FAILED: patch "[PATCH] dmaengine: at_hdmac: Start transfer for cyclic channels in" failed to apply to 4.14-stable tree
Subsystems (3)
[email protected]
maintainerThe patch below does not apply to the 4.14-stable tree.
If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <[email protected]>.
Possible dependencies:
8a47221fc284 ("dmaengine: at_hdmac: Start transfer for cyclic channels in issue_pending") 078a6506141a ("dmaengine: at_hdmac: Fix deadlocks")
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From 8a47221fc28417ff8a32a4f92d4448a56c3cf7e1 Mon Sep 17 00:00:00 2001
From: Tudor Ambarus <[email protected]>
Date: Tue, 25 Oct 2022 12:02:37 +0300
Subject: [PATCH] dmaengine: at_hdmac: Start transfer for cyclic channels in
issue_pending
Cyclic channels must too call issue_pending in order to start a transfer. Start the transfer in issue_pending regardless of the type of channel. This wrongly worked before, because in the past the transfer was started at tx_submit level when only a desc in the transfer list.
drivers/dma/at_hdmac.c +0 -4
@@ -1536,10 +1536,6 @@ static void atc_issue_pending(struct dma_chan *chan)dev_vdbg (chan2dev (chan),"issue_pending\n" ); -/* Not needed for cyclic transfers */ -if (atc_chan_is_cyclic (atchan)) -return ; -atc_advance_work (atchan); }