From 33ebffa105990c43bf336cabe26c77384f59fe70 Mon Sep 17 00:00:00 2001 From: Peter Ujfalusi Date: Mon, 24 Aug 2020 15:01:08 +0300 Subject: [PATCH] dmaengine: ti: k3-udma: Fix the TR initialization for prep_slave_sg The TR which needs to be initialized for the next sg entry is indexed by tr_idx and not by the running i counter. In case any sub element in the SG needs more than one TR, the code would corrupt an already configured TR. Signed-off-by: Peter Ujfalusi Link: https://lore.kernel.org/r/20200824120108.9178-1-peter.ujfalusi@ti.com Fixes: 6cf668a4ef829 ("dmaengine: ti: k3-udma: Use the TR counter helper for slave_sg and cyclic") Signed-off-by: Vinod Koul --- drivers/dma/ti/k3-udma.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/dma/ti/k3-udma.c b/drivers/dma/ti/k3-udma.c index c14e6cb..30cb514c 100644 --- a/drivers/dma/ti/k3-udma.c +++ b/drivers/dma/ti/k3-udma.c @@ -2059,9 +2059,9 @@ udma_prep_slave_sg_tr(struct udma_chan *uc, struct scatterlist *sgl, return NULL; } - cppi5_tr_init(&tr_req[i].flags, CPPI5_TR_TYPE1, false, false, - CPPI5_TR_EVENT_SIZE_COMPLETION, 0); - cppi5_tr_csf_set(&tr_req[i].flags, CPPI5_TR_CSF_SUPR_EVT); + cppi5_tr_init(&tr_req[tr_idx].flags, CPPI5_TR_TYPE1, false, + false, CPPI5_TR_EVENT_SIZE_COMPLETION, 0); + cppi5_tr_csf_set(&tr_req[tr_idx].flags, CPPI5_TR_CSF_SUPR_EVT); tr_req[tr_idx].addr = sg_addr; tr_req[tr_idx].icnt0 = tr0_cnt0; -- 2.7.4