diff options
| author | Sonic Zhang <sonic.zhang@analog.com> | 2009-05-18 10:01:16 +0000 |
|---|---|---|
| committer | Mike Frysinger <vapier@gentoo.org> | 2010-10-18 02:49:28 -0400 |
| commit | 60d0071b609ecb0aebe12aaedf34fe552da12c5b (patch) | |
| tree | 59555a6112567fc794f290c72ddfcb0791e3fdaf /drivers/spi | |
| parent | ac01e97d644da8e947ffa1bde5083290fe2e36e7 (diff) | |
| download | op-kernel-dev-60d0071b609ecb0aebe12aaedf34fe552da12c5b.zip op-kernel-dev-60d0071b609ecb0aebe12aaedf34fe552da12c5b.tar.gz | |
spi/bfin_spi: work around anomaly 05000119
Anomaly 05000119 states that the DMA_RUN bit with peripherals isn't
reliable. However, the way the driver is currently written (DMA IRQ
callback), we don't need the polling in the first place, so drop it.
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Diffstat (limited to 'drivers/spi')
| -rw-r--r-- | drivers/spi/spi_bfin5xx.c | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/drivers/spi/spi_bfin5xx.c b/drivers/spi/spi_bfin5xx.c index 4f20b92..61c2ebf 100644 --- a/drivers/spi/spi_bfin5xx.c +++ b/drivers/spi/spi_bfin5xx.c @@ -540,10 +540,6 @@ static irqreturn_t bfin_spi_dma_irq_handler(int irq, void *dev_id) clear_dma_irqstat(drv_data->dma_channel); - /* Wait for DMA to complete */ - while (get_dma_curr_irqstat(drv_data->dma_channel) & DMA_RUN) - cpu_relax(); - /* * wait for the last transaction shifted out. HRM states: * at this point there may still be data in the SPI DMA FIFO waiting |
