Messages in this thread Patch in this message |  | | From | Greg Kroah-Hartman <> | Subject | [PATCH 4.4 19/37] sparc: serial: sunhv: fix a double lock bug | Date | Sat, 19 Nov 2016 10:20:35 +0100 |
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4.4-stable review patch. If anyone has any objections, please let me know.
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From: Dan Carpenter <dan.carpenter@oracle.com>
[ Upstream commit 344e3c7734d5090b148c19ac6539b8947fed6767 ]
We accidentally take the "port->lock" twice in a row. This old code was supposed to be deleted.
Fixes: e58e241c1788 ('sparc: serial: Clean up the locking for -rt') Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- drivers/tty/serial/sunhv.c | 6 ------ 1 file changed, 6 deletions(-)
--- a/drivers/tty/serial/sunhv.c +++ b/drivers/tty/serial/sunhv.c @@ -490,12 +490,6 @@ static void sunhv_console_write_bychar(s locked = spin_trylock_irqsave(&port->lock, flags); else spin_lock_irqsave(&port->lock, flags); - if (port->sysrq) { - locked = 0; - } else if (oops_in_progress) { - locked = spin_trylock(&port->lock); - } else - spin_lock(&port->lock); for (i = 0; i < n; i++) { if (*s == '\n')
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