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authorHou Zhiqiang <B48286@freescale.com>2016-01-22 05:58:26 -0500
committerMark Brown <broonie@kernel.org>2016-01-22 12:03:26 -0500
commit5cfa1e4e0deced0cccedb4b30facb8a8e68e209b (patch)
tree4e5cfee93e3d6d50476455291c61584956abe10e
parentcabeea980879c2c701b0bd03f145c9f7dae17a63 (diff)
spi/fsl-espi: Correct the maximum transaction length
The maximum length during one transcation is 64KiB. Signed-off-by: Hou Zhiqiang <B48286@freescale.com> Signed-off-by: Mark Brown <broonie@kernel.org>
-rw-r--r--drivers/spi/spi-fsl-espi.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/spi/spi-fsl-espi.c b/drivers/spi/spi-fsl-espi.c
index 7fd6a4c009d2..7cb0c1921495 100644
--- a/drivers/spi/spi-fsl-espi.c
+++ b/drivers/spi/spi-fsl-espi.c
@@ -84,7 +84,7 @@ struct fsl_espi_transfer {
84/* SPCOM register values */ 84/* SPCOM register values */
85#define SPCOM_CS(x) ((x) << 30) 85#define SPCOM_CS(x) ((x) << 30)
86#define SPCOM_TRANLEN(x) ((x) << 0) 86#define SPCOM_TRANLEN(x) ((x) << 0)
87#define SPCOM_TRANLEN_MAX 0xFFFF /* Max transaction length */ 87#define SPCOM_TRANLEN_MAX 0x10000 /* Max transaction length */
88 88
89#define AUTOSUSPEND_TIMEOUT 2000 89#define AUTOSUSPEND_TIMEOUT 2000
90 90
@@ -233,7 +233,7 @@ static int fsl_espi_bufs(struct spi_device *spi, struct spi_transfer *t)
233 reinit_completion(&mpc8xxx_spi->done); 233 reinit_completion(&mpc8xxx_spi->done);
234 234
235 /* Set SPCOM[CS] and SPCOM[TRANLEN] field */ 235 /* Set SPCOM[CS] and SPCOM[TRANLEN] field */
236 if ((t->len - 1) > SPCOM_TRANLEN_MAX) { 236 if (t->len > SPCOM_TRANLEN_MAX) {
237 dev_err(mpc8xxx_spi->dev, "Transaction length (%d)" 237 dev_err(mpc8xxx_spi->dev, "Transaction length (%d)"
238 " beyond the SPCOM[TRANLEN] field\n", t->len); 238 " beyond the SPCOM[TRANLEN] field\n", t->len);
239 return -EINVAL; 239 return -EINVAL;