diff options
| author | Markus Pargmann <mpa@pengutronix.de> | 2013-10-29 08:47:47 +0100 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@intel.com> | 2013-11-13 15:38:30 +0530 |
| commit | 702e94d66b555622ca6830de3095b5f0bb2ff6d7 (patch) | |
| tree | 9a1319edf4ad1a6601aee57692a925e8d952bc02 /mm/pagewalk.c | |
| parent | 7b11304a3c11a24a8674a47e8fd136182f86b49d (diff) | |
| download | linux-702e94d66b555622ca6830de3095b5f0bb2ff6d7.tar.gz | |
dma: mxs-dma: Fix channel reset hardware bug
This is no official errata, but I noticed that the channel reset may stop working if the DMA state engine is in the READ_FLUSH state. This patch uses the channel debug1 register to wait for the DMA statemachine to leave the READ_FLUSH state. After that we can continue to reset the channel. Tested on i.MX28. Signed-off-by: Markus Pargmann <mpa@pengutronix.de> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'mm/pagewalk.c')
0 files changed, 0 insertions, 0 deletions