evie/android_kernel_oneplus_msm8998
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

ANDROID: usb: f_fs: Prevent gadget unbind if it is already unbound

Browse source 
Upon usb composition switch there is possibility of ep0 file
release happening after gadget driver bind. In case of composition
switch from adb to a non-adb composition gadget will never gets
bound again resulting into failure of usb device enumeration. Fix
this issue by checking FFS_FL_BOUND flag and avoid extra
gadget driver unbind if it is already done as part of composition
switch.

Change-Id: I1638001ff4a94f08224b188aa42425f3d732fa2b
Signed-off-by: Hemant Kumar <hemantk@codeaurora.org>
This commit is contained in:
Hemant Kumar 2016-08-08 16:20:15 -07:00 • committed by Dmitry Shmidt
parent dac1439669
commit eb4909b080
1 changed files with 2 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

3
drivers/usb/gadget/function/f_fs.c
View file

@ -3490,7 +3490,8 @@ static void ffs_closed(struct ffs_data *ffs)
ci = opts->func_inst.group.cg_item.ci_parent->ci_parent;
ffs_dev_unlock();
unregister_gadget_item(ci);
if (test_bit(FFS_FL_BOUND, &ffs->flags))
unregister_gadget_item(ci);
return;
done:
ffs_dev_unlock();