| Message ID | 150369477016.6962.8636764604054663107.stgit@djiang5-desk3.ch.intel.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
diff --git a/drivers/dma/ioat/init.c b/drivers/dma/ioat/init.c index ed8ed11..1b881fb 100644 --- a/drivers/dma/ioat/init.c +++ b/drivers/dma/ioat/init.c @@ -1153,9 +1153,6 @@ static int ioat3_dma_probe(struct ioatdma_device *ioat_dma, int dca) } } - if (!(ioat_dma->cap & (IOAT_CAP_XOR | IOAT_CAP_PQ))) - dma_cap_set(DMA_PRIVATE, dma->cap_mask); - err = ioat_probe(ioat_dma); if (err) return err;
Commit 7618d0359c16 ("dmaengine: ioatdma: Set non RAID channels to be private capable") makes all non-RAID ioatdma channels as private to be requestable by dma_request_channel(). With PQ CAP support going away for ioatdma, this would make all channels private. To support the usage of ioatdma for blk-mq implementation of pmem we need as many channels we can share in order to be high performing. Thus reverting the patch. Signed-off-by: Dave Jiang <dave.jiang@intel.com> --- drivers/dma/ioat/init.c | 3 --- 1 file changed, 3 deletions(-)