linux/drivers/usb/gadget/function
Hemant Kumar ce5bf9a50d usb: f_fs: Prevent gadget unbind if it is already unbound
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.

This fixes adb reconnection error reported on Android running
v4.4 and above kernel versions. Verified on Hikey running vanilla
v4.15-rc7 + few out of tree Mali patches.

Reviewed-at: https://android-review.googlesource.com/#/c/582632/

Cc: Felipe Balbi <balbi@kernel.org>
Cc: Greg KH <gregkh@linux-foundation.org>
Cc: Michal Nazarewicz <mina86@mina86.com>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Dmitry Shmidt <dimitrysh@google.com>
Cc: Badhri <badhri@google.com>
Cc: Android Kernel Team <kernel-team@android.com>
Cc: stable@vger.kernel.org
Signed-off-by: Hemant Kumar <hemantk@codeaurora.org>
[AmitP: Cherry-picked it from android-4.14 and updated the commit log]
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-09 16:18:50 +01:00
..
f_acm.c A couple of configfs cleanups: 2017-11-14 14:44:04 -08:00
f_ecm.c A couple of configfs cleanups: 2017-11-14 14:44:04 -08:00
f_eem.c A couple of configfs cleanups: 2017-11-14 14:44:04 -08:00
f_fs.c usb: f_fs: Prevent gadget unbind if it is already unbound 2018-01-09 16:18:50 +01:00
f_hid.c A couple of configfs cleanups: 2017-11-14 14:44:04 -08:00
f_loopback.c A couple of configfs cleanups: 2017-11-14 14:44:04 -08:00
f_mass_storage.c A couple of configfs cleanups: 2017-11-14 14:44:04 -08:00
f_mass_storage.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
f_midi.c A couple of configfs cleanups: 2017-11-14 14:44:04 -08:00
f_ncm.c A couple of configfs cleanups: 2017-11-14 14:44:04 -08:00
f_obex.c A couple of configfs cleanups: 2017-11-14 14:44:04 -08:00
f_phonet.c A couple of configfs cleanups: 2017-11-14 14:44:04 -08:00
f_printer.c A couple of configfs cleanups: 2017-11-14 14:44:04 -08:00
f_rndis.c A couple of configfs cleanups: 2017-11-14 14:44:04 -08:00
f_serial.c A couple of configfs cleanups: 2017-11-14 14:44:04 -08:00
f_sourcesink.c A couple of configfs cleanups: 2017-11-14 14:44:04 -08:00
f_subset.c A couple of configfs cleanups: 2017-11-14 14:44:04 -08:00
f_tcm.c A couple of configfs cleanups: 2017-11-14 14:44:04 -08:00
f_uac1_legacy.c A couple of configfs cleanups: 2017-11-14 14:44:04 -08:00
f_uac1.c A couple of configfs cleanups: 2017-11-14 14:44:04 -08:00
f_uac2.c A couple of configfs cleanups: 2017-11-14 14:44:04 -08:00
f_uvc.c USB: gadget: function: Remove redundant license text 2017-11-07 15:45:02 +01:00
f_uvc.h USB: gadget: function: Remove redundant license text 2017-11-07 15:45:02 +01:00
g_zero.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ndis.h
rndis.c USB: gadget: function: Remove redundant license text 2017-11-07 15:45:02 +01:00
rndis.h USB: gadget: function: Remove redundant license text 2017-11-07 15:45:02 +01:00
storage_common.c USB: gadget: function: Remove redundant license text 2017-11-07 15:45:02 +01:00
storage_common.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
tcm.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
u_audio.c USB: gadget: function: Remove redundant license text 2017-11-07 15:45:02 +01:00
u_audio.h USB: gadget: function: Remove redundant license text 2017-11-07 15:45:02 +01:00
u_ecm.h USB: gadget: function: Remove redundant license text 2017-11-07 15:45:02 +01:00
u_eem.h USB: gadget: function: Remove redundant license text 2017-11-07 15:45:02 +01:00
u_ether_configfs.h USB: gadget: function: Remove redundant license text 2017-11-07 15:45:02 +01:00
u_ether.c USB: gadget: function: Remove redundant license text 2017-11-07 15:45:02 +01:00
u_ether.h USB: gadget: function: Remove redundant license text 2017-11-07 15:45:02 +01:00
u_fs.h USB: gadget: function: Remove redundant license text 2017-11-07 15:45:02 +01:00
u_gether.h USB: gadget: function: Remove redundant license text 2017-11-07 15:45:02 +01:00
u_hid.h USB: gadget: function: Remove redundant license text 2017-11-07 15:45:02 +01:00
u_midi.h USB: gadget: function: Remove redundant license text 2017-11-07 15:45:02 +01:00
u_ncm.h USB: gadget: function: Remove redundant license text 2017-11-07 15:45:02 +01:00
u_phonet.h USB: gadget: function: Remove redundant license text 2017-11-07 15:45:02 +01:00
u_printer.h USB: gadget: function: Remove redundant license text 2017-11-07 15:45:02 +01:00
u_rndis.h USB: gadget: function: Remove redundant license text 2017-11-07 15:45:02 +01:00
u_serial.c usb: gadget: u_serial: Use kfifo instead of homemade circular buffer 2017-12-11 12:36:50 +02:00
u_serial.h USB: gadget: function: Remove redundant license text 2017-11-07 15:45:02 +01:00
u_tcm.h USB: gadget: function: Remove redundant license text 2017-11-07 15:45:02 +01:00
u_uac1_legacy.c USB: gadget: function: Remove redundant license text 2017-11-07 15:45:02 +01:00
u_uac1_legacy.h USB: gadget: function: Remove redundant license text 2017-11-07 15:45:02 +01:00
u_uac1.h USB: gadget: function: Remove redundant license text 2017-11-07 15:45:02 +01:00
u_uac2.h USB: gadget: function: Remove redundant license text 2017-11-07 15:45:02 +01:00
u_uvc.h USB: gadget: function: Remove redundant license text 2017-11-07 15:45:02 +01:00
uvc_configfs.c A couple of configfs cleanups: 2017-11-14 14:44:04 -08:00
uvc_configfs.h USB: gadget: function: Remove redundant license text 2017-11-07 15:45:02 +01:00
uvc_queue.c USB: gadget: function: Remove redundant license text 2017-11-07 15:45:02 +01:00
uvc_queue.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
uvc_v4l2.c USB: gadget: function: Remove redundant license text 2017-11-07 15:45:02 +01:00
uvc_v4l2.h USB: gadget: function: Remove redundant license text 2017-11-07 15:45:02 +01:00
uvc_video.c USB: gadget: function: Remove redundant license text 2017-11-07 15:45:02 +01:00
uvc_video.h USB: gadget: function: Remove redundant license text 2017-11-07 15:45:02 +01:00
uvc.h USB: gadget: function: Remove redundant license text 2017-11-07 15:45:02 +01:00