epfile->ep is protected by ffs->eps_lock (not epfile->mutex) so clear it
while holding the spin lock.
Signed-off-by: Michal Nazarewicz <min...@mina86.com>
---
drivers/usb/gadget/function/f_fs.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/usb/gadget/function/f_fs.c
b/drivers/usb/gadget/function/f_fs.c
index 0aeed85..759f5d4 100644
--- a/drivers/usb/gadget/function/f_fs.c
+++ b/drivers/usb/gadget/function/f_fs.c
@@ -1725,17 +1725,17 @@ static void ffs_func_eps_disable(struct ffs_function
*func)
unsigned long flags;
do {
- if (epfile)
- mutex_lock(&epfile->mutex);
spin_lock_irqsave(&func->ffs->eps_lock, flags);
/* pending requests get nuked */
if (likely(ep->ep))
usb_ep_disable(ep->ep);
++ep;
+ if (epfile)
+ epfile->ep = NULL;
spin_unlock_irqrestore(&func->ffs->eps_lock, flags);
if (epfile) {
- epfile->ep = NULL;
+ mutex_lock(&epfile->mutex);
kfree(epfile->read_buffer);
epfile->read_buffer = NULL;
mutex_unlock(&epfile->mutex);
--
2.8.0.rc3.226.g39d4020
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