diff options
| author | David S. Miller <davem@davemloft.net> | 2019-12-22 15:15:05 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-12-22 15:15:05 -0800 |
| commit | ac80010fc94eb0680d9a432b639583bd7ac29066 (patch) | |
| tree | 2de924c048910abfbfff52a3d5188a790ead379f /drivers/tty/serial/msm_serial.c | |
| parent | cfeec3fb5451c2edd0569c0c245868612a417e5f (diff) | |
| parent | c60174717544aa8959683d7e19d568309c3a0c65 (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Mere overlapping changes in the conflicts here.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/tty/serial/msm_serial.c')
| -rw-r--r-- | drivers/tty/serial/msm_serial.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/drivers/tty/serial/msm_serial.c b/drivers/tty/serial/msm_serial.c index 1cbae0768b1f..f6c45a796433 100644 --- a/drivers/tty/serial/msm_serial.c +++ b/drivers/tty/serial/msm_serial.c @@ -1580,6 +1580,7 @@ static void __msm_console_write(struct uart_port *port, const char *s, int num_newlines = 0; bool replaced = false; void __iomem *tf; + int locked = 1; if (is_uartdm) tf = port->membase + UARTDM_TF; @@ -1592,7 +1593,13 @@ static void __msm_console_write(struct uart_port *port, const char *s, num_newlines++; count += num_newlines; - spin_lock(&port->lock); + if (port->sysrq) + locked = 0; + else if (oops_in_progress) + locked = spin_trylock(&port->lock); + else + spin_lock(&port->lock); + if (is_uartdm) msm_reset_dm_count(port, count); @@ -1628,7 +1635,9 @@ static void __msm_console_write(struct uart_port *port, const char *s, iowrite32_rep(tf, buf, 1); i += num_chars; } - spin_unlock(&port->lock); + + if (locked) + spin_unlock(&port->lock); } static void msm_console_write(struct console *co, const char *s, |