mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-09-15 23:25:07 +00:00
Code Issues Releases Wiki Activity

serial: sunhv: Initialize lock for non-registered console

Browse source 
The commit a3cb39d258
("serial: core: Allow detach and attach serial device for console")
changed a bit logic behind lock initialization since for most of the console
driver it's supposed to have lock already initialized even if console is not
enabled. However, it's not the case for Sparc HV console.

Initialize lock explicitly in the ->probe().

Note, there is still an open question should or shouldn't not this driver
register console properly.

Fixes: a3cb39d258 ("serial: core: Allow detach and attach serial device for console")
Reported-by: Anatoly Pugachev <matorola@gmail.com>
Cc: David Miller <davem@davemloft.net>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Tested-by: Anatoly Pugachev <matorola@gmail.com>
Link: https://lore.kernel.org/r/20200402172026.79478-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Andy Shevchenko 2020-04-02 20:20:26 +03:00 committed by Greg Kroah-Hartman
parent 18cc7ac8a2
commit 0f87aa66e8
1 changed files with 3 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

3
drivers/tty/serial/sunhv.c
View file

@ -567,6 +567,9 @@ static int hv_probe(struct platform_device *op)
sunserial_console_match(&sunhv_console, op->dev.of_node,
&sunhv_reg, port->line, false);
/* We need to initialize lock even for non-registered console */
spin_lock_init(&port->lock);
err = uart_add_one_port(&sunhv_reg, port);
if (err)
goto out_unregister_driver;