diff options
| author | Zhang Wei <wei.zhang@freescale.com> | 2008-03-19 02:45:00 +0100 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2008-03-19 01:00:59 +0100 |
| commit | f79abb627f033c85a6088231f20c85bc4a9bd757 (patch) | |
| tree | 151538a3a33026ae516606240a13404d1f1e7037 /drivers/dma/fsldma.h | |
| parent | Merge branch 'audit.b49' of git://git.kernel.org/pub/scm/linux/kernel/git/vir... (diff) | |
| download | linux-f79abb627f033c85a6088231f20c85bc4a9bd757.tar.xz linux-f79abb627f033c85a6088231f20c85bc4a9bd757.zip | |
fsldma: Fix the DMA halt when using DMA_INTERRUPT async_tx transfer.
The DMA_INTERRUPT async_tx is a NULL transfer, thus the BCR(count register)
is 0. When the transfer started with a byte count of zero, the DMA
controller will triger a PE(programming error) event and halt, not a normal
interrupt. I add special codes for PE event and DMA_INTERRUPT
async_tx testing.
Signed-off-by: Zhang Wei <wei.zhang@freescale.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/dma/fsldma.h')
| -rw-r--r-- | drivers/dma/fsldma.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/dma/fsldma.h b/drivers/dma/fsldma.h index ba78c42121ba..fddd6aee2a63 100644 --- a/drivers/dma/fsldma.h +++ b/drivers/dma/fsldma.h @@ -40,6 +40,7 @@ #define FSL_DMA_MR_EOTIE 0x00000080 #define FSL_DMA_SR_CH 0x00000020 +#define FSL_DMA_SR_PE 0x00000010 #define FSL_DMA_SR_CB 0x00000004 #define FSL_DMA_SR_TE 0x00000080 #define FSL_DMA_SR_EOSI 0x00000002 |