If the device tree pointer is NULL, early_init_dt_verify() fails, leaving
initial_boot_params unchanged. If the device tree pointer is non-NULL but
invalid, early_init_dt_verify() again fails but this time it also clears
initial_boot_params.
Leave initial_boot_params unchanged if the device tree pointer is invalid.
This doesn't fix a bug, but it makes the behavior more consistent and
easier to analyze.
Signed-off-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
---
drivers/of/fdt.c | 9 +++------
1 file changed, 3 insertions(+), 6 deletions(-)
diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c
index d1ffca8b34ea..55a566a53f36 100644
--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c
@@ -994,15 +994,12 @@ bool __init early_init_dt_verify(void *params)
if (!params)
return false;
- /* Setup flat device-tree pointer */
- initial_boot_params = params;
-
/* check device tree validity */
- if (fdt_check_header(params)) {
- initial_boot_params = NULL;
+ if (fdt_check_header(params))
return false;
- }
+ /* Setup flat device-tree pointer */
+ initial_boot_params = params;
return true;
}
--
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