diff options
| author |   Peter Ujfalusi <peter.ujfalusi@ti.com> | 2020-05-12 16:46:11 +0300 |
|---|---|---|
| committer |   Vinod Koul <vkoul@kernel.org> | 2020-05-15 11:22:41 +0530 |
| commit | 6fea8735fd96f39c1a0ba52961069ae66e549595 (patch) | |
| tree | cc6d81a5fd4e981c4abded40ce9f72126d26c3c9 /drivers/dma | |
| parent | dmaengine: ti: k3-udma: Add missing dma_sync call for rx flush descriptor (diff) | |
| download | linux-dev-6fea8735fd96f39c1a0ba52961069ae66e549595.tar.xz linux-dev-6fea8735fd96f39c1a0ba52961069ae66e549595.zip | |
dmaengine: ti: k3-udma: Remove udma_chan.in_ring_cnt
The in_ring_cnt is not used for anything, it can be removed.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Link: https://lore.kernel.org/r/20200512134611.6015-1-peter.ujfalusi@ti.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma')
| -rw-r--r-- | drivers/dma/ti/k3-udma.c | 16 |
1 files changed, 1 insertions, 15 deletions
diff --git a/drivers/dma/ti/k3-udma.c b/drivers/dma/ti/k3-udma.c index 58af578d8dc1..653aea3f6de2 100644 --- a/drivers/dma/ti/k3-udma.c +++ b/drivers/dma/ti/k3-udma.c @@ -231,7 +231,6 @@ struct udma_chan { struct udma_tx_drain tx_drain; u32 bcnt; /* number of bytes completed since the start of the channel */ - u32 in_ring_cnt; /* number of descriptors in flight */ /* Channel configuration parameters */ struct udma_chan_config config; @@ -574,7 +573,6 @@ static int udma_push_to_ring(struct udma_chan *uc, int idx) struct udma_desc *d = uc->desc; struct k3_ring *ring = NULL; dma_addr_t paddr; - int ret; switch (uc->config.dir) { case DMA_DEV_TO_MEM: @@ -598,11 +596,7 @@ static int udma_push_to_ring(struct udma_chan *uc, int idx) udma_sync_for_device(uc, idx); } - ret = k3_ringacc_ring_push(ring, &paddr); - if (!ret) - uc->in_ring_cnt++; - - return ret; + return k3_ringacc_ring_push(ring, &paddr); } static bool udma_desc_is_rx_flush(struct udma_chan *uc, dma_addr_t addr) @@ -655,9 +649,6 @@ static int udma_pop_from_ring(struct udma_chan *uc, dma_addr_t *addr) d->hwdesc[0].cppi5_desc_size, DMA_FROM_DEVICE); rmb(); /* Ensure that reads are not moved before this point */ - - if (!ret) - uc->in_ring_cnt--; } return ret; @@ -697,8 +688,6 @@ static void udma_reset_rings(struct udma_chan *uc) udma_desc_free(&uc->terminated_desc->vd); uc->terminated_desc = NULL; } - - uc->in_ring_cnt = 0; } static void udma_reset_counters(struct udma_chan *uc) @@ -1073,9 +1062,6 @@ static irqreturn_t udma_ring_irq_handler(int irq, void *data) /* Teardown completion message */ if (cppi5_desc_is_tdcm(paddr)) { - /* Compensate our internal pop/push counter */ - uc->in_ring_cnt++; - complete_all(&uc->teardown_completed); if (uc->terminated_desc) { |