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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2018-03-11 13:07:14 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-03-11 13:07:14 -0700 |
| commit | abeb75218aeb5d64e501a9434b81ef833d88c907 (patch) | |
| tree | 6e2f571bce4e9bc120755a9e7ffd8ec9207b48b9 | |
| parent | d43be80a4ab0a7146d2251247e556f9da7bb14cc (diff) | |
| parent | 3cd2c313f1d618f92d1294addc6c685c17065761 (diff) | |
| download | linux-abeb75218aeb5d64e501a9434b81ef833d88c907.tar.gz | |
Merge tag 'dmaengine-fix-4.16-rc5' of git://git.infradead.org/users/vkoul/slave-dma
Pull dmaengine fixes from Vinod Koul: "Two small fixes are for this cycle: - fix max_chunk_size for rcar-dmac for R-Car Gen3 - fix clock resource of mv_xor_v2" * tag 'dmaengine-fix-4.16-rc5' of git://git.infradead.org/users/vkoul/slave-dma: dmaengine: mv_xor_v2: Fix clock resource by adding a register clock dmaengine: rcar-dmac: fix max_chunk_size for R-Car Gen3
| -rw-r--r-- | Documentation/devicetree/bindings/dma/mv-xor-v2.txt | 6 | ||||
| -rw-r--r-- | drivers/dma/mv_xor_v2.c | 25 | ||||
| -rw-r--r-- | drivers/dma/sh/rcar-dmac.c | 2 |
3 files changed, 26 insertions, 7 deletions
diff --git a/Documentation/devicetree/bindings/dma/mv-xor-v2.txt b/Documentation/devicetree/bindings/dma/mv-xor-v2.txt index 217a90eaabe7..9c38bbe7e6d7 100644 --- a/Documentation/devicetree/bindings/dma/mv-xor-v2.txt +++ b/Documentation/devicetree/bindings/dma/mv-xor-v2.txt @@ -11,7 +11,11 @@ Required properties: interrupts. Optional properties: -- clocks: Optional reference to the clock used by the XOR engine. +- clocks: Optional reference to the clocks used by the XOR engine. +- clock-names: mandatory if there is a second clock, in this case the + name must be "core" for the first clock and "reg" for the second + one + Example: diff --git a/drivers/dma/mv_xor_v2.c b/drivers/dma/mv_xor_v2.c index f652a0e0f5a2..3548caa9e933 100644 --- a/drivers/dma/mv_xor_v2.c +++ b/drivers/dma/mv_xor_v2.c @@ -163,6 +163,7 @@ struct mv_xor_v2_device { void __iomem *dma_base; void __iomem *glob_base; struct clk *clk; + struct clk *reg_clk; struct tasklet_struct irq_tasklet; struct list_head free_sw_desc; struct dma_device dmadev; @@ -749,13 +750,26 @@ static int mv_xor_v2_probe(struct platform_device *pdev) if (ret) return ret; + xor_dev->reg_clk = devm_clk_get(&pdev->dev, "reg"); + if (PTR_ERR(xor_dev->reg_clk) != -ENOENT) { + if (!IS_ERR(xor_dev->reg_clk)) { + ret = clk_prepare_enable(xor_dev->reg_clk); + if (ret) + return ret; + } else { + return PTR_ERR(xor_dev->reg_clk); + } + } + xor_dev->clk = devm_clk_get(&pdev->dev, NULL); - if (IS_ERR(xor_dev->clk) && PTR_ERR(xor_dev->clk) == -EPROBE_DEFER) - return -EPROBE_DEFER; + if (IS_ERR(xor_dev->clk) && PTR_ERR(xor_dev->clk) == -EPROBE_DEFER) { + ret = EPROBE_DEFER; + goto disable_reg_clk; + } if (!IS_ERR(xor_dev->clk)) { ret = clk_prepare_enable(xor_dev->clk); if (ret) - return ret; + goto disable_reg_clk; } ret = platform_msi_domain_alloc_irqs(&pdev->dev, 1, @@ -866,8 +880,9 @@ free_hw_desq: free_msi_irqs: platform_msi_domain_free_irqs(&pdev->dev); disable_clk: - if (!IS_ERR(xor_dev->clk)) - clk_disable_unprepare(xor_dev->clk); + clk_disable_unprepare(xor_dev->clk); +disable_reg_clk: + clk_disable_unprepare(xor_dev->reg_clk); return ret; } diff --git a/drivers/dma/sh/rcar-dmac.c b/drivers/dma/sh/rcar-dmac.c index e3ff162c03fc..d0cacdb0713e 100644 --- a/drivers/dma/sh/rcar-dmac.c +++ b/drivers/dma/sh/rcar-dmac.c @@ -917,7 +917,7 @@ rcar_dmac_chan_prep_sg(struct rcar_dmac_chan *chan, struct scatterlist *sgl, rcar_dmac_chan_configure_desc(chan, desc); - max_chunk_size = (RCAR_DMATCR_MASK + 1) << desc->xfer_shift; + max_chunk_size = RCAR_DMATCR_MASK << desc->xfer_shift; /* * Allocate and fill the transfer chunk descriptors. We own the only |