The following commit introduced the debugfs :
40f099e32c2a06bad7d75683421e30fcc74924cd
Author: Markus Pargmann <[email protected]>
Date: Fri Jan 17 10:22:35 2014 +0100
usb: musb: dsps, debugfs files
Unfortunately, a forgotten call to a cleanup function prevents the
probing of musb in case of deferred probe.
Because musb_init_controller() often retries and creates a new debugfs
directory each time it is called, we need to remove that directory in case the
initialization fails. Otherwise, the debugfs_create_dir() fails at
subsequent calls because the directory already exists.
Fixed by calling debugfs_remove_recursive() in the exit function.
Signed-off-by: Olivier Gayot <[email protected]>
Cc: Markus Pargmann <[email protected]>
---
drivers/usb/musb/musb_dsps.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/usb/musb/musb_dsps.c b/drivers/usb/musb/musb_dsps.c
index 3372ded..c3de0a5 100644
--- a/drivers/usb/musb/musb_dsps.c
+++ b/drivers/usb/musb/musb_dsps.c
@@ -471,6 +471,8 @@ static int dsps_musb_exit(struct musb *musb)
del_timer_sync(&glue->timer);
+ debugfs_remove_recursive(glue->dbgfs_root);
+
usb_phy_shutdown(musb->xceiv);
return 0;
}
--
1.7.9.5
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