On Thu, Jul 13, 2023 at 12:40:18PM +0530, Krishna chaitanya chundru wrote: > @@ -464,6 +484,13 @@ int mhi_ep_queue_skb(struct mhi_ep_device *mhi_dev, struct sk_buff *skb) > buf_left = skb->len; > ring = &mhi_cntrl->mhi_chan[mhi_chan->chan].ring; > > + if (mhi_cntrl->mhi_state == MHI_STATE_M3) { > + if (mhi_ep_wake_host(mhi_cntrl)) { > + dev_err(dev, "Failed to wakeup host\n"); > + return -ENODEV; > + } Since you're going to be redoing this patch anyway could you please propage the error code: ret = mhi_ep_wake_host(mhi_cntrl); if (ret) { dev_err(dev, "Failed to wakeup host\n"); return ret; } regards, dan carpenter