From 60d0071b609ecb0aebe12aaedf34fe552da12c5b Mon Sep 17 00:00:00 2001 From: Sonic Zhang Date: Mon, 18 May 2009 10:01:16 +0000 Subject: 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 Signed-off-by: Mike Frysinger --- drivers/spi/spi_bfin5xx.c | 4 ---- 1 file changed, 4 deletions(-) (limited to 'drivers/spi') diff --git a/drivers/spi/spi_bfin5xx.c b/drivers/spi/spi_bfin5xx.c index 4f20b923a95c..61c2ebf9fe18 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 -- cgit v1.2.3-59-g8ed1b