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path: root/drivers/spi/spi-xcomm.c
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Diffstat (limited to 'drivers/spi/spi-xcomm.c')
-rw-r--r--drivers/spi/spi-xcomm.c12
1 files changed, 4 insertions, 8 deletions
diff --git a/drivers/spi/spi-xcomm.c b/drivers/spi/spi-xcomm.c
index 24c40b13dab1..2505b7e1232a 100644
--- a/drivers/spi/spi-xcomm.c
+++ b/drivers/spi/spi-xcomm.c
@@ -74,15 +74,13 @@ static void spi_xcomm_chipselect(struct spi_xcomm *spi_xcomm,
74static int spi_xcomm_setup_transfer(struct spi_xcomm *spi_xcomm, 74static int spi_xcomm_setup_transfer(struct spi_xcomm *spi_xcomm,
75 struct spi_device *spi, struct spi_transfer *t, unsigned int *settings) 75 struct spi_device *spi, struct spi_transfer *t, unsigned int *settings)
76{ 76{
77 unsigned int speed;
78
79 if (t->len > 62) 77 if (t->len > 62)
80 return -EINVAL; 78 return -EINVAL;
81 79
82 speed = t->speed_hz ? t->speed_hz : spi->max_speed_hz; 80 if (t->speed_hz != spi_xcomm->current_speed) {
81 unsigned int divider;
83 82
84 if (speed != spi_xcomm->current_speed) { 83 divider = DIV_ROUND_UP(SPI_XCOMM_CLOCK, t->speed_hz);
85 unsigned int divider = DIV_ROUND_UP(SPI_XCOMM_CLOCK, speed);
86 if (divider >= 64) 84 if (divider >= 64)
87 *settings |= SPI_XCOMM_SETTINGS_CLOCK_DIV_64; 85 *settings |= SPI_XCOMM_SETTINGS_CLOCK_DIV_64;
88 else if (divider >= 16) 86 else if (divider >= 16)
@@ -90,7 +88,7 @@ static int spi_xcomm_setup_transfer(struct spi_xcomm *spi_xcomm,
90 else 88 else
91 *settings |= SPI_XCOMM_SETTINGS_CLOCK_DIV_4; 89 *settings |= SPI_XCOMM_SETTINGS_CLOCK_DIV_4;
92 90
93 spi_xcomm->current_speed = speed; 91 spi_xcomm->current_speed = t->speed_hz;
94 } 92 }
95 93
96 if (spi->mode & SPI_CPOL) 94 if (spi->mode & SPI_CPOL)
@@ -148,8 +146,6 @@ static int spi_xcomm_transfer_one(struct spi_master *master,
148 int status = 0; 146 int status = 0;
149 bool is_last; 147 bool is_last;
150 148
151 is_first = true;
152
153 spi_xcomm_chipselect(spi_xcomm, spi, true); 149 spi_xcomm_chipselect(spi_xcomm, spi, true);
154 150
155 list_for_each_entry(t, &msg->transfers, transfer_list) { 151 list_for_each_entry(t, &msg->transfers, transfer_list) {