diff options
Diffstat (limited to 'drivers/dma')
| -rw-r--r-- | drivers/dma/ioat/dma_v3.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/dma/ioat/dma_v3.c b/drivers/dma/ioat/dma_v3.c index 42f6f10fb0cc..e58ecb29513f 100644 --- a/drivers/dma/ioat/dma_v3.c +++ b/drivers/dma/ioat/dma_v3.c | |||
| @@ -650,9 +650,11 @@ __ioat3_prep_pq_lock(struct dma_chan *c, enum sum_check_flags *result, | |||
| 650 | 650 | ||
| 651 | num_descs = ioat2_xferlen_to_descs(ioat, len); | 651 | num_descs = ioat2_xferlen_to_descs(ioat, len); |
| 652 | /* we need 2x the number of descriptors to cover greater than 3 | 652 | /* we need 2x the number of descriptors to cover greater than 3 |
| 653 | * sources | 653 | * sources (we need 1 extra source in the q-only continuation |
| 654 | * case and 3 extra sources in the p+q continuation case. | ||
| 654 | */ | 655 | */ |
| 655 | if (src_cnt > 3 || flags & DMA_PREP_CONTINUE) { | 656 | if (src_cnt + dmaf_p_disabled_continue(flags) > 3 || |
| 657 | (dmaf_continue(flags) && !dmaf_p_disabled_continue(flags))) { | ||
| 656 | with_ext = 1; | 658 | with_ext = 1; |
| 657 | num_descs *= 2; | 659 | num_descs *= 2; |
| 658 | } else | 660 | } else |