From 3e75241be8081f22f7382f4041496b10a4d9aed0 Mon Sep 17 00:00:00 2001 From: Chuhong Yuan Date: Thu, 25 Jul 2019 16:01:55 +0800 Subject: hwrng: drivers - Use device-managed registration API MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Use devm_hwrng_register to simplify the implementation. Manual unregistration and some remove functions can be removed now. Signed-off-by: Chuhong Yuan Acked-by: Łukasz Stelmach Acked-by: Ludovic Desroches Signed-off-by: Herbert Xu --- drivers/char/hw_random/atmel-rng.c | 3 +-- drivers/char/hw_random/cavium-rng-vf.c | 11 +---------- drivers/char/hw_random/exynos-trng.c | 3 +-- drivers/char/hw_random/n2-drv.c | 4 +--- drivers/char/hw_random/nomadik-rng.c | 3 +-- drivers/char/hw_random/omap-rng.c | 3 +-- drivers/char/hw_random/powernv-rng.c | 10 +--------- drivers/char/hw_random/st-rng.c | 4 +--- drivers/char/hw_random/xgene-rng.c | 4 +--- 9 files changed, 9 insertions(+), 36 deletions(-) (limited to 'drivers/char') diff --git a/drivers/char/hw_random/atmel-rng.c b/drivers/char/hw_random/atmel-rng.c index 433426242b87..e55705745d5e 100644 --- a/drivers/char/hw_random/atmel-rng.c +++ b/drivers/char/hw_random/atmel-rng.c @@ -86,7 +86,7 @@ static int atmel_trng_probe(struct platform_device *pdev) trng->rng.name = pdev->name; trng->rng.read = atmel_trng_read; - ret = hwrng_register(&trng->rng); + ret = devm_hwrng_register(&pdev->dev, &trng->rng); if (ret) goto err_register; @@ -103,7 +103,6 @@ static int atmel_trng_remove(struct platform_device *pdev) { struct atmel_trng *trng = platform_get_drvdata(pdev); - hwrng_unregister(&trng->rng); atmel_trng_disable(trng); clk_disable_unprepare(trng->clk); diff --git a/drivers/char/hw_random/cavium-rng-vf.c b/drivers/char/hw_random/cavium-rng-vf.c index 2d1352b67168..3de4a6a443ef 100644 --- a/drivers/char/hw_random/cavium-rng-vf.c +++ b/drivers/char/hw_random/cavium-rng-vf.c @@ -67,7 +67,7 @@ static int cavium_rng_probe_vf(struct pci_dev *pdev, pci_set_drvdata(pdev, rng); - ret = hwrng_register(&rng->ops); + ret = devm_hwrng_register(&pdev->dev, &rng->ops); if (ret) { dev_err(&pdev->dev, "Error registering device as HWRNG.\n"); return ret; @@ -76,14 +76,6 @@ static int cavium_rng_probe_vf(struct pci_dev *pdev, return 0; } -/* Remove the VF */ -static void cavium_rng_remove_vf(struct pci_dev *pdev) -{ - struct cavium_rng *rng; - - rng = pci_get_drvdata(pdev); - hwrng_unregister(&rng->ops); -} static const struct pci_device_id cavium_rng_vf_id_table[] = { { PCI_DEVICE(PCI_VENDOR_ID_CAVIUM, 0xa033), 0, 0, 0}, @@ -95,7 +87,6 @@ static struct pci_driver cavium_rng_vf_driver = { .name = "cavium_rng_vf", .id_table = cavium_rng_vf_id_table, .probe = cavium_rng_probe_vf, - .remove = cavium_rng_remove_vf, }; module_pci_driver(cavium_rng_vf_driver); diff --git a/drivers/char/hw_random/exynos-trng.c b/drivers/char/hw_random/exynos-trng.c index 94235761955c..b4b52ab23b6b 100644 --- a/drivers/char/hw_random/exynos-trng.c +++ b/drivers/char/hw_random/exynos-trng.c @@ -153,7 +153,7 @@ static int exynos_trng_probe(struct platform_device *pdev) goto err_clock; } - ret = hwrng_register(&trng->rng); + ret = devm_hwrng_register(&pdev->dev, &trng->rng); if (ret) { dev_err(&pdev->dev, "Could not register hwrng device.\n"); goto err_register; @@ -179,7 +179,6 @@ static int exynos_trng_remove(struct platform_device *pdev) { struct exynos_trng_dev *trng = platform_get_drvdata(pdev); - hwrng_unregister(&trng->rng); clk_disable_unprepare(trng->clk); pm_runtime_put_sync(&pdev->dev); diff --git a/drivers/char/hw_random/n2-drv.c b/drivers/char/hw_random/n2-drv.c index d4cab105796f..2d256b3470db 100644 --- a/drivers/char/hw_random/n2-drv.c +++ b/drivers/char/hw_random/n2-drv.c @@ -768,7 +768,7 @@ static int n2rng_probe(struct platform_device *op) np->hwrng.data_read = n2rng_data_read; np->hwrng.priv = (unsigned long) np; - err = hwrng_register(&np->hwrng); + err = devm_hwrng_register(&pdev->dev, &np->hwrng); if (err) goto out_hvapi_unregister; @@ -793,8 +793,6 @@ static int n2rng_remove(struct platform_device *op) cancel_delayed_work_sync(&np->work); - hwrng_unregister(&np->hwrng); - sun4v_hvapi_unregister(HV_GRP_RNG); return 0; diff --git a/drivers/char/hw_random/nomadik-rng.c b/drivers/char/hw_random/nomadik-rng.c index fc0f6b0cb80d..74ed29f42e4f 100644 --- a/drivers/char/hw_random/nomadik-rng.c +++ b/drivers/char/hw_random/nomadik-rng.c @@ -57,7 +57,7 @@ static int nmk_rng_probe(struct amba_device *dev, const struct amba_id *id) if (!base) goto out_release; nmk_rng.priv = (unsigned long)base; - ret = hwrng_register(&nmk_rng); + ret = devm_hwrng_register(&dev->dev, &nmk_rng); if (ret) goto out_release; return 0; @@ -71,7 +71,6 @@ out_clk: static int nmk_rng_remove(struct amba_device *dev) { - hwrng_unregister(&nmk_rng); amba_release_regions(dev); clk_disable(rng_clk); return 0; diff --git a/drivers/char/hw_random/omap-rng.c b/drivers/char/hw_random/omap-rng.c index e9b6ac61fb7f..b27f39688b5e 100644 --- a/drivers/char/hw_random/omap-rng.c +++ b/drivers/char/hw_random/omap-rng.c @@ -500,7 +500,7 @@ static int omap_rng_probe(struct platform_device *pdev) if (ret) goto err_register; - ret = hwrng_register(&priv->rng); + ret = devm_hwrng_register(&pdev->dev, &priv->rng); if (ret) goto err_register; @@ -525,7 +525,6 @@ static int omap_rng_remove(struct platform_device *pdev) { struct omap_rng_dev *priv = platform_get_drvdata(pdev); - hwrng_unregister(&priv->rng); priv->pdata->cleanup(priv); diff --git a/drivers/char/hw_random/powernv-rng.c b/drivers/char/hw_random/powernv-rng.c index f2e8272e276a..8da1d7917bdc 100644 --- a/drivers/char/hw_random/powernv-rng.c +++ b/drivers/char/hw_random/powernv-rng.c @@ -33,18 +33,11 @@ static struct hwrng powernv_hwrng = { .read = powernv_rng_read, }; -static int powernv_rng_remove(struct platform_device *pdev) -{ - hwrng_unregister(&powernv_hwrng); - - return 0; -} - static int powernv_rng_probe(struct platform_device *pdev) { int rc; - rc = hwrng_register(&powernv_hwrng); + rc = devm_hwrng_register(&pdev->dev, &powernv_hwrng); if (rc) { /* We only register one device, ignore any others */ if (rc == -EEXIST) @@ -70,7 +63,6 @@ static struct platform_driver powernv_rng_driver = { .of_match_table = powernv_rng_match, }, .probe = powernv_rng_probe, - .remove = powernv_rng_remove, }; module_platform_driver(powernv_rng_driver); diff --git a/drivers/char/hw_random/st-rng.c b/drivers/char/hw_random/st-rng.c index bd6a98b3479b..863448360a7d 100644 --- a/drivers/char/hw_random/st-rng.c +++ b/drivers/char/hw_random/st-rng.c @@ -102,7 +102,7 @@ static int st_rng_probe(struct platform_device *pdev) dev_set_drvdata(&pdev->dev, ddata); - ret = hwrng_register(&ddata->ops); + ret = devm_hwrng_register(&pdev->dev, &ddata->ops); if (ret) { dev_err(&pdev->dev, "Failed to register HW RNG\n"); clk_disable_unprepare(clk); @@ -118,8 +118,6 @@ static int st_rng_remove(struct platform_device *pdev) { struct st_rng_data *ddata = dev_get_drvdata(&pdev->dev); - hwrng_unregister(&ddata->ops); - clk_disable_unprepare(ddata->clk); return 0; diff --git a/drivers/char/hw_random/xgene-rng.c b/drivers/char/hw_random/xgene-rng.c index 8c6f9f63da5e..7e568db87ae2 100644 --- a/drivers/char/hw_random/xgene-rng.c +++ b/drivers/char/hw_random/xgene-rng.c @@ -361,7 +361,7 @@ static int xgene_rng_probe(struct platform_device *pdev) xgene_rng_func.priv = (unsigned long) ctx; - rc = hwrng_register(&xgene_rng_func); + rc = devm_hwrng_register(&pdev->dev, &xgene_rng_func); if (rc) { dev_err(&pdev->dev, "RNG registering failed error %d\n", rc); if (!IS_ERR(ctx->clk)) @@ -375,7 +375,6 @@ static int xgene_rng_probe(struct platform_device *pdev) rc); if (!IS_ERR(ctx->clk)) clk_disable_unprepare(ctx->clk); - hwrng_unregister(&xgene_rng_func); return rc; } @@ -392,7 +391,6 @@ static int xgene_rng_remove(struct platform_device *pdev) dev_err(&pdev->dev, "RNG init wakeup failed error %d\n", rc); if (!IS_ERR(ctx->clk)) clk_disable_unprepare(ctx->clk); - hwrng_unregister(&xgene_rng_func); return rc; } -- cgit