diff options
| author | Steven J. Magnani <steve@digidescorp.com> | 2010-02-28 22:18:16 -0700 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2010-02-28 22:18:16 -0700 |
| commit | 76bd061f5c7b7550cdaed68ad6219ea7cee288fc (patch) | |
| tree | 5ae663b8bab6bd77cab2b8bc095c0743cc2da138 /include/linux/dmaengine.h | |
| parent | 6ca3a7a96e91b1aa8c704153c992b191d35b5747 (diff) | |
| download | lwn-76bd061f5c7b7550cdaed68ad6219ea7cee288fc.tar.gz lwn-76bd061f5c7b7550cdaed68ad6219ea7cee288fc.zip | |
fsldma: Fix cookie issues
fsl_dma_update_completed_cookie() appears to calculate the last completed
cookie incorrectly in the corner case where DMA on cookie 1 is in progress
just following a cookie wrap.
Signed-off-by: Steven J. Magnani <steve@digidescorp.com>
Acked-by: Ira W. Snyder <iws@ovro.caltech.edu>
[dan.j.williams@intel.com: fix an integer overflow warning with INT_MAX]
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'include/linux/dmaengine.h')
| -rw-r--r-- | include/linux/dmaengine.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h index 78784982b33e..4d8d619f28bc 100644 --- a/include/linux/dmaengine.h +++ b/include/linux/dmaengine.h @@ -31,6 +31,8 @@ * if dma_cookie_t is >0 it's a DMA request cookie, <0 it's an error code */ typedef s32 dma_cookie_t; +#define DMA_MIN_COOKIE 1 +#define DMA_MAX_COOKIE INT_MAX #define dma_submit_error(cookie) ((cookie) < 0 ? 1 : 0) |