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authorLinus Torvalds <torvalds@linux-foundation.org>2016-05-20 20:57:27 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2016-05-20 20:57:27 -0700
commite10abc629f38efd9b6936cf3612583cc846104d9 (patch)
tree58fb8f6dba5d085d4b0352137d18faf7cfa47a69 /drivers/tty/n_gsm.c
parent0eff4589c36edd03d50b835d0768b2c2ef3f20bd (diff)
parentd20bb59af64667a16f2468b54fc0adb2f824a3b6 (diff)
downloadlinux-e10abc629f38efd9b6936cf3612583cc846104d9.tar.bz2
Merge tag 'tty-4.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty and serial driver updates from Greg KH: "Here's the large TTY and Serial driver update for 4.7-rc1. A few new serial drivers are added here, and Peter has fixed a bunch of long-standing bugs in the tty layer and serial drivers as normal. Full details in the shortlog. All of these have been in linux-next for a while with no reported issues" * tag 'tty-4.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (88 commits) MAINTAINERS: 8250: remove website reference serial: core: Fix port mutex assert if lockdep disabled serial: 8250_dw: fix wrong logic in dw8250_check_lcr() tty: vt, finish looping on duplicate tty: vt, return error when con_startup fails QE-UART: add "fsl,t1040-ucc-uart" to of_device_id serial: mctrl_gpio: Drop support for out1-gpios and out2-gpios serial: 8250dw: Add device HID for future AMD UART controller Fix OpenSSH pty regression on close serial: mctrl_gpio: add IRQ locking serial: 8250: Integrate Fintek into 8250_base serial: mps2-uart: add support for early console serial: mps2-uart: add MPS2 UART driver dt-bindings: document the MPS2 UART bindings serial: sirf: Use generic uart-has-rtscts DT property serial: sirf: Introduce helper variable struct device_node *np serial: mxs-auart: Use generic uart-has-rtscts DT property serial: imx: Use generic uart-has-rtscts DT property doc: DT: Add Generic Serial Device Tree Bindings serial: 8250: of: Make tegra_serial_handle_break() static ...
Diffstat (limited to 'drivers/tty/n_gsm.c')
-rw-r--r--drivers/tty/n_gsm.c12
1 files changed, 6 insertions, 6 deletions
diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c
index 0c27a00ab42d..54cab59e20ed 100644
--- a/drivers/tty/n_gsm.c
+++ b/drivers/tty/n_gsm.c
@@ -2045,7 +2045,9 @@ static void gsm_cleanup_mux(struct gsm_mux *gsm)
}
}
spin_unlock(&gsm_mux_lock);
- WARN_ON(i == MAX_MUX);
+ /* open failed before registering => nothing to do */
+ if (i == MAX_MUX)
+ return;
/* In theory disconnecting DLCI 0 is sufficient but for some
modems this is apparently not the case. */
@@ -2947,7 +2949,7 @@ static int gsmtty_open(struct tty_struct *tty, struct file *filp)
dlci->modem_rx = 0;
/* We could in theory open and close before we wait - eg if we get
a DM straight back. This is ok as that will have caused a hangup */
- set_bit(ASYNCB_INITIALIZED, &port->flags);
+ tty_port_set_initialized(port, 1);
/* Start sending off SABM messages */
gsm_dlci_begin_open(dlci);
/* And wait for virtual carrier */
@@ -2970,10 +2972,8 @@ static void gsmtty_close(struct tty_struct *tty, struct file *filp)
if (tty_port_close_start(&dlci->port, tty, filp) == 0)
return;
gsm_dlci_begin_close(dlci);
- if (test_bit(ASYNCB_INITIALIZED, &dlci->port.flags)) {
- if (C_HUPCL(tty))
- tty_port_lower_dtr_rts(&dlci->port);
- }
+ if (tty_port_initialized(&dlci->port) && C_HUPCL(tty))
+ tty_port_lower_dtr_rts(&dlci->port);
tty_port_close_end(&dlci->port, tty);
tty_port_tty_set(&dlci->port, NULL);
return;