Revert "usb: gadget: u_serial: Disable ep before setting port to null to fix the...

commit 086fd062bc3883ae1ce4166cff5355db315ad879 upstream.

This reverts commit 13014969cbf07f18d62ceea40bd8ca8ec9d36cec.

It is reported to cause crashes on Tegra systems, so revert it for now.

Link: https://lore.kernel.org/r/1037c1ad-9230-4181-b9c3-167dbaa47644@nvidia.com
Reported-by: Jon Hunter <jonathanh@nvidia.com>
Cc: stable <stable@kernel.org>
Cc: Lianqin Hu <hulianqin@vivo.com>
Link: https://lore.kernel.org/r/2025011711-yippee-fever-a737@gregkh
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/gadget/function/u_serial.c b/drivers/usb/gadget/function/u_serial.c
index 9afc6cc1af6c5545b0db08fca6991ff1da0e3db3..a2ba5ab9617c1656a3944b5293ce1203697b4362 100644 (file)
--- a/drivers/usb/gadget/function/u_serial.c
+++ b/drivers/usb/gadget/function/u_serial.c
@@ -1395,10 +1395,6 @@ void gserial_disconnect(struct gserial *gser)
        /* REVISIT as above: how best to track this? */
        port->port_line_coding = gser->port_line_coding;
 
-       /* disable endpoints, aborting down any active I/O */
-       usb_ep_disable(gser->out);
-       usb_ep_disable(gser->in);
-
        port->port_usb = NULL;
        gser->ioport = NULL;
        if (port->port.count > 0) {
@@ -1410,6 +1406,10 @@ void gserial_disconnect(struct gserial *gser)
        spin_unlock(&port->port_lock);
        spin_unlock_irqrestore(&serial_port_lock, flags);
 
+       /* disable endpoints, aborting down any active I/O */
+       usb_ep_disable(gser->out);
+       usb_ep_disable(gser->in);
+
        /* finally, free any unused/unusable I/O buffers */
        spin_lock_irqsave(&port->port_lock, flags);
        if (port->port.count == 0)