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EDMA driver get write(read) channel number from register, then save these into dw_edma. Old wr(rd)_ch_cnt in dw_edma_chip actuall means how many link list memory are available in ll_region_wr(rd)[EDMA_MAX_WR_CH]. So rename it to ll_wr(rd)_cnt to indicate actual usage. Signed-off-by: Frank Li Reviewed-by: Serge Semin Reviewed-by: Manivannan Sadhasivam Tested-by: Serge Semin Tested-by: Manivannan Sadhasivam --- Change from v10 to v11 - none Change from v9 to v10 - Change comment for ll_wr(rd)_cnt Change from v6 to v9 - none Change from v5 to v6 - s/rename/Rename/ at subject new patch at v4 drivers/dma/dw-edma/dw-edma-core.c | 4 ++-- drivers/dma/dw-edma/dw-edma-pcie.c | 12 ++++++------ include/linux/dma/edma.h | 8 ++++---- 3 files changed, 12 insertions(+), 12 deletions(-) diff --git a/drivers/dma/dw-edma/dw-edma-core.c b/drivers/dma/dw-edma/dw-edma-core.c index 58e91fe384282..1ef326f7151a3 100644 --- a/drivers/dma/dw-edma/dw-edma-core.c +++ b/drivers/dma/dw-edma/dw-edma-core.c @@ -919,11 +919,11 @@ int dw_edma_probe(struct dw_edma_chip *chip) raw_spin_lock_init(&dw->lock); - dw->wr_ch_cnt = min_t(u16, chip->wr_ch_cnt, + dw->wr_ch_cnt = min_t(u16, chip->ll_wr_cnt, dw_edma_v0_core_ch_count(dw, EDMA_DIR_WRITE)); dw->wr_ch_cnt = min_t(u16, dw->wr_ch_cnt, EDMA_MAX_WR_CH); - dw->rd_ch_cnt = min_t(u16, chip->rd_ch_cnt, + dw->rd_ch_cnt = min_t(u16, chip->ll_rd_cnt, dw_edma_v0_core_ch_count(dw, EDMA_DIR_READ)); dw->rd_ch_cnt = min_t(u16, dw->rd_ch_cnt, EDMA_MAX_RD_CH); diff --git a/drivers/dma/dw-edma/dw-edma-pcie.c b/drivers/dma/dw-edma/dw-edma-pcie.c index ae42bad24dd5a..7732537f96086 100644 --- a/drivers/dma/dw-edma/dw-edma-pcie.c +++ b/drivers/dma/dw-edma/dw-edma-pcie.c @@ -230,14 +230,14 @@ static int dw_edma_pcie_probe(struct pci_dev *pdev, chip->nr_irqs = nr_irqs; chip->ops = &dw_edma_pcie_core_ops; - chip->wr_ch_cnt = vsec_data.wr_ch_cnt; - chip->rd_ch_cnt = vsec_data.rd_ch_cnt; + chip->ll_wr_cnt = vsec_data.wr_ch_cnt; + chip->ll_rd_cnt = vsec_data.rd_ch_cnt; chip->reg_base = pcim_iomap_table(pdev)[vsec_data.rg.bar]; if (!chip->reg_base) return -ENOMEM; - for (i = 0; i < chip->wr_ch_cnt; i++) { + for (i = 0; i < chip->ll_wr_cnt; i++) { struct dw_edma_region *ll_region = &chip->ll_region_wr[i]; struct dw_edma_region *dt_region = &chip->dt_region_wr[i]; struct dw_edma_block *ll_block = &vsec_data.ll_wr[i]; @@ -262,7 +262,7 @@ static int dw_edma_pcie_probe(struct pci_dev *pdev, dt_region->sz = dt_block->sz; } - for (i = 0; i < chip->rd_ch_cnt; i++) { + for (i = 0; i < chip->ll_rd_cnt; i++) { struct dw_edma_region *ll_region = &chip->ll_region_rd[i]; struct dw_edma_region *dt_region = &chip->dt_region_rd[i]; struct dw_edma_block *ll_block = &vsec_data.ll_rd[i]; @@ -302,7 +302,7 @@ static int dw_edma_pcie_probe(struct pci_dev *pdev, chip->reg_base); - for (i = 0; i < chip->wr_ch_cnt; i++) { + for (i = 0; i < chip->ll_wr_cnt; i++) { pci_dbg(pdev, "L. List:\tWRITE CH%.2u, BAR=%u, off=0x%.8lx, sz=0x%zx bytes, addr(v=%p, p=%pa)\n", i, vsec_data.ll_wr[i].bar, vsec_data.ll_wr[i].off, chip->ll_region_wr[i].sz, @@ -314,7 +314,7 @@ static int dw_edma_pcie_probe(struct pci_dev *pdev, chip->dt_region_wr[i].vaddr, &chip->dt_region_wr[i].paddr); } - for (i = 0; i < chip->rd_ch_cnt; i++) { + for (i = 0; i < chip->ll_rd_cnt; i++) { pci_dbg(pdev, "L. List:\tREAD CH%.2u, BAR=%u, off=0x%.8lx, sz=0x%zx bytes, addr(v=%p, p=%pa)\n", i, vsec_data.ll_rd[i].bar, vsec_data.ll_rd[i].off, chip->ll_region_rd[i].sz, diff --git a/include/linux/dma/edma.h b/include/linux/dma/edma.h index 195ee1e47f21d..c8b479f1d4da7 100644 --- a/include/linux/dma/edma.h +++ b/include/linux/dma/edma.h @@ -40,8 +40,8 @@ enum dw_edma_map_format { * @nr_irqs: total dma irq number * @ops DMA channel to IRQ number mapping * @reg_base DMA register base address - * @wr_ch_cnt DMA write channel number - * @rd_ch_cnt DMA read channel number + * @ll_wr_cnt DMA write link list count + * @ll_rd_cnt DMA read link list count * @rg_region DMA register region * @ll_region_wr DMA descriptor link list memory for write channel * @ll_region_rd DMA descriptor link list memory for read channel @@ -58,8 +58,8 @@ struct dw_edma_chip { void __iomem *reg_base; - u16 wr_ch_cnt; - u16 rd_ch_cnt; + u16 ll_wr_cnt; + u16 ll_rd_cnt; /* link list address */ struct dw_edma_region ll_region_wr[EDMA_MAX_WR_CH]; struct dw_edma_region ll_region_rd[EDMA_MAX_RD_CH]; -- 2.35.1