diff options
Diffstat (limited to 'drivers/bus/mhi/core/main.c')
| -rw-r--r-- | drivers/bus/mhi/core/main.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/drivers/bus/mhi/core/main.c b/drivers/bus/mhi/core/main.c index e11f716c56e7..1330e3e5d2df 100644 --- a/drivers/bus/mhi/core/main.c +++ b/drivers/bus/mhi/core/main.c @@ -1276,7 +1276,8 @@ error_invalid_state: } int mhi_prepare_channel(struct mhi_controller *mhi_cntrl, - struct mhi_chan *mhi_chan) + struct mhi_chan *mhi_chan, + enum mhi_chan_flags flags) { int ret = 0; struct device *dev = &mhi_cntrl->mhi_dev->dev; @@ -1336,6 +1337,9 @@ int mhi_prepare_channel(struct mhi_controller *mhi_cntrl, mhi_chan->ch_state = MHI_CH_STATE_ENABLED; write_unlock_irq(&mhi_chan->lock); + if (mhi_chan->dir == DMA_FROM_DEVICE) + mhi_chan->pre_alloc = !!(flags & MHI_CH_INBOUND_ALLOC_BUFS); + /* Pre-allocate buffer for xfer ring */ if (mhi_chan->pre_alloc) { int nr_el = get_nr_avail_ring_elements(mhi_cntrl, @@ -1482,7 +1486,8 @@ void mhi_reset_chan(struct mhi_controller *mhi_cntrl, struct mhi_chan *mhi_chan) } /* Move channel to start state */ -int mhi_prepare_for_transfer(struct mhi_device *mhi_dev) +int mhi_prepare_for_transfer(struct mhi_device *mhi_dev, + enum mhi_chan_flags flags) { int ret, dir; struct mhi_controller *mhi_cntrl = mhi_dev->mhi_cntrl; @@ -1493,7 +1498,7 @@ int mhi_prepare_for_transfer(struct mhi_device *mhi_dev) if (!mhi_chan) continue; - ret = mhi_prepare_channel(mhi_cntrl, mhi_chan); + ret = mhi_prepare_channel(mhi_cntrl, mhi_chan, flags); if (ret) goto error_open_chan; } |