kernel.git/drivers/char/hw_random, branch linux-4.7.y

hwrng: omap - Fix assumption that runtime_get_sync will always succeed

2016-10-07T13:21:22Z

commit 61dc0a446e5d08f2de8a24b45f69a1e302bb1b1b upstream. pm_runtime_get_sync does return a error value that must be checked for error conditions, else, due to various reasons, the device maynot be enabled and the system will crash due to lack of clock to the hardware module. Before: 12.562784] [00000000] *pgd=fe193835 12.562792] Internal error: : 1406 [#1] SMP ARM [...] 12.562864] CPU: 1 PID: 241 Comm: modprobe Not tainted 4.7.0-rc4-next-20160624 #2 12.562867] Hardware name: Generic DRA74X (Flattened Device Tree) 12.562872] task: ed51f140 ti: ed44c000 task.ti: ed44c000 12.562886] PC is at omap4_rng_init+0x20/0x84 [omap_rng] 12.562899] LR is at set_current_rng+0xc0/0x154 [rng_core] [...] After the proper checks: [ 94.366705] omap_rng 48090000.rng: _od_fail_runtime_resume: FIXME: missing hwmod/omap_dev info [ 94.375767] omap_rng 48090000.rng: Failed to runtime_get device -19 [ 94.382351] omap_rng 48090000.rng: initialization failed. Fixes: 665d92fa85b5 ("hwrng: OMAP: convert to use runtime PM") Cc: Paul Walmsley Signed-off-by: Nishanth Menon Signed-off-by: Herbert Xu Signed-off-by: Greg Kroah-Hartman

crypto4xx: integrate ppc4xx-rng into crypto4xx

2016-04-20T09:50:02Z

This patch integrates the ppc4xx-rng driver into the existing crypto4xx. This is because the true random number generator is controlled and part of the security core. Signed-off-by: Christian Lamparter Signed-off-by: Herbert Xu

hwrng: hisi - Add support for Hisilicon SoC RNG

2016-04-15T14:36:36Z

This adds the Hisilicon Random Number Generator(RNG) support, which is found in Hip04 and Hip05 soc. Reviewed-by: Mathieu Poirier Signed-off-by: Kefeng Wang Signed-off-by: Herbert Xu

hwrng: exynos - Fix misspelled Samsung address

2016-04-05T12:35:54Z

Correct smasung.com into samsung.com. Signed-off-by: Krzysztof Kozlowski Signed-off-by: Herbert Xu

hwrng: exynos - Enable COMPILE_TEST

2016-04-05T12:35:44Z

Get some build coverage of Exynos H/W random number generator driver. Driver uses devm_ioremap_resource() so add IOMEM dependency for the compile testing. Signed-off-by: Krzysztof Kozlowski Signed-off-by: Herbert Xu

hwrng: exynos - Disable runtime PM on driver unbind

2016-04-05T12:35:43Z

Driver enabled runtime PM but did not revert this on removal. Re-binding of a device triggered warning: exynos-rng 10830400.rng: Unbalanced pm_runtime_enable! Fixes: b329669ea0b5 ("hwrng: exynos - Add support for Exynos random number generator") Signed-off-by: Krzysztof Kozlowski Signed-off-by: Herbert Xu

hwrng: exynos - Disable runtime PM on probe failure

2016-04-05T12:35:43Z

Add proper error path (for disabling runtime PM) when registering of hwrng fails. Fixes: b329669ea0b5 ("hwrng: exynos - Add support for Exynos random number generator") Signed-off-by: Krzysztof Kozlowski Signed-off-by: Herbert Xu

hwrng: exynos - Fix unbalanced PM runtime put on timeout error path

2016-04-05T12:35:43Z

In case of timeout during read operation, the exit path lacked PM runtime put. This could lead to unbalanced runtime PM usage counter thus leaving the device in an active state. Fixes: d7fd6075a205 ("hwrng: exynos - Add timeout for waiting on init done") Cc: # v4.4+ Signed-off-by: Krzysztof Kozlowski Signed-off-by: Herbert Xu

hwrng: exynos - Runtime suspend device after init

2016-04-05T12:35:42Z

The driver uses pm_runtime_put_noidle() after initialization so the device might remain in active state if the core does not read from it (the read callback contains regular runtime put). The put_noidle() was chosen probably to avoid unneeded suspend and resume cycle after the initialization. However for this purpose autosuspend is enabled so it is safe to runtime put just after the initialization. Signed-off-by: Krzysztof Kozlowski Signed-off-by: Herbert Xu

hwrng: bcm63xx - fix device tree compilation

2016-04-05T12:23:11Z

Adds missing include that resulted in implicit device tree functions errors. Fixes: 7b651706712b ("hwrng: bcm63xx - add device tree support") Signed-off-by: Álvaro Fernández Rojas Signed-off-by: Herbert Xu