Re: [PATCH 1/3] hwrng: msm - Move hwrng to a table
From: Stephen Boyd <hidden>
Date: 2018-06-18 15:58:32
Also in:
linux-arm-msm, lkml
Quoting Vinod Koul (2018-06-18 07:12:57)
quoted hunk ↗ jump to hunk
@@ -127,6 +125,13 @@ static void msm_rng_cleanup(struct hwrng *hwrng) msm_rng_enable(hwrng, 0); } +static struct hwrng msm_rng = { + .name = KBUILD_MODNAME, + .init = msm_rng_init, + .cleanup = msm_rng_cleanup, + .read = msm_rng_read, +}; + static int msm_rng_probe(struct platform_device *pdev) { struct resource *res;@@ -148,12 +153,10 @@ static int msm_rng_probe(struct platform_device *pdev) if (IS_ERR(rng->clk)) return PTR_ERR(rng->clk); - rng->hwrng.name = KBUILD_MODNAME, - rng->hwrng.init = msm_rng_init, - rng->hwrng.cleanup = msm_rng_cleanup,
Wouldn't it be a lot easier to skip assigning the init and cleanup functions on v2 devices with an if statement? It would be smaller size wise too because then we don't have two structs for v1 and v2 hwrngs. Plus the patch would be smaller overall because we would do everything else pretty much the same besides the if condition in probe.
- rng->hwrng.read = msm_rng_read,
+ rng->hwrng = &msm_rng;
- ret = devm_hwrng_register(&pdev->dev, &rng->hwrng);
+ rng->hwrng->priv = (unsigned long)rng;
+ ret = devm_hwrng_register(&pdev->dev, rng->hwrng);
if (ret) {
dev_err(&pdev->dev, "failed to register hwrng\n");
return ret;
--
2.14.4