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Commit 5cfa1e4e authored by Hou Zhiqiang's avatar Hou Zhiqiang Committed by Mark Brown
Browse files

spi/fsl-espi: Correct the maximum transaction length 



The maximum length during one transcation is 64KiB.

Signed-off-by: default avatarHou Zhiqiang <B48286@freescale.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent cabeea98

drivers/spi/spi-fsl-espi.c

+2 −2
Original line number Diff line number Diff line
@@ -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;