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authorHsin-Yi Wang <hsinyi@chromium.org>2019-08-27 18:33:53 +0800
committerWill Deacon <will@kernel.org>2019-08-27 12:27:07 +0100
commitdd753d961c4844a39f947be115b3d81e10376ee5 (patch)
tree40ea14a72f4888128dd8b31133e8db566e94f2a2 /drivers/of
parent7f591fa7a62d3a3f585fd4ba5c3e7b05f4b931be (diff)
fdt: Update CRC check for rng-seed
Commit 428826f5358c ("fdt: add support for rng-seed") moves of_fdt_crc32 from early_init_dt_verify() to early_init_dt_scan() since early_init_dt_scan_chosen() may modify fdt to erase rng-seed. However, arm and some other arch won't call early_init_dt_scan(), they call early_init_dt_verify() then early_init_dt_scan_nodes(). Restore of_fdt_crc32 to early_init_dt_verify() then update it in early_init_dt_scan_chosen() if fdt if updated. Fixes: 428826f5358c ("fdt: add support for rng-seed") Reported-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Hsin-Yi Wang <hsinyi@chromium.org> Tested-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'drivers/of')
-rw-r--r--drivers/of/fdt.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c
index 7d97ab6d0e31..223d617ecfe1 100644
--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c
@@ -1086,6 +1086,10 @@ int __init early_init_dt_scan_chosen(unsigned long node, const char *uname,
/* 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 */
@@ -1176,6 +1180,8 @@ bool __init early_init_dt_verify(void *params)
/* Setup flat device-tree pointer */
initial_boot_params = params;
+ of_fdt_crc32 = crc32_be(~0, initial_boot_params,
+ fdt_totalsize(initial_boot_params));
return true;
}
@@ -1205,8 +1211,6 @@ bool __init early_init_dt_scan(void *params)
return false;
early_init_dt_scan_nodes();
- of_fdt_crc32 = crc32_be(~0, initial_boot_params,
- fdt_totalsize(initial_boot_params));
return true;
}