From mboxrd@z Thu Jan 1 00:00:00 1970 From: Zhiqiang Hou Subject: [PATCH 1/2] spi/fsl-espi: Correct the maximum transaction length Date: Fri, 22 Jan 2016 18:58:26 +0800 Message-ID: <1453460307-9768-1-git-send-email-Zhiqiang.Hou@freescale.com> Mime-Version: 1.0 Content-Type: text/plain Cc: , , , , Hou Zhiqiang To: , Return-path: Sender: linux-spi-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-ID: From: Hou Zhiqiang The maximum length during one transcation is 64KiB. Signed-off-by: Hou Zhiqiang --- drivers/spi/spi-fsl-espi.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/spi/spi-fsl-espi.c b/drivers/spi/spi-fsl-espi.c index 7fd6a4c..7cb0c19 100644 --- a/drivers/spi/spi-fsl-espi.c +++ b/drivers/spi/spi-fsl-espi.c @@ -84,7 +84,7 @@ struct fsl_espi_transfer { /* SPCOM register values */ #define SPCOM_CS(x) ((x) << 30) #define SPCOM_TRANLEN(x) ((x) << 0) -#define SPCOM_TRANLEN_MAX 0xFFFF /* Max transaction length */ +#define SPCOM_TRANLEN_MAX 0x10000 /* Max transaction length */ #define AUTOSUSPEND_TIMEOUT 2000 @@ -233,7 +233,7 @@ static int fsl_espi_bufs(struct spi_device *spi, struct spi_transfer *t) reinit_completion(&mpc8xxx_spi->done); /* Set SPCOM[CS] and SPCOM[TRANLEN] field */ - if ((t->len - 1) > SPCOM_TRANLEN_MAX) { + if (t->len > SPCOM_TRANLEN_MAX) { dev_err(mpc8xxx_spi->dev, "Transaction length (%d)" " beyond the SPCOM[TRANLEN] field\n", t->len); return -EINVAL; -- 2.1.0.27.g96db324 -- To unsubscribe from this list: send the line "unsubscribe linux-spi" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html