This patch fixes breakage of of_find_node_by_path when
node not found in tree. This fault is caused, for example,
when no aliases is present in dtb.
barebox@ConnectCore i.MX51:/ oftree -d /env/mm.dtb
/ {
model = "Freescale i.MX51 CCMX51";
compatible = "fsl,imx51-ccmx51", "fsl,imx51";
chosen {
};
cpus {
cpu@0 {
compatible = "arm,cortex-a8";
};
};
};
barebox@ConnectCore i.MX51:/ oftree -p /env/mm.dtb
unable to handle NULL pointer dereference at address 0x00000000
pc : [<97f1f3f0>] lr : [<97f19438>]
sp : 95eff988 ip : 00000001 fp : 97f43080
r10: 00000000 r9 : 97f4304c r8 : 00000000
r7 : 00000000 r6 : e3510034 r5 : 00000001 r4 : 95f0eb28
r3 : 97f43054 r2 : 00000000 r1 : e1a0000b r0 : 00000000
Flags: nzCv IRQs off FIQs off Mode SVC_32
no stack data available
Signed-off-by: Alexander Shiyan <shc_work@xxxxxxx>
---
drivers/of/base.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/of/base.c b/drivers/of/base.c
index 7a41618..576841d 100644
--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -487,9 +487,9 @@ struct device_node *of_find_node_by_path(const char *path)
list_for_each_entry(np, &allnodes, list) {
if (np->full_name && (strcmp(np->full_name, path) == 0))
- break;
+ return np;
}
- return np;
+ return NULL;
}
EXPORT_SYMBOL(of_find_node_by_path);
--
1.7.3.4
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