a74c7cb79f..498e35c8db2c 100644
--- a/drivers/spi/spi-imx.c
+++ b/drivers/spi/spi-imx.c
@@ -662,7 +662,7 @@ static int mx51_ecspi_prepare_transfer(struct spi_imx_data *spi_imx,
 		if (spi_imx->count >= 512)
 			ctrl |= 0xFFF << MX51_ECSPI_CTRL_BL_OFFSET;
 		else
-			ctrl |= (spi_imx->count*8 - 1)
+			ctrl |= (spi_imx->count * spi_imx->bits_per_word - 1)
 				<< MX51_ECSPI_CTRL_BL_OFFSET;
 	}
 
-- 
2.42.0