Since d6a0143985489e470a118605352f4b18df0ce142
usb: gadget: move the global the_dev variable to their users
"the_dev" variable can be used as a "setup done" flag; non-NULL
meaning "setup done", NULL meaning "setup not done". Moreover,
gether_cleanup() can be safely called with a NULL argument.
Corrected a comment to be consistent with the code.
Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@xxxxxxxxxxx>
Signed-off-by: Kyungmin Park <kyungmin.park@xxxxxxxxxxx>
Acked-by: Michal Nazarewicz <mina86@xxxxxxxxxx>
---
drivers/usb/gadget/g_ffs.c | 13 +++++--------
1 files changed, 5 insertions(+), 8 deletions(-)
diff --git a/drivers/usb/gadget/g_ffs.c b/drivers/usb/gadget/g_ffs.c
index 2344efe..e954082 100644
--- a/drivers/usb/gadget/g_ffs.c
+++ b/drivers/usb/gadget/g_ffs.c
@@ -182,7 +182,6 @@ static __refdata struct usb_composite_driver gfs_driver = {
static DEFINE_MUTEX(gfs_lock);
static unsigned int missing_funcs;
-static bool gfs_ether_setup;
static bool gfs_registered;
static bool gfs_single_func;
static struct gfs_ffs_obj *ffs_tab;
@@ -364,7 +363,6 @@ static int gfs_bind(struct usb_composite_dev *cdev)
ret = PTR_ERR(the_dev);
goto error_quick;
}
- gfs_ether_setup = true;
ret = usb_string_ids_tab(cdev, gfs_strings);
if (unlikely(ret < 0))
@@ -401,8 +399,8 @@ error_unbind:
functionfs_unbind(ffs_tab[i].ffs_data);
error:
gether_cleanup(the_dev);
+ the_dev = NULL;
error_quick:
- gfs_ether_setup = false;
return ret;
}
@@ -415,18 +413,17 @@ static int gfs_unbind(struct usb_composite_dev *cdev)
ENTER();
+ gether_cleanup(the_dev);
+ the_dev = NULL;
+
/*
* We may have been called in an error recovery from
* composite_bind() after gfs_unbind() failure so we need to
- * check if gfs_ffs_data is not NULL since gfs_bind() handles
+ * check if instance's ffs_data is not NULL since gfs_bind() handles
* all error recovery itself. I'd rather we werent called
* from composite on orror recovery, but what you're gonna
* do...?
*/
- if (gfs_ether_setup)
- gether_cleanup(the_dev);
- gfs_ether_setup = false;
-
for (i = func_num; i--; )
if (ffs_tab[i].ffs_data)
functionfs_unbind(ffs_tab[i].ffs_data);
--
1.7.0.4
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