diff options
| author | John Madieu <john.madieu.xa@bp.renesas.com> | 2026-03-16 15:32:50 +0200 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2026-03-17 16:12:11 +0530 |
| commit | bfaa60be647842cece968769f208e57fa5dee594 (patch) | |
| tree | e1df045e07f8f97bb70ad12278a479b7ee0c70c9 | |
| parent | be25945d0ca3ac736c448b530c47e854c82a0343 (diff) | |
dmaengine: sh: rz-dmac: Use rz_lmdesc_setup() to invalidate descriptors
rz_lmdesc_setup() invalidates DMA descriptors more comprehensively.
It resets the base, head, and tail pointers of the descriptor list and
clears the descriptor headers and their NXLA pointers. Use
rz_lmdesc_setup() instead of open-coding parts of its logic.
Signed-off-by: John Madieu <john.madieu.xa@bp.renesas.com>
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Link: https://patch.msgid.link/20260316133252.240348-7-claudiu.beznea.uj@bp.renesas.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
| -rw-r--r-- | drivers/dma/sh/rz-dmac.c | 10 |
1 files changed, 2 insertions, 8 deletions
diff --git a/drivers/dma/sh/rz-dmac.c b/drivers/dma/sh/rz-dmac.c index eca62d9e9772..6bfa77844e02 100644 --- a/drivers/dma/sh/rz-dmac.c +++ b/drivers/dma/sh/rz-dmac.c @@ -460,15 +460,12 @@ static void rz_dmac_free_chan_resources(struct dma_chan *chan) { struct rz_dmac_chan *channel = to_rz_dmac_chan(chan); struct rz_dmac *dmac = to_rz_dmac(chan->device); - struct rz_lmdesc *lmdesc = channel->lmdesc.base; struct rz_dmac_desc *desc, *_desc; unsigned long flags; - unsigned int i; spin_lock_irqsave(&channel->vc.lock, flags); - for (i = 0; i < DMAC_NR_LMDESC; i++) - lmdesc[i].header = 0; + rz_lmdesc_setup(channel, channel->lmdesc.base); rz_dmac_disable_hw(channel); list_splice_tail_init(&channel->ld_active, &channel->ld_free); @@ -560,15 +557,12 @@ rz_dmac_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl, static int rz_dmac_terminate_all(struct dma_chan *chan) { struct rz_dmac_chan *channel = to_rz_dmac_chan(chan); - struct rz_lmdesc *lmdesc = channel->lmdesc.base; unsigned long flags; - unsigned int i; LIST_HEAD(head); spin_lock_irqsave(&channel->vc.lock, flags); rz_dmac_disable_hw(channel); - for (i = 0; i < DMAC_NR_LMDESC; i++) - lmdesc[i].header = 0; + rz_lmdesc_setup(channel, channel->lmdesc.base); list_splice_tail_init(&channel->ld_active, &channel->ld_free); list_splice_tail_init(&channel->ld_queue, &channel->ld_free); |