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| author |   Russell King <rmk@dyn-67.arm.linux.org.uk> | 2008-12-15 22:13:26 +0000 |
|---|---|---|
| committer |   Russell King <rmk+kernel@arm.linux.org.uk> | 2008-12-15 22:13:26 +0000 |
| commit | 7e1548a597ef7e26d5d62f8be3be6da9e101b26c (patch) | |
| tree | fe6cbf4d9a3c1afdba04fb276fef0f932403727c /arch/arm/plat-omap/dma.c | |
| parent | Merge branch 'for_rmk' of git://git.mnementh.co.uk/linux-2.6-im into devel (diff) | |
| parent | ARM: OMAP3: Pin multiplexing updates for 24xx and 34xx (diff) | |
| download | linux-dev-7e1548a597ef7e26d5d62f8be3be6da9e101b26c.tar.xz linux-dev-7e1548a597ef7e26d5d62f8be3be6da9e101b26c.zip | |
Merge branch 'omap3-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6 into devel
Diffstat (limited to 'arch/arm/plat-omap/dma.c')
| -rw-r--r-- | arch/arm/plat-omap/dma.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/arch/arm/plat-omap/dma.c b/arch/arm/plat-omap/dma.c index 7686b9fa53f2..692d2b495af3 100644 --- a/arch/arm/plat-omap/dma.c +++ b/arch/arm/plat-omap/dma.c @@ -1848,9 +1848,22 @@ static int omap2_dma_handle_ch(int ch) printk(KERN_INFO "DMA synchronization event drop occurred with device " "%d\n", dma_chan[ch].dev_id); - if (unlikely(status & OMAP2_DMA_TRANS_ERR_IRQ)) + if (unlikely(status & OMAP2_DMA_TRANS_ERR_IRQ)) { printk(KERN_INFO "DMA transaction error with device %d\n", dma_chan[ch].dev_id); + if (cpu_class_is_omap2()) { + /* Errata: sDMA Channel is not disabled + * after a transaction error. So we explicitely + * disable the channel + */ + u32 ccr; + + ccr = dma_read(CCR(ch)); + ccr &= ~OMAP_DMA_CCR_EN; + dma_write(ccr, CCR(ch)); + dma_chan[ch].flags &= ~OMAP_DMA_ACTIVE; + } + } if (unlikely(status & OMAP2_DMA_SECURE_ERR_IRQ)) printk(KERN_INFO "DMA secure error with device %d\n", dma_chan[ch].dev_id); |