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spi/bfin_spi: use dma_disable_irq_nosync() in irq handler 

Using disable_irq() on the IRQ whose handler we are currently executing in
can easily lead to a hang.  So use the nosync variant here.

Signed-off-by: Barry Song <barry.song@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
This commit is contained in:
Barry Song 2010-01-22 10:07:30 +00:00 committed by Mike Frysinger
parent 5e8592dca3
commit a75bd65b21
1 changed files with 1 additions and 1 deletions
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2
drivers/spi/spi_bfin5xx.c
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@ -547,7 +547,7 @@ static irqreturn_t bfin_spi_dma_irq_handler(int irq, void *dev_id)
dev_dbg(&drv_data->pdev->dev,
"disable dma channel irq%d\n",
drv_data->dma_channel);
dma_disable_irq(drv_data->dma_channel);
dma_disable_irq_nosync(drv_data->dma_channel);
return IRQ_HANDLED;
}