mm: thp: set the accessed flag for old pages on access fault

[pandora-kernel.git] / drivers / mfd / wm831x-otp.c

diff --git a/drivers/mfd/wm831x-otp.c b/drivers/mfd/wm831x-otp.c
index f742745..b90f3e0 100644 (file)
--- a/drivers/mfd/wm831x-otp.c
+++ b/drivers/mfd/wm831x-otp.c
@@ -18,6 +18,7 @@
 #include <linux/bcd.h>
 #include <linux/delay.h>
 #include <linux/mfd/core.h>
+#include <linux/random.h>
 
 #include <linux/mfd/wm831x/core.h>
 #include <linux/mfd/wm831x/otp.h>
@@ -66,6 +67,7 @@ static DEVICE_ATTR(unique_id, 0444, wm831x_unique_id_show, NULL);
 
 int wm831x_otp_init(struct wm831x *wm831x)
 {
+       char uuid[WM831X_UNIQUE_ID_LEN];
        int ret;
 
        ret = device_create_file(wm831x->dev, &dev_attr_unique_id);
@@ -73,6 +75,12 @@ int wm831x_otp_init(struct wm831x *wm831x)
                dev_err(wm831x->dev, "Unique ID attribute not created: %d\n",
                        ret);
 
+       ret = wm831x_unique_id_read(wm831x, uuid);
+       if (ret == 0)
+               add_device_randomness(uuid, sizeof(uuid));
+       else
+               dev_err(wm831x->dev, "Failed to read UUID: %d\n", ret);
+
        return ret;
 }