FAILED: patch "[PATCH] xhci: dbgtty: fix device unregister: fixup" failed to apply to 6.1-stable tree
The patch below does not apply to the 6.1-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.
To reproduce the conflict and resubmit, you may use the following commands:
git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.1.y git checkout FETCH_HEAD git cherry-pick -x 74098cc06e753d3ffd8398b040a3a1dfb65260c0 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to 'stable@vger.kernel.org' --in-reply-to '2025122918-sagging-divisible-a4a4@gregkh' --subject-prefix 'PATCH 6.1.y' HEAD^..
Possible dependencies:
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From 74098cc06e753d3ffd8398b040a3a1dfb65260c0 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=C5=81ukasz=20Bartosik?= ukaszb@chromium.org Date: Thu, 27 Nov 2025 11:16:44 +0000 Subject: [PATCH] xhci: dbgtty: fix device unregister: fixup MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit
This fixup replaces tty_vhangup() call with call to tty_port_tty_vhangup(). Both calls hangup tty device synchronously however tty_port_tty_vhangup() increases reference count during the hangup operation using scoped_guard(tty_port_tty).
Cc: stable stable@kernel.org Fixes: 1f73b8b56cf3 ("xhci: dbgtty: fix device unregister") Signed-off-by: Łukasz Bartosik ukaszb@chromium.org Link: https://patch.msgid.link/20251127111644.3161386-1-ukaszb@google.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
diff --git a/drivers/usb/host/xhci-dbgtty.c b/drivers/usb/host/xhci-dbgtty.c index 57cdda4e09c8..90282e51e23e 100644 --- a/drivers/usb/host/xhci-dbgtty.c +++ b/drivers/usb/host/xhci-dbgtty.c @@ -554,7 +554,7 @@ static void xhci_dbc_tty_unregister_device(struct xhci_dbc *dbc) * Hang up the TTY. This wakes up any blocked * writers and causes subsequent writes to fail. */ - tty_vhangup(port->port.tty); + tty_port_tty_vhangup(&port->port);
tty_unregister_device(dbc_tty_driver, port->minor); xhci_dbc_tty_exit_port(port);
From: Uwe Kleine-König u.kleine-koenig@pengutronix.de
[ Upstream commit d5b3d02d0b107345f2a6ecb5b06f98356f5c97ab ]
The return value is only ever used as a return value for remove callbacks of platform drivers. This return value is ignored by the driver core. (The only effect is an error message, but uart_remove_one_port() already emitted one in this case.)
So the return value isn't used at all and uart_remove_one_port() can be changed to return void without any loss. Also this better matches the Linux device model as remove functions are not supposed to fail.
Signed-off-by: Uwe Kleine-König u.kleine-koenig@pengutronix.de Link: https://lore.kernel.org/r/20230512173810.131447-3-u.kleine-koenig@pengutroni... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Stable-dep-of: 74098cc06e75 ("xhci: dbgtty: fix device unregister: fixup") Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/tty/serial/atmel_serial.c | 5 ++--- drivers/tty/serial/clps711x.c | 4 +++- drivers/tty/serial/cpm_uart/cpm_uart_core.c | 5 ++++- drivers/tty/serial/imx.c | 4 +++- drivers/tty/serial/lantiq.c | 4 +++- drivers/tty/serial/serial_core.c | 6 +----- drivers/tty/serial/st-asc.c | 4 +++- drivers/tty/serial/uartlite.c | 12 ++++-------- drivers/tty/serial/xilinx_uartps.c | 5 ++--- include/linux/serial_core.h | 2 +- 10 files changed, 26 insertions(+), 25 deletions(-)
diff --git a/drivers/tty/serial/atmel_serial.c b/drivers/tty/serial/atmel_serial.c index b3463cdd1d4b..e11f89355d17 100644 --- a/drivers/tty/serial/atmel_serial.c +++ b/drivers/tty/serial/atmel_serial.c @@ -3022,14 +3022,13 @@ static int atmel_serial_remove(struct platform_device *pdev) { struct uart_port *port = platform_get_drvdata(pdev); struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); - int ret = 0;
tasklet_kill(&atmel_port->tasklet_rx); tasklet_kill(&atmel_port->tasklet_tx);
device_init_wakeup(&pdev->dev, 0);
- ret = uart_remove_one_port(&atmel_uart, port); + uart_remove_one_port(&atmel_uart, port);
kfree(atmel_port->rx_ring.buf);
@@ -3039,7 +3038,7 @@ static int atmel_serial_remove(struct platform_device *pdev)
pdev->dev.of_node = NULL;
- return ret; + return 0; }
static SIMPLE_DEV_PM_OPS(atmel_serial_pm_ops, atmel_serial_suspend, diff --git a/drivers/tty/serial/clps711x.c b/drivers/tty/serial/clps711x.c index 404b43a5ae33..6d5fab8840a3 100644 --- a/drivers/tty/serial/clps711x.c +++ b/drivers/tty/serial/clps711x.c @@ -515,7 +515,9 @@ static int uart_clps711x_remove(struct platform_device *pdev) { struct clps711x_port *s = platform_get_drvdata(pdev);
- return uart_remove_one_port(&clps711x_uart, &s->port); + uart_remove_one_port(&clps711x_uart, &s->port); + + return 0; }
static const struct of_device_id __maybe_unused clps711x_uart_dt_ids[] = { diff --git a/drivers/tty/serial/cpm_uart/cpm_uart_core.c b/drivers/tty/serial/cpm_uart/cpm_uart_core.c index bb25691f5000..863c26a263ed 100644 --- a/drivers/tty/serial/cpm_uart/cpm_uart_core.c +++ b/drivers/tty/serial/cpm_uart/cpm_uart_core.c @@ -1428,7 +1428,10 @@ static int cpm_uart_probe(struct platform_device *ofdev) static int cpm_uart_remove(struct platform_device *ofdev) { struct uart_cpm_port *pinfo = platform_get_drvdata(ofdev); - return uart_remove_one_port(&cpm_reg, &pinfo->port); + + uart_remove_one_port(&cpm_reg, &pinfo->port); + + return 0; }
static const struct of_device_id cpm_uart_match[] = { diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c index e1d88a499554..47e59664dbde 100644 --- a/drivers/tty/serial/imx.c +++ b/drivers/tty/serial/imx.c @@ -2538,7 +2538,9 @@ static int imx_uart_remove(struct platform_device *pdev) { struct imx_port *sport = platform_get_drvdata(pdev);
- return uart_remove_one_port(&imx_uart_uart_driver, &sport->port); + uart_remove_one_port(&imx_uart_uart_driver, &sport->port); + + return 0; }
static void imx_uart_restore_context(struct imx_port *sport) diff --git a/drivers/tty/serial/lantiq.c b/drivers/tty/serial/lantiq.c index 112a2f5f6ac3..5a3e826d2909 100644 --- a/drivers/tty/serial/lantiq.c +++ b/drivers/tty/serial/lantiq.c @@ -918,7 +918,9 @@ static int lqasc_remove(struct platform_device *pdev) { struct uart_port *port = platform_get_drvdata(pdev);
- return uart_remove_one_port(&lqasc_reg, port); + uart_remove_one_port(&lqasc_reg, port); + + return 0; }
static const struct ltq_soc_data soc_data_lantiq = { diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c index 19a53801ff9e..534720a646f4 100644 --- a/drivers/tty/serial/serial_core.c +++ b/drivers/tty/serial/serial_core.c @@ -3186,13 +3186,12 @@ EXPORT_SYMBOL(uart_add_one_port); * This unhooks (and hangs up) the specified port structure from the core * driver. No further calls will be made to the low-level code for this port. */ -int uart_remove_one_port(struct uart_driver *drv, struct uart_port *uport) +void uart_remove_one_port(struct uart_driver *drv, struct uart_port *uport) { struct uart_state *state = drv->state + uport->line; struct tty_port *port = &state->port; struct uart_port *uart_port; struct tty_struct *tty; - int ret = 0;
mutex_lock(&port_mutex);
@@ -3208,7 +3207,6 @@ int uart_remove_one_port(struct uart_driver *drv, struct uart_port *uport)
if (!uart_port) { mutex_unlock(&port->mutex); - ret = -EINVAL; goto out; } uport->flags |= UPF_DEAD; @@ -3251,8 +3249,6 @@ int uart_remove_one_port(struct uart_driver *drv, struct uart_port *uport) mutex_unlock(&port->mutex); out: mutex_unlock(&port_mutex); - - return ret; } EXPORT_SYMBOL(uart_remove_one_port);
diff --git a/drivers/tty/serial/st-asc.c b/drivers/tty/serial/st-asc.c index fcecea689a0d..806f12c2744b 100644 --- a/drivers/tty/serial/st-asc.c +++ b/drivers/tty/serial/st-asc.c @@ -834,7 +834,9 @@ static int asc_serial_remove(struct platform_device *pdev) { struct uart_port *port = platform_get_drvdata(pdev);
- return uart_remove_one_port(&asc_uart_driver, port); + uart_remove_one_port(&asc_uart_driver, port); + + return 0; }
#ifdef CONFIG_PM_SLEEP diff --git a/drivers/tty/serial/uartlite.c b/drivers/tty/serial/uartlite.c index a75677d5cbef..40db763eac9d 100644 --- a/drivers/tty/serial/uartlite.c +++ b/drivers/tty/serial/uartlite.c @@ -686,18 +686,15 @@ static int ulite_assign(struct device *dev, int id, phys_addr_t base, int irq, * * @dev: pointer to device structure */ -static int ulite_release(struct device *dev) +static void ulite_release(struct device *dev) { struct uart_port *port = dev_get_drvdata(dev); - int rc = 0;
if (port) { - rc = uart_remove_one_port(&ulite_uart_driver, port); + uart_remove_one_port(&ulite_uart_driver, port); dev_set_drvdata(dev, NULL); port->mapbase = 0; } - - return rc; }
/** @@ -891,14 +888,13 @@ static int ulite_remove(struct platform_device *pdev) { struct uart_port *port = dev_get_drvdata(&pdev->dev); struct uartlite_data *pdata = port->private_data; - int rc;
clk_disable_unprepare(pdata->clk); - rc = ulite_release(&pdev->dev); + ulite_release(&pdev->dev); pm_runtime_disable(&pdev->dev); pm_runtime_set_suspended(&pdev->dev); pm_runtime_dont_use_autosuspend(&pdev->dev); - return rc; + return 0; }
/* work with hotplug and coldplug */ diff --git a/drivers/tty/serial/xilinx_uartps.c b/drivers/tty/serial/xilinx_uartps.c index 29afcc6d9bb7..2f51f46e3bd8 100644 --- a/drivers/tty/serial/xilinx_uartps.c +++ b/drivers/tty/serial/xilinx_uartps.c @@ -1670,14 +1670,13 @@ static int cdns_uart_remove(struct platform_device *pdev) { struct uart_port *port = platform_get_drvdata(pdev); struct cdns_uart *cdns_uart_data = port->private_data; - int rc;
/* Remove the cdns_uart port from the serial core */ #ifdef CONFIG_COMMON_CLK clk_notifier_unregister(cdns_uart_data->uartclk, &cdns_uart_data->clk_rate_change_nb); #endif - rc = uart_remove_one_port(cdns_uart_data->cdns_uart_driver, port); + uart_remove_one_port(cdns_uart_data->cdns_uart_driver, port); port->mapbase = 0; clk_disable_unprepare(cdns_uart_data->uartclk); clk_disable_unprepare(cdns_uart_data->pclk); @@ -1693,7 +1692,7 @@ static int cdns_uart_remove(struct platform_device *pdev)
if (!--instances) uart_unregister_driver(cdns_uart_data->cdns_uart_driver); - return rc; + return 0; }
static struct platform_driver cdns_uart_platform_driver = { diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h index 5a83db0ac763..762cbf400ec6 100644 --- a/include/linux/serial_core.h +++ b/include/linux/serial_core.h @@ -847,7 +847,7 @@ void uart_console_write(struct uart_port *port, const char *s, int uart_register_driver(struct uart_driver *uart); void uart_unregister_driver(struct uart_driver *uart); int uart_add_one_port(struct uart_driver *reg, struct uart_port *port); -int uart_remove_one_port(struct uart_driver *reg, struct uart_port *port); +void uart_remove_one_port(struct uart_driver *reg, struct uart_port *port); bool uart_match_port(const struct uart_port *port1, const struct uart_port *port2);
From: "Jiri Slaby (SUSE)" jirislaby@kernel.org
[ Upstream commit 2b5eac0f8c6e79bc152c8804f9f88d16717013ab ]
This code (tty_get -> vhangup -> tty_put) is repeated on few places. Introduce a helper similar to tty_port_tty_hangup() (asynchronous) to handle even vhangup (synchronous).
And use it on those places.
In fact, reuse the tty_port_tty_hangup()'s code and call tty_vhangup() depending on a new bool parameter.
Signed-off-by: "Jiri Slaby (SUSE)" jirislaby@kernel.org Cc: Karsten Keil isdn@linux-pingi.de Cc: David Lin dtwlin@gmail.com Cc: Johan Hovold johan@kernel.org Cc: Alex Elder elder@kernel.org Cc: Oliver Neukum oneukum@suse.com Cc: Marcel Holtmann marcel@holtmann.org Cc: Johan Hedberg johan.hedberg@gmail.com Cc: Luiz Augusto von Dentz luiz.dentz@gmail.com Reviewed-by: Ilpo Järvinen ilpo.jarvinen@linux.intel.com Link: https://lore.kernel.org/r/20250611100319.186924-2-jirislaby@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Stable-dep-of: 74098cc06e75 ("xhci: dbgtty: fix device unregister: fixup") Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/isdn/capi/capi.c | 8 +------- drivers/staging/greybus/uart.c | 7 +------ drivers/tty/serial/serial_core.c | 7 +------ drivers/tty/tty_port.c | 12 ++++++++---- drivers/usb/class/cdc-acm.c | 7 +------ drivers/usb/serial/usb-serial.c | 7 +------ include/linux/tty_port.h | 12 +++++++++++- net/bluetooth/rfcomm/tty.c | 7 +------ 8 files changed, 25 insertions(+), 42 deletions(-)
diff --git a/drivers/isdn/capi/capi.c b/drivers/isdn/capi/capi.c index 0f00be62438d..973092543eb7 100644 --- a/drivers/isdn/capi/capi.c +++ b/drivers/isdn/capi/capi.c @@ -304,15 +304,9 @@ static void capincci_alloc_minor(struct capidev *cdev, struct capincci *np) static void capincci_free_minor(struct capincci *np) { struct capiminor *mp = np->minorp; - struct tty_struct *tty;
if (mp) { - tty = tty_port_tty_get(&mp->port); - if (tty) { - tty_vhangup(tty); - tty_kref_put(tty); - } - + tty_port_tty_vhangup(&mp->port); capiminor_free(mp); } } diff --git a/drivers/staging/greybus/uart.c b/drivers/staging/greybus/uart.c index 90ff07f2cbf7..70505bcfb981 100644 --- a/drivers/staging/greybus/uart.c +++ b/drivers/staging/greybus/uart.c @@ -915,7 +915,6 @@ static void gb_uart_remove(struct gbphy_device *gbphy_dev) { struct gb_tty *gb_tty = gb_gbphy_get_data(gbphy_dev); struct gb_connection *connection = gb_tty->connection; - struct tty_struct *tty; int ret;
ret = gbphy_runtime_get_sync(gbphy_dev); @@ -928,11 +927,7 @@ static void gb_uart_remove(struct gbphy_device *gbphy_dev) wake_up_all(&gb_tty->wioctl); mutex_unlock(&gb_tty->mutex);
- tty = tty_port_tty_get(&gb_tty->port); - if (tty) { - tty_vhangup(tty); - tty_kref_put(tty); - } + tty_port_tty_vhangup(&gb_tty->port);
gb_connection_disable_rx(connection); tty_unregister_device(gb_tty_driver, gb_tty->minor); diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c index 534720a646f4..c215a240db7a 100644 --- a/drivers/tty/serial/serial_core.c +++ b/drivers/tty/serial/serial_core.c @@ -3191,7 +3191,6 @@ void uart_remove_one_port(struct uart_driver *drv, struct uart_port *uport) struct uart_state *state = drv->state + uport->line; struct tty_port *port = &state->port; struct uart_port *uart_port; - struct tty_struct *tty;
mutex_lock(&port_mutex);
@@ -3217,11 +3216,7 @@ void uart_remove_one_port(struct uart_driver *drv, struct uart_port *uport) */ tty_port_unregister_device(port, drv->tty_driver, uport->line);
- tty = tty_port_tty_get(port); - if (tty) { - tty_vhangup(port->tty); - tty_kref_put(tty); - } + tty_port_tty_vhangup(port);
/* * If the port is used as a console, unregister it diff --git a/drivers/tty/tty_port.c b/drivers/tty/tty_port.c index dce08a6d7b5e..7e3eb4dffd32 100644 --- a/drivers/tty/tty_port.c +++ b/drivers/tty/tty_port.c @@ -416,15 +416,19 @@ EXPORT_SYMBOL(tty_port_hangup); * @port: tty port * @check_clocal: hang only ttys with %CLOCAL unset? */ -void tty_port_tty_hangup(struct tty_port *port, bool check_clocal) +void __tty_port_tty_hangup(struct tty_port *port, bool check_clocal, bool async) { struct tty_struct *tty = tty_port_tty_get(port);
- if (tty && (!check_clocal || !C_CLOCAL(tty))) - tty_hangup(tty); + if (tty && (!check_clocal || !C_CLOCAL(tty))) { + if (async) + tty_hangup(tty); + else + tty_vhangup(tty); + } tty_kref_put(tty); } -EXPORT_SYMBOL_GPL(tty_port_tty_hangup); +EXPORT_SYMBOL_GPL(__tty_port_tty_hangup);
/** * tty_port_tty_wakeup - helper to wake up a tty diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c index ca275933b67a..f8fb175f6c93 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -1548,7 +1548,6 @@ static int acm_probe(struct usb_interface *intf, static void acm_disconnect(struct usb_interface *intf) { struct acm *acm = usb_get_intfdata(intf); - struct tty_struct *tty; int i;
/* sibling interface is already cleaning up */ @@ -1575,11 +1574,7 @@ static void acm_disconnect(struct usb_interface *intf) usb_set_intfdata(acm->data, NULL); mutex_unlock(&acm->mutex);
- tty = tty_port_tty_get(&acm->port); - if (tty) { - tty_vhangup(tty); - tty_kref_put(tty); - } + tty_port_tty_vhangup(&acm->port);
cancel_delayed_work_sync(&acm->dwork);
diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c index 164521ee10c6..f2e6bb3d0ca4 100644 --- a/drivers/usb/serial/usb-serial.c +++ b/drivers/usb/serial/usb-serial.c @@ -1179,7 +1179,6 @@ static void usb_serial_disconnect(struct usb_interface *interface) struct usb_serial *serial = usb_get_intfdata(interface); struct device *dev = &interface->dev; struct usb_serial_port *port; - struct tty_struct *tty;
/* sibling interface is cleaning up */ if (!serial) @@ -1194,11 +1193,7 @@ static void usb_serial_disconnect(struct usb_interface *interface)
for (i = 0; i < serial->num_ports; ++i) { port = serial->port[i]; - tty = tty_port_tty_get(&port->port); - if (tty) { - tty_vhangup(tty); - tty_kref_put(tty); - } + tty_port_tty_vhangup(&port->port); usb_serial_port_poison_urbs(port); wake_up_interruptible(&port->port.delta_msr_wait); cancel_work_sync(&port->work); diff --git a/include/linux/tty_port.h b/include/linux/tty_port.h index fa3c3bdaa234..4ecd6fa9aacb 100644 --- a/include/linux/tty_port.h +++ b/include/linux/tty_port.h @@ -234,7 +234,7 @@ int tty_port_carrier_raised(struct tty_port *port); void tty_port_raise_dtr_rts(struct tty_port *port); void tty_port_lower_dtr_rts(struct tty_port *port); void tty_port_hangup(struct tty_port *port); -void tty_port_tty_hangup(struct tty_port *port, bool check_clocal); +void __tty_port_tty_hangup(struct tty_port *port, bool check_clocal, bool async); void tty_port_tty_wakeup(struct tty_port *port); int tty_port_block_til_ready(struct tty_port *port, struct tty_struct *tty, struct file *filp); @@ -253,4 +253,14 @@ static inline int tty_port_users(struct tty_port *port) return port->count + port->blocked_open; }
+static inline void tty_port_tty_hangup(struct tty_port *port, bool check_clocal) +{ + __tty_port_tty_hangup(port, check_clocal, true); +} + +static inline void tty_port_tty_vhangup(struct tty_port *port) +{ + __tty_port_tty_hangup(port, false, false); +} + #endif diff --git a/net/bluetooth/rfcomm/tty.c b/net/bluetooth/rfcomm/tty.c index 8009e0e93216..9bf23be5e7df 100644 --- a/net/bluetooth/rfcomm/tty.c +++ b/net/bluetooth/rfcomm/tty.c @@ -438,7 +438,6 @@ static int __rfcomm_release_dev(void __user *arg) { struct rfcomm_dev_req req; struct rfcomm_dev *dev; - struct tty_struct *tty;
if (copy_from_user(&req, arg, sizeof(req))) return -EFAULT; @@ -464,11 +463,7 @@ static int __rfcomm_release_dev(void __user *arg) rfcomm_dlc_close(dev->dlc, 0);
/* Shut down TTY synchronously before freeing rfcomm_dev */ - tty = tty_port_tty_get(&dev->port); - if (tty) { - tty_vhangup(tty); - tty_kref_put(tty); - } + tty_port_tty_vhangup(&dev->port);
if (!test_bit(RFCOMM_TTY_OWNED, &dev->status)) tty_port_put(&dev->port);
From: Łukasz Bartosik ukaszb@chromium.org
[ Upstream commit 74098cc06e753d3ffd8398b040a3a1dfb65260c0 ]
This fixup replaces tty_vhangup() call with call to tty_port_tty_vhangup(). Both calls hangup tty device synchronously however tty_port_tty_vhangup() increases reference count during the hangup operation using scoped_guard(tty_port_tty).
Cc: stable stable@kernel.org Fixes: 1f73b8b56cf3 ("xhci: dbgtty: fix device unregister") Signed-off-by: Łukasz Bartosik ukaszb@chromium.org Link: https://patch.msgid.link/20251127111644.3161386-1-ukaszb@google.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/usb/host/xhci-dbgtty.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/usb/host/xhci-dbgtty.c b/drivers/usb/host/xhci-dbgtty.c index d6652db4f7c1..3e388f385372 100644 --- a/drivers/usb/host/xhci-dbgtty.c +++ b/drivers/usb/host/xhci-dbgtty.c @@ -523,7 +523,7 @@ static void xhci_dbc_tty_unregister_device(struct xhci_dbc *dbc) * Hang up the TTY. This wakes up any blocked * writers and causes subsequent writes to fail. */ - tty_vhangup(port->port.tty); + tty_port_tty_vhangup(&port->port);
tty_unregister_device(dbc_tty_driver, port->minor); xhci_dbc_tty_exit_port(port);
linux-stable-mirror@lists.linaro.org
-
gregkh＠linuxfoundation.org -
Sasha Levin