[media] media/rc: fix oops on unloading module rc-core
During modiles initialization rc-core schedules work which calls
request_module() several times to load ir-*-decoder modules, but
it does not wait or cancel this work on module unloading.
rc-core should use request_module_nowait() instead, because it
anyway cannot load modules synchronously or cancel/wait pending
work on unloading, because this leads to deadlock on modules_mutex
between several "modprobe" processes.
Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/rc/rc-core-priv.h b/drivers/media/rc/rc-core-priv.h
index 96f0a8b..5d87287 100644
--- a/drivers/media/rc/rc-core-priv.h
+++ b/drivers/media/rc/rc-core-priv.h
@@ -165,56 +165,56 @@
/* from ir-nec-decoder.c */
#ifdef CONFIG_IR_NEC_DECODER_MODULE
-#define load_nec_decode() request_module("ir-nec-decoder")
+#define load_nec_decode() request_module_nowait("ir-nec-decoder")
#else
static inline void load_nec_decode(void) { }
#endif
/* from ir-rc5-decoder.c */
#ifdef CONFIG_IR_RC5_DECODER_MODULE
-#define load_rc5_decode() request_module("ir-rc5-decoder")
+#define load_rc5_decode() request_module_nowait("ir-rc5-decoder")
#else
static inline void load_rc5_decode(void) { }
#endif
/* from ir-rc6-decoder.c */
#ifdef CONFIG_IR_RC6_DECODER_MODULE
-#define load_rc6_decode() request_module("ir-rc6-decoder")
+#define load_rc6_decode() request_module_nowait("ir-rc6-decoder")
#else
static inline void load_rc6_decode(void) { }
#endif
/* from ir-jvc-decoder.c */
#ifdef CONFIG_IR_JVC_DECODER_MODULE
-#define load_jvc_decode() request_module("ir-jvc-decoder")
+#define load_jvc_decode() request_module_nowait("ir-jvc-decoder")
#else
static inline void load_jvc_decode(void) { }
#endif
/* from ir-sony-decoder.c */
#ifdef CONFIG_IR_SONY_DECODER_MODULE
-#define load_sony_decode() request_module("ir-sony-decoder")
+#define load_sony_decode() request_module_nowait("ir-sony-decoder")
#else
static inline void load_sony_decode(void) { }
#endif
/* from ir-sanyo-decoder.c */
#ifdef CONFIG_IR_SANYO_DECODER_MODULE
-#define load_sanyo_decode() request_module("ir-sanyo-decoder")
+#define load_sanyo_decode() request_module_nowait("ir-sanyo-decoder")
#else
static inline void load_sanyo_decode(void) { }
#endif
/* from ir-mce_kbd-decoder.c */
#ifdef CONFIG_IR_MCE_KBD_DECODER_MODULE
-#define load_mce_kbd_decode() request_module("ir-mce_kbd-decoder")
+#define load_mce_kbd_decode() request_module_nowait("ir-mce_kbd-decoder")
#else
static inline void load_mce_kbd_decode(void) { }
#endif
/* from ir-lirc-codec.c */
#ifdef CONFIG_IR_LIRC_CODEC_MODULE
-#define load_lirc_codec() request_module("ir-lirc-codec")
+#define load_lirc_codec() request_module_nowait("ir-lirc-codec")
#else
static inline void load_lirc_codec(void) { }
#endif