diff options
Diffstat (limited to 'arch/um/drivers/line.c')
| -rw-r--r-- | arch/um/drivers/line.c | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/arch/um/drivers/line.c b/arch/um/drivers/line.c index 77ce63a57070..1c70a31e7c5b 100644 --- a/arch/um/drivers/line.c +++ b/arch/um/drivers/line.c @@ -262,19 +262,25 @@ static irqreturn_t line_write_interrupt(int irq, void *data) int line_setup_irq(int fd, int input, int output, struct line *line, void *data) { const struct line_driver *driver = line->driver; - int err = 0; + int err; - if (input) + if (input) { err = um_request_irq(driver->read_irq, fd, IRQ_READ, line_interrupt, IRQF_SHARED, driver->read_irq_name, data); - if (err) - return err; - if (output) + if (err < 0) + return err; + } + + if (output) { err = um_request_irq(driver->write_irq, fd, IRQ_WRITE, line_write_interrupt, IRQF_SHARED, driver->write_irq_name, data); - return err; + if (err < 0) + return err; + } + + return 0; } static int line_activate(struct tty_port *port, struct tty_struct *tty) |