diff mbox

[1/2] spi/fsl-espi: Correct the maximum transaction length

Message ID 1453460307-9768-1-git-send-email-Zhiqiang.Hou@freescale.com (mailing list archive)
State Accepted
Commit 5cfa1e4e0deced0cccedb4b30facb8a8e68e209b
Headers show

Commit Message

Zhiqiang Hou Jan. 22, 2016, 10:58 a.m. UTC 
From: Hou Zhiqiang <B48286@freescale.com>

The maximum length during one transcation is 64KiB.

Signed-off-by: Hou Zhiqiang <B48286@freescale.com>
---
 drivers/spi/spi-fsl-espi.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
diff mbox

Patch

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;