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Maxim Devaev 421c8d9a20 usb: gadget: f_mass_storage: forced_eject attribute 
It allows to reset prevent_medium_removal flag and "eject" the image.
This can be useful to free the drive from a hunging host or if the host
continues to use the drive even after unmounting (Linux does this).
It's also a bit like using an unfolded paperclip on an optical drive.

Previously, the undocumented method of sending SIGUSR1 to a special
"file-storage" kernel thread could be used for these purposes,
but when using multiple storages there was no way to distinguish
one from the other, so we had to send a signal to everyone.

Reviewed-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Maxim Devaev <mdevaev@gmail.com>
Link: https://lore.kernel.org/r/20220711102956.19642-1-mdevaev@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-07-14 16:06:42 +02:00
..
acm.rst docs: usb: rename files to .rst and add them to drivers-api 2019-06-20 14:28:36 +02:00
authorization.rst docs: usb: rename files to .rst and add them to drivers-api 2019-06-20 14:28:36 +02:00
chipidea.rst docs: usb: rename files to .rst and add them to drivers-api 2019-06-20 14:28:36 +02:00
CREDITS
dwc3.rst docs: usb: rename files to .rst and add them to drivers-api 2019-06-20 14:28:36 +02:00
ehci.rst docs: usb: replace some characters 2021-06-17 13:22:33 -06:00
functionfs.rst docs: usb: rename files to .rst and add them to drivers-api 2019-06-20 14:28:36 +02:00
gadget_configfs.rst docs: usb: function: Modify path name 2021-05-13 10:14:18 -06:00
gadget_hid.rst USB: Replace HTTP links with HTTPS ones 2020-07-21 13:41:57 +02:00
gadget_multi.rst USB: Replace HTTP links with HTTPS ones 2020-07-21 13:41:57 +02:00
gadget_printer.rst docs: usb: replace some characters 2021-06-17 13:22:33 -06:00
gadget_serial.rst docs: usb: rename files to .rst and add them to drivers-api 2019-06-20 14:28:36 +02:00
gadget-testing.rst usb: gadget: f_mass_storage: forced_eject attribute 2022-07-14 16:06:42 +02:00
index.rst usb: gadget: add raw-gadget interface 2020-03-15 11:34:48 +02:00
iuu_phoenix.rst docs: usb: rename files to .rst and add them to drivers-api 2019-06-20 14:28:36 +02:00
linux-cdc-acm.inf
linux.inf USB: Replace HTTP links with HTTPS ones 2020-07-21 13:41:57 +02:00
mass-storage.rst usb: gadget: f_mass_storage: forced_eject attribute 2022-07-14 16:06:42 +02:00
misc_usbsevseg.rst docs: usb: rename files to .rst and add them to drivers-api 2019-06-20 14:28:36 +02:00
mtouchusb.rst Documentation: drop optional BOMs 2021-05-10 15:17:34 -06:00
ohci.rst docs: usb: rename files to .rst and add them to drivers-api 2019-06-20 14:28:36 +02:00
raw-gadget.rst usb: raw-gadget: update documentation and Kconfig 2021-01-26 18:38:45 +01:00
text_files.rst docs: usb: remove some broken references 2020-01-28 13:41:22 -07:00
usb-help.rst docs: usb: rename files to .rst and add them to drivers-api 2019-06-20 14:28:36 +02:00
usb-serial.rst Documentation: drop optional BOMs 2021-05-10 15:17:34 -06:00
usbdevfs-drop-permissions.c usb: devio: Add ioctl to disallow detaching kernel USB drivers. 2016-03-05 12:05:01 -08:00
usbip_protocol.rst docs: usbip: Fix major fields and descriptions in protocol 2021-04-09 16:04:45 +02:00
usbmon.rst docs: usb: fix literal block marker in usbmon verification example 2022-06-09 09:50:03 -06:00