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hwrng: imx-rngc - use devres for hwrng registration 

Replace hwrng_register with devm_hwrng_register and let devres unregister
our hwrng when the device is removed.

It's possible to do this now that devres also handles clock
disable+uprepare. When we had to disable+unprepare the clock ourselves,
we had to unregister the hwrng before this and couldn't use devres.

There's nothing left to do for imx_rngc_remove, this function can go.

Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Martin Kaiser 2022-08-15 21:37:43 +02:00 committed by Herbert Xu
parent 6a2bc44842
commit d5eb916d88
1 changed files with 1 additions and 11 deletions
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12
drivers/char/hw_random/imx-rngc.c
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@ -292,7 +292,7 @@ static int imx_rngc_probe(struct platform_device *pdev)
}
}
ret = hwrng_register(&rngc->rng);
ret = devm_hwrng_register(&pdev->dev, &rngc->rng);
if (ret) {
dev_err(&pdev->dev, "hwrng registration failed\n");
return ret;
@ -305,15 +305,6 @@ static int imx_rngc_probe(struct platform_device *pdev)
return 0;
}
static int __exit imx_rngc_remove(struct platform_device *pdev)
{
struct imx_rngc *rngc = platform_get_drvdata(pdev);
hwrng_unregister(&rngc->rng);
return 0;
}
static int __maybe_unused imx_rngc_suspend(struct device *dev)
{
struct imx_rngc *rngc = dev_get_drvdata(dev);
@ -346,7 +337,6 @@ static struct platform_driver imx_rngc_driver = {
.pm = &imx_rngc_pm_ops,
.of_match_table = imx_rngc_dt_ids,
},
.remove = __exit_p(imx_rngc_remove),
};
module_platform_driver_probe(imx_rngc_driver, imx_rngc_probe);