net: stmmac: disable/enable ptp_ref_clk in suspend/resume flow

[linux.git] / drivers / of / fdt.c

diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c
index 9cdf14b9aaabe06a4a0dde1029e8d28425287564..223d617ecfe17458207dfc6dfb3c5b9c134d937f 100644 (file)
--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c
@@ -24,6 +24,7 @@
 #include <linux/debugfs.h>
 #include <linux/serial_core.h>
 #include <linux/sysfs.h>
+#include <linux/random.h>
 
 #include <asm/setup.h>  /* for COMMAND_LINE_SIZE */
 #include <asm/page.h>
@@ -1044,6 +1045,7 @@ int __init early_init_dt_scan_chosen(unsigned long node, const char *uname,
 {
        int l;
        const char *p;
+       const void *rng_seed;
 
        pr_debug("search \"chosen\", depth: %d, uname: %s\n", depth, uname);
 
@@ -1078,6 +1080,18 @@ int __init early_init_dt_scan_chosen(unsigned long node, const char *uname,
 
        pr_debug("Command line is: %s\n", (char*)data);
 
+       rng_seed = of_get_flat_dt_prop(node, "rng-seed", &l);
+       if (rng_seed && l > 0) {
+               add_bootloader_randomness(rng_seed, l);
+
+               /* try to clear seed so it won't be found. */
+               fdt_nop_property(initial_boot_params, node, "rng-seed");
+
+               /* update CRC check value */
+               of_fdt_crc32 = crc32_be(~0, initial_boot_params,
+                               fdt_totalsize(initial_boot_params));
+       }
+
        /* break now */
        return 1;
 }