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| author | Linus Walleij <linus.walleij@linaro.org> | 2015-06-18 16:46:34 +0200 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2015-07-17 11:50:22 +0200 |
| commit | e8a7d2bb93f8b713b0536ef6f86b745b288fa96f (patch) | |
| tree | 8e0dfb1c48e36da033ebd074907ace98b2c00bb6 /arch/arm/mach-ep93xx | |
| parent | b8824c9a54bb380367541718b50f03cb08524c8d (diff) | |
| download | linux-e8a7d2bb93f8b713b0536ef6f86b745b288fa96f.tar.bz2 | |
ARM: ep93xx: toss the device ID into the entropy pool
It doesn't hurt to add this random stuff into the entropy pool
as is custom to do with device-unique numbers.
Reviewed-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'arch/arm/mach-ep93xx')
| -rw-r--r-- | arch/arm/mach-ep93xx/core.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/arm/mach-ep93xx/core.c b/arch/arm/mach-ep93xx/core.c index 5e2151bcc0c5..c393b1b0310d 100644 --- a/arch/arm/mach-ep93xx/core.c +++ b/arch/arm/mach-ep93xx/core.c @@ -37,6 +37,7 @@ #include <linux/irqchip/arm-vic.h> #include <linux/reboot.h> #include <linux/usb/ohci_pdriver.h> +#include <linux/random.h> #include <mach/hardware.h> #include <linux/platform_data/video-ep93xx.h> @@ -862,6 +863,12 @@ static const char __init *ep93xx_get_soc_id(void) if (id != id2) return "invalid"; + /* Toss the unique ID into the entropy pool */ + add_device_randomness(&id2, 4); + add_device_randomness(&id3, 4); + add_device_randomness(&id4, 4); + add_device_randomness(&id5, 4); + snprintf(ep93xx_soc_id, sizeof(ep93xx_soc_id), "%08x%08x%08x%08x", id2, id3, id4, id5); |