linux/drivers/tty/hvc
Jiri Slaby 7ccbdcc4d0 hvsi: don't panic on tty_register_driver failure
The alloc_tty_driver failure is handled gracefully in hvsi_init. But
tty_register_driver is not. panic is called if that one fails.

So handle the failure of tty_register_driver gracefully too. This will
keep at least the console functional as it was enabled earlier by
console_initcall in hvsi_console_init. Instead of shooting down the
whole system.

This means, we disable interrupts and restore hvsi_wait back to
poll_for_state().

Cc: linuxppc-dev@lists.ozlabs.org
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Link: https://lore.kernel.org/r/20210723074317.32690-3-jslaby@suse.cz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-27 12:17:20 +02:00
..
hvc_console.c tty: hvc_console: Remove the repeated words 'no' and 'from' 2021-05-21 20:36:15 +02:00
hvc_console.h tty: hvc: Use the correct style for SPDX License Identifier 2020-03-18 13:01:05 +01:00
hvc_dcc.c hvc: dcc: Add earlycon support 2019-10-11 08:38:07 +02:00
hvc_irq.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
hvc_iucv.c TTY / Serial patches for 5.14-rc1 2021-07-05 14:08:24 -07:00
hvc_opal.c tty: hvc: hvc_opal: Staticify function invoked by reference 2020-11-06 10:54:05 +01:00
hvc_riscv_sbi.c tty: Don't force RISCV SBI console as preferred console 2019-05-16 20:42:11 -07:00
hvc_rtas.c tty: hvc: Remove redundant license text 2017-11-08 13:08:12 +01:00
hvc_udbg.c tty: hvc: make symbol 'hvc_udbg_dev' static 2021-04-10 10:41:40 +02:00
hvc_vio.c tty: hvc: udbg_hvc: retry putc on -EAGAIN 2021-05-23 20:51:36 +10:00
hvc_xen.c tty: hvc: replace BUG_ON() with negative return value 2021-07-21 15:57:28 +02:00
hvcs.c tty: make tty_operations::chars_in_buffer return uint 2021-05-13 18:29:11 +02:00
hvsi_lib.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
hvsi.c hvsi: don't panic on tty_register_driver failure 2021-07-27 12:17:20 +02:00
Kconfig tty: hvc: fix link error with CONFIG_SERIAL_CORE_CONSOLE=n 2020-09-27 14:17:43 +02:00
Makefile TTY/Serial driver patches for 4.17-rc1 2018-04-04 18:43:49 -07:00