diff options
Diffstat (limited to 'arch/arm/mach-ux500/cpu-db8500.c')
| -rw-r--r-- | arch/arm/mach-ux500/cpu-db8500.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/arm/mach-ux500/cpu-db8500.c b/arch/arm/mach-ux500/cpu-db8500.c index 91f028c1264..5c5ad70e48b 100644 --- a/arch/arm/mach-ux500/cpu-db8500.c +++ b/arch/arm/mach-ux500/cpu-db8500.c @@ -19,6 +19,7 @@ #include <linux/mfd/abx500/ab8500.h> #include <linux/platform_data/usb-musb-ux500.h> #include <linux/platform_data/pinctrl-nomadik.h> +#include <linux/random.h> #include <asm/pmu.h> #include <asm/mach/map.h> @@ -187,6 +188,8 @@ static const char *db8500_read_soc_id(void) { void __iomem *uid = __io_address(U8500_BB_UID_BASE); + /* Throw these device-specific numbers into the entropy pool */ + add_device_randomness(uid, 0x14); return kasprintf(GFP_KERNEL, "%08x%08x%08x%08x%08x", readl((u32 *)uid+1), readl((u32 *)uid+1), readl((u32 *)uid+2), |