Re: [PATCH] hwrng: Use device-managed registration API
On Thu, Jul 25, 2019 at 04:01:55PM +0800, Chuhong Yuan wrote: > Use devm_hwrng_register to simplify the implementation. > Manual unregistration and some remove functions can be > removed now. > > Signed-off-by: Chuhong Yuan > --- > 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(-) Patch applied. Thanks. -- Email: Herbert Xu Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
Re: [PATCH] hwrng: Use device-managed registration API
On Thu, Jul 25, 2019 at 04:01:55PM +0800, Chuhong Yuan wrote:
> External E-Mail
>
>
> Use devm_hwrng_register to simplify the implementation.
> Manual unregistration and some remove functions can be
> removed now.
>
> Signed-off-by: Chuhong Yuan
> ---
> drivers/char/hw_random/atmel-rng.c | 3 +--
Acked-by: Ludovic Desroches
Thanks
> 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(-)
>
> 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(>rng);
> + ret = devm_hwrng_register(>dev, >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(>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(>ops);
> + ret = devm_hwrng_register(>dev, >ops);
> if (ret) {
> dev_err(>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(>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(>rng);
> + ret = devm_hwrng_register(>dev, >rng);
> if (ret) {
> dev_err(>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(>rng);
> clk_disable_unprepare(trng->clk);
>
> pm_runtime_put_sync(>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(>hwrng);
> + err = devm_hwrng_register(>dev, >hwrng);
> if (err)
> goto out_hvapi_unregister;
>
> @@ -793,8 +793,6 @@ static int n2rng_remove(struct platform_device *op)
>
> cancel_delayed_work_sync(>work);
>
> - hwrng_unregister(>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(_rng);
> + ret =
Re: [PATCH] hwrng: Use device-managed registration API
It was <2019-07-25 czw 10:01>, when Chuhong Yuan wrote:
> Use devm_hwrng_register to simplify the implementation.
> Manual unregistration and some remove functions can be
> removed now.
>
> Signed-off-by: Chuhong Yuan
> ---
> 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(-)
>
Acked-by: Łukasz Stelmach
> 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(>rng);
> + ret = devm_hwrng_register(>dev, >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(>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(>ops);
> + ret = devm_hwrng_register(>dev, >ops);
> if (ret) {
> dev_err(>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(>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(>rng);
> + ret = devm_hwrng_register(>dev, >rng);
> if (ret) {
> dev_err(>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(>rng);
> clk_disable_unprepare(trng->clk);
>
> pm_runtime_put_sync(>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(>hwrng);
> + err = devm_hwrng_register(>dev, >hwrng);
> if (err)
> goto out_hvapi_unregister;
>
> @@ -793,8 +793,6 @@ static int n2rng_remove(struct platform_device *op)
>
> cancel_delayed_work_sync(>work);
>
> - hwrng_unregister(>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(_rng);
> + ret = devm_hwrng_register(>dev, _rng);
> if
[PATCH] hwrng: Use device-managed registration API
Use devm_hwrng_register to simplify the implementation.
Manual unregistration and some remove functions can be
removed now.
Signed-off-by: Chuhong Yuan
---
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(-)
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(>rng);
+ ret = devm_hwrng_register(>dev, >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(>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(>ops);
+ ret = devm_hwrng_register(>dev, >ops);
if (ret) {
dev_err(>dev, "Error registering device as HWRNG.\n");
return ret;
@@ -76,14 +76,6 @@ static int cavium_rng_probe_vf(structpci_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(>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(>rng);
+ ret = devm_hwrng_register(>dev, >rng);
if (ret) {
dev_err(>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(>rng);
clk_disable_unprepare(trng->clk);
pm_runtime_put_sync(>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(>hwrng);
+ err = devm_hwrng_register(>dev, >hwrng);
if (err)
goto out_hvapi_unregister;
@@ -793,8 +793,6 @@ static int n2rng_remove(struct platform_device *op)
cancel_delayed_work_sync(>work);
- hwrng_unregister(>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(_rng);
+ ret = devm_hwrng_register(>dev, _rng);
if (ret)
goto out_release;
return 0;
@@ -71,7 +71,6 @@ static int nmk_rng_probe(struct amba_device *dev, const
struct amba_id *id)
static int nmk_rng_remove(struct amba_device *dev)
{
- hwrng_unregister(_rng);
