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| author | Gaurav Minocha <gaurav.minocha.os@gmail.com> | 2014-09-05 09:56:13 -0700 |
|---|---|---|
| committer | Grant Likely <grant.likely@linaro.org> | 2014-09-08 15:57:25 +0100 |
| commit | ef69d74035befbddd7c2b7e86120e49191107acc (patch) | |
| tree | 0cd0423d97bbbd8941271c22555a85fb4a9a36b0 /drivers/of/dynamic.c | |
| parent | 5f74d8b7b8546255db6af45b017e9cbb18aed609 (diff) | |
| download | linux-ef69d74035befbddd7c2b7e86120e49191107acc.tar.gz linux-ef69d74035befbddd7c2b7e86120e49191107acc.tar.bz2 linux-ef69d74035befbddd7c2b7e86120e49191107acc.zip | |
of: Disabling OF functions that use sysfs if CONFIG_SYSFS disabled
This patch is to the fix the recent runtime bug in kernel reported by
<fengguang.wu@intel.com>. The bug was exposed by commit b951f9dc,
"Enabling OF selftest to run without machine's devicetree" and is
exposed when CONFIG_OF_SELFTEST is enabled and CONFIG_SYSFS is
disabled.
Mail Subject: [OF test] BUG: unable to handle kernel NULL pointer
dereference at 00000038
Tested on x86 and arm architecture
Signed-off-by: Gaurav Minocha <gaurav.minocha.os@gmail.com>
Signed-off-by: Grant Likely <grant.likely@linaro.org>
Diffstat (limited to 'drivers/of/dynamic.c')
| -rw-r--r-- | drivers/of/dynamic.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/of/dynamic.c b/drivers/of/dynamic.c index 54fecc49a1fe..f297891d8529 100644 --- a/drivers/of/dynamic.c +++ b/drivers/of/dynamic.c @@ -45,6 +45,9 @@ void __of_detach_node_sysfs(struct device_node *np) { struct property *pp; + if (!IS_ENABLED(CONFIG_SYSFS)) + return; + BUG_ON(!of_node_is_initialized(np)); if (!of_kset) return; |