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Commit f48a3870 authored by Tudor Ambarus's avatar Tudor Ambarus Committed by Greg Kroah-Hartman
Browse files

dmaengine: at_xdmac: Start transfer for cyclic channels in issue_pending 



commit e6af9b05bec63cd4d1de2a33968cd0be2a91282a upstream.

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.

Fixes: e1f7c9ee ("dmaengine: at_xdmac: creation of the atmel eXtended DMA Controller driver")
Change-Id: If1bf3e13329cebb9904ae40620f6cf2b7f06fe9f
Signed-off-by: default avatarTudor Ambarus <tudor.ambarus@microchip.com>
Link: https://lore.kernel.org/r/20211215110115.191749-3-tudor.ambarus@microchip.com


Signed-off-by: default avatarVinod Koul <vkoul@kernel.org>
Signed-off-by: default avatarMickael GARDET <m.gardet@overkiz.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 41ce06a3

drivers/dma/at_xdmac.c

+4 −2
Original line number Diff line number Diff line
@@ -1726,11 +1726,13 @@ static irqreturn_t at_xdmac_interrupt(int irq, void *dev_id) 
static void at_xdmac_issue_pending(struct dma_chan *chan)

{

	struct at_xdmac_chan *atchan = to_at_xdmac_chan(chan);

	unsigned long flags;



	dev_dbg(chan2dev(&atchan->chan), "%s\n", __func__);



	if (!at_xdmac_chan_is_cyclic(atchan))

	spin_lock_irqsave(&atchan->lock, flags);

	at_xdmac_advance_work(atchan);

	spin_unlock_irqrestore(&atchan->lock, flags);



	return;

}