DMA-API: usb: musb: use platform_device_register_full() to avoid directly messing with dma masks
Use platform_device_register_full() for those drivers which can, to avoid messing directly with DMA masks. This can only be done when the driver does not need to access the allocated musb platform device from within its callbacks, which may be called during the musb device probing. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King
parent
27c1789ca6
commit
460d47db9d
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@ -89,7 +89,6 @@ struct am35x_glue {
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struct clk *phy_clk;
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struct clk *clk;
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};
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#define glue_to_musb(g) platform_get_drvdata(g->musb)
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/*
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* am35x_musb_enable - enable interrupts
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@ -452,14 +451,18 @@ static const struct musb_platform_ops am35x_ops = {
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.set_vbus = am35x_musb_set_vbus,
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};
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static u64 am35x_dmamask = DMA_BIT_MASK(32);
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static const struct platform_device_info am35x_dev_info = {
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.name = "musb-hdrc",
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.id = PLATFORM_DEVID_AUTO,
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.dma_mask = DMA_BIT_MASK(32),
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};
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static int am35x_probe(struct platform_device *pdev)
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{
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struct musb_hdrc_platform_data *pdata = dev_get_platdata(&pdev->dev);
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struct platform_device *musb;
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struct am35x_glue *glue;
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struct platform_device_info pinfo;
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struct clk *phy_clk;
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struct clk *clk;
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@ -471,12 +474,6 @@ static int am35x_probe(struct platform_device *pdev)
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goto err0;
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}
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musb = platform_device_alloc("musb-hdrc", PLATFORM_DEVID_AUTO);
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if (!musb) {
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dev_err(&pdev->dev, "failed to allocate musb device\n");
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goto err1;
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}
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phy_clk = clk_get(&pdev->dev, "fck");
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if (IS_ERR(phy_clk)) {
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dev_err(&pdev->dev, "failed to get PHY clock\n");
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@ -503,12 +500,7 @@ static int am35x_probe(struct platform_device *pdev)
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goto err6;
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}
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musb->dev.parent = &pdev->dev;
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musb->dev.dma_mask = &am35x_dmamask;
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musb->dev.coherent_dma_mask = am35x_dmamask;
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glue->dev = &pdev->dev;
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glue->musb = musb;
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glue->phy_clk = phy_clk;
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glue->clk = clk;
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@ -516,22 +508,17 @@ static int am35x_probe(struct platform_device *pdev)
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platform_set_drvdata(pdev, glue);
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ret = platform_device_add_resources(musb, pdev->resource,
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pdev->num_resources);
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if (ret) {
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dev_err(&pdev->dev, "failed to add resources\n");
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goto err7;
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}
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pinfo = am35x_dev_info;
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pinfo.parent = &pdev->dev;
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pinfo.res = pdev->resource;
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pinfo.num_res = pdev->num_resources;
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pinfo.data = pdata;
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pinfo.size_data = sizeof(*pdata);
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ret = platform_device_add_data(musb, pdata, sizeof(*pdata));
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if (ret) {
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dev_err(&pdev->dev, "failed to add platform_data\n");
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goto err7;
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}
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ret = platform_device_add(musb);
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if (ret) {
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dev_err(&pdev->dev, "failed to register musb device\n");
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glue->musb = musb = platform_device_register_full(&pinfo);
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if (IS_ERR(musb)) {
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ret = PTR_ERR(musb);
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dev_err(&pdev->dev, "failed to register musb device: %d\n", ret);
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goto err7;
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}
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@ -550,9 +537,6 @@ err4:
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clk_put(phy_clk);
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err3:
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platform_device_put(musb);
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err1:
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kfree(glue);
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err0:
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@ -472,7 +472,11 @@ static const struct musb_platform_ops da8xx_ops = {
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.set_vbus = da8xx_musb_set_vbus,
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};
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static u64 da8xx_dmamask = DMA_BIT_MASK(32);
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static const struct platform_device_info da8xx_dev_info = {
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.name = "musb-hdrc",
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.id = PLATFORM_DEVID_AUTO,
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.dma_mask = DMA_BIT_MASK(32),
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};
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static int da8xx_probe(struct platform_device *pdev)
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{
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@ -480,7 +484,7 @@ static int da8xx_probe(struct platform_device *pdev)
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struct musb_hdrc_platform_data *pdata = dev_get_platdata(&pdev->dev);
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struct platform_device *musb;
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struct da8xx_glue *glue;
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struct platform_device_info pinfo;
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struct clk *clk;
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int ret = -ENOMEM;
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@ -491,12 +495,6 @@ static int da8xx_probe(struct platform_device *pdev)
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goto err0;
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}
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musb = platform_device_alloc("musb-hdrc", PLATFORM_DEVID_AUTO);
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if (!musb) {
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dev_err(&pdev->dev, "failed to allocate musb device\n");
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goto err1;
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}
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clk = clk_get(&pdev->dev, "usb20");
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if (IS_ERR(clk)) {
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dev_err(&pdev->dev, "failed to get clock\n");
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@ -510,12 +508,7 @@ static int da8xx_probe(struct platform_device *pdev)
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goto err4;
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}
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musb->dev.parent = &pdev->dev;
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musb->dev.dma_mask = &da8xx_dmamask;
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musb->dev.coherent_dma_mask = da8xx_dmamask;
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glue->dev = &pdev->dev;
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glue->musb = musb;
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glue->clk = clk;
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pdata->platform_ops = &da8xx_ops;
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@ -535,22 +528,17 @@ static int da8xx_probe(struct platform_device *pdev)
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musb_resources[1].end = pdev->resource[1].end;
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musb_resources[1].flags = pdev->resource[1].flags;
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ret = platform_device_add_resources(musb, musb_resources,
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ARRAY_SIZE(musb_resources));
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if (ret) {
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dev_err(&pdev->dev, "failed to add resources\n");
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goto err5;
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}
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pinfo = da8xx_dev_info;
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pinfo.parent = &pdev->dev;
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pinfo.res = musb_resources;
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pinfo.num_res = ARRAY_SIZE(musb_resources);
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pinfo.data = pdata;
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pinfo.size_data = sizeof(*pdata);
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ret = platform_device_add_data(musb, pdata, sizeof(*pdata));
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if (ret) {
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dev_err(&pdev->dev, "failed to add platform_data\n");
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goto err5;
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}
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ret = platform_device_add(musb);
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if (ret) {
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dev_err(&pdev->dev, "failed to register musb device\n");
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glue->musb = musb = platform_device_register_full(&pinfo);
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if (IS_ERR(musb)) {
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ret = PTR_ERR(musb);
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dev_err(&pdev->dev, "failed to register musb device: %d\n", ret);
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goto err5;
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}
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@ -563,9 +551,6 @@ err4:
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clk_put(clk);
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err3:
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platform_device_put(musb);
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err1:
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kfree(glue);
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err0:
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@ -505,7 +505,11 @@ static const struct musb_platform_ops davinci_ops = {
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.set_vbus = davinci_musb_set_vbus,
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};
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static u64 davinci_dmamask = DMA_BIT_MASK(32);
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static const struct platform_device_info davinci_dev_info = {
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.name = "musb-hdrc",
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.id = PLATFORM_DEVID_AUTO,
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.dma_mask = DMA_BIT_MASK(32),
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};
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static int davinci_probe(struct platform_device *pdev)
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{
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@ -513,6 +517,7 @@ static int davinci_probe(struct platform_device *pdev)
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struct musb_hdrc_platform_data *pdata = dev_get_platdata(&pdev->dev);
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struct platform_device *musb;
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struct davinci_glue *glue;
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struct platform_device_info pinfo;
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struct clk *clk;
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int ret = -ENOMEM;
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@ -523,12 +528,6 @@ static int davinci_probe(struct platform_device *pdev)
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goto err0;
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}
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musb = platform_device_alloc("musb-hdrc", PLATFORM_DEVID_AUTO);
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if (!musb) {
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dev_err(&pdev->dev, "failed to allocate musb device\n");
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goto err1;
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}
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clk = clk_get(&pdev->dev, "usb");
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if (IS_ERR(clk)) {
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dev_err(&pdev->dev, "failed to get clock\n");
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@ -542,12 +541,7 @@ static int davinci_probe(struct platform_device *pdev)
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goto err4;
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}
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musb->dev.parent = &pdev->dev;
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musb->dev.dma_mask = &davinci_dmamask;
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musb->dev.coherent_dma_mask = davinci_dmamask;
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glue->dev = &pdev->dev;
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glue->musb = musb;
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glue->clk = clk;
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pdata->platform_ops = &davinci_ops;
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@ -567,22 +561,17 @@ static int davinci_probe(struct platform_device *pdev)
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musb_resources[1].end = pdev->resource[1].end;
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musb_resources[1].flags = pdev->resource[1].flags;
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ret = platform_device_add_resources(musb, musb_resources,
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ARRAY_SIZE(musb_resources));
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if (ret) {
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dev_err(&pdev->dev, "failed to add resources\n");
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goto err5;
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}
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pinfo = davinci_dev_info;
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pinfo.parent = &pdev->dev;
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pinfo.res = musb_resources;
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pinfo.num_res = ARRAY_SIZE(musb_resources);
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pinfo.data = pdata;
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pinfo.size_data = sizeof(*pdata);
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ret = platform_device_add_data(musb, pdata, sizeof(*pdata));
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if (ret) {
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dev_err(&pdev->dev, "failed to add platform_data\n");
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goto err5;
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}
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ret = platform_device_add(musb);
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if (ret) {
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dev_err(&pdev->dev, "failed to register musb device\n");
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glue->musb = musb = platform_device_register_full(&pinfo);
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if (IS_ERR(musb)) {
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ret = PTR_ERR(musb);
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dev_err(&pdev->dev, "failed to register musb device: %d\n", ret);
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goto err5;
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}
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@ -595,9 +584,6 @@ err4:
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clk_put(clk);
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err3:
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platform_device_put(musb);
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err1:
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kfree(glue);
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err0:
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@ -1152,7 +1152,11 @@ static const struct musb_platform_ops tusb_ops = {
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.set_vbus = tusb_musb_set_vbus,
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};
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static u64 tusb_dmamask = DMA_BIT_MASK(32);
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static const struct platform_device_info tusb_dev_info = {
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.name = "musb-hdrc",
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.id = PLATFORM_DEVID_AUTO,
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.dma_mask = DMA_BIT_MASK(32),
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};
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static int tusb_probe(struct platform_device *pdev)
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{
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@ -1160,7 +1164,7 @@ static int tusb_probe(struct platform_device *pdev)
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struct musb_hdrc_platform_data *pdata = dev_get_platdata(&pdev->dev);
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struct platform_device *musb;
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struct tusb6010_glue *glue;
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struct platform_device_info pinfo;
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int ret = -ENOMEM;
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glue = kzalloc(sizeof(*glue), GFP_KERNEL);
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@ -1169,18 +1173,7 @@ static int tusb_probe(struct platform_device *pdev)
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goto err0;
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}
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musb = platform_device_alloc("musb-hdrc", PLATFORM_DEVID_AUTO);
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if (!musb) {
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dev_err(&pdev->dev, "failed to allocate musb device\n");
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goto err1;
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}
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musb->dev.parent = &pdev->dev;
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musb->dev.dma_mask = &tusb_dmamask;
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musb->dev.coherent_dma_mask = tusb_dmamask;
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glue->dev = &pdev->dev;
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glue->musb = musb;
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pdata->platform_ops = &tusb_ops;
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@ -1204,31 +1197,23 @@ static int tusb_probe(struct platform_device *pdev)
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musb_resources[2].end = pdev->resource[2].end;
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musb_resources[2].flags = pdev->resource[2].flags;
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ret = platform_device_add_resources(musb, musb_resources,
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ARRAY_SIZE(musb_resources));
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if (ret) {
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dev_err(&pdev->dev, "failed to add resources\n");
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goto err3;
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}
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pinfo = tusb_dev_info;
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pinfo.parent = &pdev->dev;
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pinfo.res = musb_resources;
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pinfo.num_res = ARRAY_SIZE(musb_resources);
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pinfo.data = pdata;
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pinfo.size_data = sizeof(*pdata);
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ret = platform_device_add_data(musb, pdata, sizeof(*pdata));
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if (ret) {
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dev_err(&pdev->dev, "failed to add platform_data\n");
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goto err3;
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}
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ret = platform_device_add(musb);
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if (ret) {
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dev_err(&pdev->dev, "failed to register musb device\n");
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glue->musb = musb = platform_device_register_full(&pinfo);
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if (IS_ERR(musb)) {
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ret = PTR_ERR(musb);
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dev_err(&pdev->dev, "failed to register musb device: %d\n", ret);
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goto err3;
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}
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return 0;
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err3:
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platform_device_put(musb);
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err1:
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kfree(glue);
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err0:
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