MIPS: APRP: Unregister rtlx interrupt hook at module exit

If the aprp_hook is not assigned back to NULL, it will still be called
after module exits. This is not wanted.

Reviewed-by: Steven J. Hill <Steven.Hill@imgtec.com>
Signed-off-by: Deng-Cheng Zhu <dengcheng.zhu@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: john@phrozen.org
Patchwork: https://patchwork.linux-mips.org/patch/6590/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

2 files changed, 6 insertions, 0 deletions

diff --git a/arch/mips/kernel/rtlx-cmp.c b/arch/mips/kernel/rtlx-cmp.c
index 56dc69635153..758fb3cd2326 100644
--- a/arch/mips/kernel/rtlx-cmp.c
+++ b/arch/mips/kernel/rtlx-cmp.c
@@ -112,5 +112,8 @@ void __exit rtlx_module_exit(void)
 
         for (i = 0; i < RTLX_CHANNELS; i++)
                 device_destroy(mt_class, MKDEV(major, i));
+
         unregister_chrdev(major, RTLX_MODULE_NAME);
+
+        aprp_hook = NULL;
 }
diff --git a/arch/mips/kernel/rtlx-mt.c b/arch/mips/kernel/rtlx-mt.c
index 91d61ba422b4..9c1aca00fd54 100644
--- a/arch/mips/kernel/rtlx-mt.c
+++ b/arch/mips/kernel/rtlx-mt.c
@@ -144,5 +144,8 @@ void __exit rtlx_module_exit(void)
 
         for (i = 0; i < RTLX_CHANNELS; i++)
                 device_destroy(mt_class, MKDEV(major, i));
+
         unregister_chrdev(major, RTLX_MODULE_NAME);
+
+        aprp_hook = NULL;
 }