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Commit 957e96e9 authored by Marek Vasut's avatar Marek Vasut Committed by Mattijs Korpershoek
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usb: gadget: f_mass_storage: Stop ums on START-STOP UNIT SCSI command


Exit the UMS handler loop in case START-STOP UNIT SCSI command is
received. This is sent e.g. by the util-linux eject(1) command and
indicates to the device that it is supposed to spin down the media
and enter low power state.

This effectively adds support for exitting the 'ums' command from
host using 'eject /dev/sdN' that is on par with 'dfu-util -e' .

Signed-off-by: default avatarMarek Vasut <marex@denx.de>
Reviewed-by: default avatarMattijs Korpershoek <mkorpershoek@baylibre.com>
Link: https://lore.kernel.org/r/20231107001018.55640-1-marex@denx.de


Signed-off-by: default avatarMattijs Korpershoek <mkorpershoek@baylibre.com>
parent bc2338ba
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......@@ -327,6 +327,7 @@ struct fsg_common {
unsigned int short_packet_received:1;
unsigned int bad_lun_okay:1;
unsigned int running:1;
unsigned int eject:1;
int thread_wakeup_needed;
struct completion thread_notifier;
......@@ -669,6 +670,10 @@ static int sleep_thread(struct fsg_common *common)
}
if (k == 10) {
/* Handle START-STOP UNIT */
if (common->eject)
return -EPIPE;
/* Handle CTRL+C */
if (ctrlc())
return -EPIPE;
......@@ -1325,6 +1330,8 @@ static int do_start_stop(struct fsg_common *common)
return -EINVAL;
}
common->eject = 1;
return 0;
}
......
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