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

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
...@@ -84,7 +84,7 @@ struct fsl_espi_transfer { ...@@ -84,7 +84,7 @@ struct fsl_espi_transfer {
/* SPCOM register values */ /* SPCOM register values */
#define SPCOM_CS(x) ((x) << 30) #define SPCOM_CS(x) ((x) << 30)
#define SPCOM_TRANLEN(x) ((x) << 0) #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 #define AUTOSUSPEND_TIMEOUT 2000
...@@ -233,7 +233,7 @@ static int fsl_espi_bufs(struct spi_device *spi, struct spi_transfer *t) ...@@ -233,7 +233,7 @@ static int fsl_espi_bufs(struct spi_device *spi, struct spi_transfer *t)
reinit_completion(&mpc8xxx_spi->done); reinit_completion(&mpc8xxx_spi->done);
/* Set SPCOM[CS] and SPCOM[TRANLEN] field */ /* 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)" dev_err(mpc8xxx_spi->dev, "Transaction length (%d)"
" beyond the SPCOM[TRANLEN] field\n", t->len); " beyond the SPCOM[TRANLEN] field\n", t->len);
return -EINVAL; return -EINVAL;
......
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