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path: root/drivers/spi/spi-dw.c
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Diffstat (limited to 'drivers/spi/spi-dw.c')
-rw-r--r--drivers/spi/spi-dw.c7
1 files changed, 2 insertions, 5 deletions
diff --git a/drivers/spi/spi-dw.c b/drivers/spi/spi-dw.c
index 729215885250..d0d5542efc06 100644
--- a/drivers/spi/spi-dw.c
+++ b/drivers/spi/spi-dw.c
@@ -376,9 +376,6 @@ static void pump_transfers(unsigned long data)
376 chip = dws->cur_chip; 376 chip = dws->cur_chip;
377 spi = message->spi; 377 spi = message->spi;
378 378
379 if (unlikely(!chip->clk_div))
380 chip->clk_div = dws->max_freq / chip->speed_hz;
381
382 if (message->state == ERROR_STATE) { 379 if (message->state == ERROR_STATE) {
383 message->status = -EIO; 380 message->status = -EIO;
384 goto early_exit; 381 goto early_exit;
@@ -419,7 +416,7 @@ static void pump_transfers(unsigned long data)
419 if (transfer->speed_hz) { 416 if (transfer->speed_hz) {
420 speed = chip->speed_hz; 417 speed = chip->speed_hz;
421 418
422 if (transfer->speed_hz != speed) { 419 if ((transfer->speed_hz != speed) || (!chip->clk_div)) {
423 speed = transfer->speed_hz; 420 speed = transfer->speed_hz;
424 421
425 /* clk_div doesn't support odd number */ 422 /* clk_div doesn't support odd number */
@@ -581,7 +578,6 @@ static int dw_spi_setup(struct spi_device *spi)
581 dev_err(&spi->dev, "No max speed HZ parameter\n"); 578 dev_err(&spi->dev, "No max speed HZ parameter\n");
582 return -EINVAL; 579 return -EINVAL;
583 } 580 }
584 chip->speed_hz = spi->max_speed_hz;
585 581
586 chip->tmode = 0; /* Tx & Rx */ 582 chip->tmode = 0; /* Tx & Rx */
587 /* Default SPI mode is SCPOL = 0, SCPH = 0 */ 583 /* Default SPI mode is SCPOL = 0, SCPH = 0 */
@@ -669,6 +665,7 @@ int dw_spi_add_host(struct device *dev, struct dw_spi *dws)
669 master->cleanup = dw_spi_cleanup; 665 master->cleanup = dw_spi_cleanup;
670 master->transfer_one_message = dw_spi_transfer_one_message; 666 master->transfer_one_message = dw_spi_transfer_one_message;
671 master->max_speed_hz = dws->max_freq; 667 master->max_speed_hz = dws->max_freq;
668 master->dev.of_node = dev->of_node;
672 669
673 /* Basic HW init */ 670 /* Basic HW init */
674 spi_hw_init(dws); 671 spi_hw_init(dws);