The patch improves verify_port procedure by comparing the type of
port and IRQ numbers simultaneously. This can be important in the
case of multiple drivers SCCNXP in the system that are different IRQs.
Signed-off-by: Alexander Shiyan <shc_work@xxxxxxx>
---
drivers/tty/serial/sccnxp.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/tty/serial/sccnxp.c b/drivers/tty/serial/sccnxp.c
index c773041..92e6195 100644
--- a/drivers/tty/serial/sccnxp.c
+++ b/drivers/tty/serial/sccnxp.c
@@ -713,8 +713,8 @@ static void sccnxp_config_port(struct uart_port *port, int flags)
static int sccnxp_verify_port(struct uart_port *port, struct serial_struct *s)
{
- if ((s->type == PORT_UNKNOWN) || (s->type == PORT_SC26XX))
- return 0;
+ if ((s->type != PORT_UNKNOWN) && (s->type != PORT_SC26XX))
+ return -EINVAL;
if (s->irq == port->irq)
return 0;
--
1.8.1.5
--
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