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author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-05-20 20:57:27 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-05-20 20:57:27 -0700 |
commit | e10abc629f38efd9b6936cf3612583cc846104d9 (patch) | |
tree | 58fb8f6dba5d085d4b0352137d18faf7cfa47a69 /drivers/tty/n_gsm.c | |
parent | 0eff4589c36edd03d50b835d0768b2c2ef3f20bd (diff) | |
parent | d20bb59af64667a16f2468b54fc0adb2f824a3b6 (diff) | |
download | linux-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.c | 12 |
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; |