uwb: don't unbind the radio controller driver when resetting

Use pre_reset and post_reset methods to avoid unbinding the radio
controller driver after a uwb_rc_reset_all() call.  This avoids a
deadlock in uwb_rc_rm() when waiting for the uwb event thread to stop.

Signed-off-by: David Vrabel <david.vrabel@csr.com>

2 files changed, 4 insertions, 0 deletions

diff --git a/include/linux/uwb.h b/include/linux/uwb.h
index 881f0c5..c485484 100644
--- a/include/linux/uwb.h
+++ b/include/linux/uwb.h
@@ -540,6 +540,8 @@ void uwb_rc_rm(struct uwb_rc *);
 void uwb_rc_neh_grok(struct uwb_rc *, void *, size_t);
 void uwb_rc_neh_error(struct uwb_rc *, int);
 void uwb_rc_reset_all(struct uwb_rc *rc);
+void uwb_rc_pre_reset(struct uwb_rc *rc);
+void uwb_rc_post_reset(struct uwb_rc *rc);
 
 /**
  * uwb_rsv_is_owner - is the owner of this reservation the RC?
diff --git a/include/linux/uwb/umc.h b/include/linux/uwb/umc.h
index 36a39e3..4b4fc0f 100644
--- a/include/linux/uwb/umc.h
+++ b/include/linux/uwb/umc.h
@@ -89,6 +89,8 @@ struct umc_driver {
 	void (*remove)(struct umc_dev *);
 	int  (*suspend)(struct umc_dev *, pm_message_t state);
 	int  (*resume)(struct umc_dev *);
+	int  (*pre_reset)(struct umc_dev *);
+	int  (*post_reset)(struct umc_dev *);
 
 	struct device_driver driver;
 };