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spi/spi-bfin5xx: Fix flush of last bit after each spi transfer

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This patch ensures that the last bit of a transfer gets correctly
flushed out of the register.

Signed-off-by: Scott Jiang <scott.jiang.linux@gmail.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
This commit is contained in:
Scott Jiang 2012-04-23 18:18:13 -04:00 committed by Grant Likely
parent 128465ca7c
commit 2431a81546
1 changed files with 4 additions and 1 deletions
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5
drivers/spi/spi-bfin5xx.c
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@ -587,6 +587,7 @@ static void bfin_spi_pump_transfers(unsigned long data)
if (message->state == DONE_STATE) { if (message->state == DONE_STATE) {
dev_dbg(&drv_data->pdev->dev, "transfer: all done!\n"); dev_dbg(&drv_data->pdev->dev, "transfer: all done!\n");
message->status = 0; message->status = 0;
bfin_spi_flush(drv_data);
bfin_spi_giveback(drv_data); bfin_spi_giveback(drv_data);
return; return;
} }
@ -870,8 +871,10 @@ static void bfin_spi_pump_transfers(unsigned long data)
message->actual_length += drv_data->len_in_bytes; message->actual_length += drv_data->len_in_bytes;
/* Move to next transfer of this msg */ /* Move to next transfer of this msg */
message->state = bfin_spi_next_transfer(drv_data); message->state = bfin_spi_next_transfer(drv_data);
if (drv_data->cs_change) if (drv_data->cs_change && message->state != DONE_STATE) {
bfin_spi_flush(drv_data);
bfin_spi_cs_deactive(drv_data, chip); bfin_spi_cs_deactive(drv_data, chip);
}
} }
/* Schedule next transfer tasklet */ /* Schedule next transfer tasklet */