From: Marek Vasut Date: Tue, 7 Nov 2023 00:09:59 +0000 (+0100) Subject: usb: gadget: f_mass_storage: Stop ums on START-STOP UNIT SCSI command X-Git-Url: http://git.dujemihanovic.xyz/img/sics.gif?a=commitdiff_plain;h=1041ee64eb18f7a3af30085765ced149cb4dc7cf;p=u-boot.git 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: Marek Vasut Reviewed-by: Mattijs Korpershoek Link: https://lore.kernel.org/r/20231107001018.55640-1-marex@denx.de Signed-off-by: Mattijs Korpershoek --- diff --git a/drivers/usb/gadget/f_mass_storage.c b/drivers/usb/gadget/f_mass_storage.c index 1d17331cb0..c725aed3f6 100644 --- a/drivers/usb/gadget/f_mass_storage.c +++ b/drivers/usb/gadget/f_mass_storage.c @@ -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; }