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linux/drivers/tty
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Claudiu Beznea 92f59f8b45 serial: sh-sci: Do not probe the serial port if its slot in sci_ports[] is in use 
commit 9f7dea875c upstream.

In the sh-sci driver, sci_ports[0] is used by earlycon. If the earlycon is
still active when sci_probe() is called and the new serial port is supposed
to map to sci_ports[0], return -EBUSY to prevent breaking the earlycon.

This situation should occurs in debug scenarios, and users should be
aware of the potential conflict.

Fixes: 0b0cced19a ("serial: sh-sci: Add CONFIG_SERIAL_EARLYCON support")
Cc: stable@vger.kernel.org
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Link: https://lore.kernel.org/r/20250116182249.3828577-4-claudiu.beznea.uj@bp.renesas.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2025-02-17 09:40:24 +01:00
..
hvc hvc/xen: fix event channel handling for secondary consoles 2023-11-28 17:19:57 +00:00
ipwireless tty: make tty_operations::write()'s count size_t 2023-08-11 21:12:46 +02:00
serdev tty: make counts in tty_port_client_operations hooks size_t 2023-08-11 21:12:44 +02:00
serial serial: sh-sci: Do not probe the serial port if its slot in sci_ports[] is in use 2025-02-17 09:40:24 +01:00
vt vt: prevent kernel-infoleak in con_font_get() 2024-10-22 15:46:31 +02:00
amiserial.c tty: make tty_operations::write()'s count size_t 2023-08-11 21:12:46 +02:00
ehv_bytechan.c tty: make tty_operations::write()'s count size_t 2023-08-11 21:12:46 +02:00
goldfish.c tty: make tty_operations::write()'s count size_t 2023-08-11 21:12:46 +02:00
Kconfig Merge commit b320441c04 ("Merge tag 'tty-6.5-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty") into tty-next 2023-08-20 14:29:37 +02:00
Makefile tty: add rpmsg driver 2021-10-21 12:35:35 +02:00
mips_ejtag_fdc.c tty: make tty_operations::write()'s count size_t 2023-08-11 21:12:46 +02:00
moxa.c tty: make tty_operations::write()'s count size_t 2023-08-11 21:12:46 +02:00
mxser.c tty: make tty_operations::write()'s count size_t 2023-08-11 21:12:46 +02:00
n_gsm.c tty: n_gsm: Fix use-after-free in gsm_cleanup_mux 2024-10-22 15:46:34 +02:00
n_hdlc.c tty: ldops: unify to u8 2023-08-11 21:12:47 +02:00
n_null.c tty: ldops: unify to u8 2023-08-11 21:12:47 +02:00
n_tty.c tty: n_tty: Fix buffer offsets when lookahead is used 2024-06-21 14:38:24 +02:00
nozomi.c tty: make tty_operations::write()'s count size_t 2023-08-11 21:12:46 +02:00
pty.c tty: make tty_operations::write()'s count size_t 2023-08-11 21:12:46 +02:00
rpmsg_tty.c tty: make tty_operations::write()'s count size_t 2023-08-11 21:12:46 +02:00
synclink_gt.c tty: make tty_operations::write()'s count size_t 2023-08-11 21:12:46 +02:00
sysrq.c of: remove internal arguments from of_property_for_each_u32() 2025-02-08 09:51:51 +01:00
tty.h tty: audit: unify to u8 2023-08-11 21:12:46 +02:00
tty_audit.c tty: audit: unify to u8 2023-08-11 21:12:46 +02:00
tty_baudrate.c tty: Fix comment style in tty_termios_input_baud_rate() 2022-08-30 14:22:34 +02:00
tty_buffer.c tty: tty_buffer: invert conditions in __tty_buffer_request_room() 2023-08-22 14:58:16 +02:00
tty_io.c tty: ldsic: fix tty_ldisc_autoload sysctl's proc_handler 2024-12-09 10:32:45 +01:00
tty_ioctl.c tty: allow TIOCSLCKTRMIOS with CAP_CHECKPOINT_RESTORE 2024-02-05 20:14:32 +00:00
tty_jobctrl.c tty: tty_jobctrl: fix pid memleak in disassociate_ctty() 2023-11-20 11:59:25 +01:00
tty_ldisc.c tty: add the option to have a tty reject a new ldisc 2024-06-27 13:49:05 +02:00
tty_ldsem.c tty/ldsem: Fix syntax errors in comments 2021-12-21 09:15:49 +01:00
tty_mutex.c tty: remove TTY_MAGIC 2022-09-22 16:12:34 +02:00
tty_port.c tty: use u8 for flags 2023-08-11 21:12:45 +02:00
ttynull.c tty: make tty_operations::write()'s count size_t 2023-08-11 21:12:46 +02:00
vcc.c tty: vcc: Add check for kstrdup() in vcc_probe() 2023-11-28 17:19:45 +00:00