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Johan Hovold 77a1c15145 serial: core: return early on unsupported ioctls 
[ Upstream commit 79c5966cec7b148199386ef9933c31b999379065 ]

Drivers can return -ENOIOCTLCMD when an ioctl is not recognised to tell
the upper layers to continue looking for a handler.

This is not the case for the RS485 and ISO7816 ioctls whose handlers
should return -ENOTTY directly in case a serial driver does not
implement the corresponding methods.

Fixes: a5f276f10ff7 ("serial_core: Handle TIOC[GS]RS485 ioctls.")
Fixes: ad8c0eaa0a41 ("tty/serial_core: add ISO7816 infrastructure")
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20210407095208.31838-9-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-05-14 09:44:22 +02:00
..
hvc
tty: hvcs: Don't NULL tty->driver_data until hvcs_cleanup()
2020-10-29 09:57:38 +01:00
ipwireless
tty: ipwireless: fix error handling
2020-10-29 09:58:08 +01:00
serdev
…
serial
serial: core: return early on unsupported ioctls
2021-05-14 09:44:22 +02:00
vt
tty: fix memory leak in vc_deallocate
2021-05-11 14:04:17 +02:00
amiserial.c
tty: amiserial: fix TIOCSSERIAL permission check
2021-05-14 09:44:10 +02:00
cyclades.c
…
ehv_bytechan.c
…
goldfish.c
…
isicom.c
…
Kconfig
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Makefile
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mips_ejtag_fdc.c
…
moxa.c
tty: moxa: fix TIOCSSERIAL permission check
2021-05-14 09:44:11 +02:00
moxa.h
…
mxser.c
…
mxser.h
…
n_gsm.c
tty: n_gsm: check error while registering tty devices
2021-05-11 14:04:07 +02:00
n_hdlc.c
…
n_null.c
…
n_r3964.c
…
n_tracerouter.c
…
n_tracesink.c
…
n_tracesink.h
…
n_tty.c
…
nozomi.c
…
pty.c
pty: do tty_flip_buffer_push without port->lock in pty_write
2020-10-29 09:57:38 +01:00
rocket_int.h
…
rocket.c
tty: rocket, avoid OOB access
2020-04-29 16:33:17 +02:00
rocket.h
…
synclink_gt.c
…
synclink.c
…
synclinkmp.c
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sysrq.c
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tty_audit.c
…
tty_baudrate.c
…
tty_buffer.c
…
tty_io.c
tty: fix return value for unsupported ioctls
2021-05-14 09:44:22 +02:00
tty_ioctl.c
…
tty_jobctrl.c
tty: Fix ->session locking
2020-12-11 13:23:28 +01:00
tty_ldisc.c
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tty_ldsem.c
…
tty_mutex.c
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tty_port.c
…
ttynull.c
…
vcc.c
sparc64: vcc: Fix error return code in vcc_probe()
2020-10-01 13:17:57 +02:00