iio: magnetometer: ak8974: add_device_randomness (serial number) (408cc6eb) · Commits · 戴 / test

Mix device-specific data into randomness pool. Signed-off-by:

drivers/iio/magnetometer/ak8974.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -20,6 +20,7 @@
		#include <linux/mutex.h>
		#include <linux/delay.h>
		#include <linux/bitops.h>
		#include <linux/random.h>
		#include <linux/regmap.h>
		#include <linux/regulator/consumer.h>
		#include <linux/pm_runtime.h>
		@@ -470,6 +471,7 @@ static int ak8974_detect(struct ak8974 *ak8974)
		ret = ak8974_get_u16_val(ak8974, AMI305_SN, &sn);
		if (ret)
		return ret;
		add_device_randomness(&sn, sizeof(sn));
		dev_info(&ak8974->i2c->dev,
		"detected %s, FW ver %02x, S/N: %04x\n",
		name, fw, sn);