diff options
| author | Scott Jiang <scott.jiang.linux@gmail.com> | 2012-04-23 18:18:13 -0400 |
|---|---|---|
| committer | Grant Likely <grant.likely@secretlab.ca> | 2012-04-27 12:20:39 -0600 |
| commit | 2431a8154634027ce3915200699f26fb3725a1f2 (patch) | |
| tree | 836dc408c6bfc8af24a5b9c5f0f46b7c23001438 /drivers/spi | |
| parent | 128465ca7c0775609b1c24f66cd6bddac5f59c9b (diff) | |
| download | lwn-2431a8154634027ce3915200699f26fb3725a1f2.tar.gz lwn-2431a8154634027ce3915200699f26fb3725a1f2.zip | |
spi/spi-bfin5xx: Fix flush of last bit after each spi transfer
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>
Diffstat (limited to 'drivers/spi')
| -rw-r--r-- | drivers/spi/spi-bfin5xx.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/spi/spi-bfin5xx.c b/drivers/spi/spi-bfin5xx.c index 432d0190e6ba..9bb4d4af8547 100644 --- a/drivers/spi/spi-bfin5xx.c +++ b/drivers/spi/spi-bfin5xx.c @@ -587,6 +587,7 @@ static void bfin_spi_pump_transfers(unsigned long data) if (message->state == DONE_STATE) { dev_dbg(&drv_data->pdev->dev, "transfer: all done!\n"); message->status = 0; + bfin_spi_flush(drv_data); bfin_spi_giveback(drv_data); return; } @@ -870,8 +871,10 @@ static void bfin_spi_pump_transfers(unsigned long data) message->actual_length += drv_data->len_in_bytes; /* Move to next transfer of this msg */ 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); + } } /* Schedule next transfer tasklet */ |