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![]() The tty lock is held when the tty driver's hangup() method is called (from the lone call-site, __tty_hangup()). The call-tree audit [1] of tty_port_hangup() is a closed graph of the callers of tty_port_hangup(); ie., all callers originate only from __tty_hangup(). Of these callers, none drop the tty lock prior to calling tty_port_hangup(). [1] Call-tree audit of tty_port_hangup() __tty_hangup() tty->ops->hangup() --+ | rs_hangup():arch/ia64/hp/sim/simserial.c line_hangup():arch/um/drivers/line.c gdm_tty_hangup():drivers/staging/gdm724x/gdm_tty.c fwtty_hangup():drivers/staging/fwserial/fwserial.c acm_tty_hangup():drivers/usb/class/cdc-acm.c serial_hangup():drivers/usb/serial/usb-serial.c ipoctal_hangup():drivers/ipack/devices/ipoctal.c cy_hangup():drivers/tty/cyclades.c isicom_hangup():drivers/tty/isicom.c rp_hangup():drivers/tty/rocket.c dashtty_hangup():drivers/tty/metag_da.c moxa_hangup():drivers/tty/moxa.c gsmtty_hangup():drivers/tty/n_gsm.c goldfish_tty_hangup():drivers/tty/goldfish.c ehv_bc_tty_hangup():drivers/tty/ehv_bytechan.c mxser_hangup():drivers/tty/mxser.c kgdb_nmi_tty_hangup():drivers/tty/serial/kgdb_nmi.c ifx_spi_hangup():drivers/tty/serial/ifx6x60.c ntty_hangup():drivers/tty/nozomi.c capinc_tty_hangup():drivers/isdn/capi/capi.c mgslpc_hangup():drivers/char/pcmcia/synclink_cs.c sdio_uart_hangup():drivers/mmc/card/sdio_uart.c rfcomm_tty_hangup():net/bluetooth/rfcomm/tty.c | +- tty_port_hangup() Signed-off-by: Peter Hurley <peter@hurleysoftware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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.. | ||
hvc | ||
ipwireless | ||
serial | ||
vt | ||
amiserial.c | ||
bfin_jtag_comm.c | ||
cyclades.c | ||
ehv_bytechan.c | ||
goldfish.c | ||
isicom.c | ||
Kconfig | ||
Makefile | ||
metag_da.c | ||
moxa.c | ||
moxa.h | ||
mxser.c | ||
mxser.h | ||
n_gsm.c | ||
n_hdlc.c | ||
n_r3964.c | ||
n_tracerouter.c | ||
n_tracesink.c | ||
n_tracesink.h | ||
n_tty.c | ||
nozomi.c | ||
pty.c | ||
rocket.c | ||
rocket.h | ||
rocket_int.h | ||
synclink.c | ||
synclink_gt.c | ||
synclinkmp.c | ||
sysrq.c | ||
tty_audit.c | ||
tty_buffer.c | ||
tty_io.c | ||
tty_ioctl.c | ||
tty_ldisc.c | ||
tty_ldsem.c | ||
tty_mutex.c | ||
tty_port.c |