diff options
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/hvc/hvc_console.h | 1 | ||||
| -rw-r--r-- | drivers/tty/hvc/hvc_irq.c | 9 | ||||
| -rw-r--r-- | drivers/tty/hvc/hvc_opal.c | 11 | ||||
| -rw-r--r-- | drivers/tty/serial/sunhv.c | 6 | ||||
| -rw-r--r-- | drivers/tty/sysrq.c | 1 |
5 files changed, 19 insertions, 9 deletions
diff --git a/drivers/tty/hvc/hvc_console.h b/drivers/tty/hvc/hvc_console.h index 913101980827..798c48d0d32c 100644 --- a/drivers/tty/hvc/hvc_console.h +++ b/drivers/tty/hvc/hvc_console.h @@ -60,6 +60,7 @@ struct hvc_struct { struct winsize ws; struct work_struct tty_resize; struct list_head next; + unsigned long flags; }; /* implemented by a low level driver */ diff --git a/drivers/tty/hvc/hvc_irq.c b/drivers/tty/hvc/hvc_irq.c index c9adb0559f61..bc7a96874637 100644 --- a/drivers/tty/hvc/hvc_irq.c +++ b/drivers/tty/hvc/hvc_irq.c @@ -14,6 +14,11 @@ static irqreturn_t hvc_handle_interrupt(int irq, void *dev_instance) /* if hvc_poll request a repoll, then kick the hvcd thread */ if (hvc_poll(dev_instance)) hvc_kick(); + + /* + * We're safe to always return IRQ_HANDLED as the hvcd thread will + * iterate through each hvc_struct. + */ return IRQ_HANDLED; } @@ -28,8 +33,8 @@ int notifier_add_irq(struct hvc_struct *hp, int irq) hp->irq_requested = 0; return 0; } - rc = request_irq(irq, hvc_handle_interrupt, 0, - "hvc_console", hp); + rc = request_irq(irq, hvc_handle_interrupt, hp->flags, + "hvc_console", hp); if (!rc) hp->irq_requested = 1; return rc; diff --git a/drivers/tty/hvc/hvc_opal.c b/drivers/tty/hvc/hvc_opal.c index 47b54c6aefd2..510799311099 100644 --- a/drivers/tty/hvc/hvc_opal.c +++ b/drivers/tty/hvc/hvc_opal.c @@ -214,7 +214,13 @@ static int hvc_opal_probe(struct platform_device *dev) dev->dev.of_node->full_name, boot ? " (boot console)" : ""); - irq = opal_event_request(ilog2(OPAL_EVENT_CONSOLE_INPUT)); + irq = irq_of_parse_and_map(dev->dev.of_node, 0); + if (!irq) { + pr_info("hvc%d: No interrupts property, using OPAL event\n", + termno); + irq = opal_event_request(ilog2(OPAL_EVENT_CONSOLE_INPUT)); + } + if (!irq) { pr_err("hvc_opal: Unable to map interrupt for device %s\n", dev->dev.of_node->full_name); @@ -224,6 +230,9 @@ static int hvc_opal_probe(struct platform_device *dev) hp = hvc_alloc(termno, irq, ops, MAX_VIO_PUT_CHARS); if (IS_ERR(hp)) return PTR_ERR(hp); + + /* hvc consoles on powernv may need to share a single irq */ + hp->flags = IRQF_SHARED; dev_set_drvdata(&dev->dev, hp); return 0; diff --git a/drivers/tty/serial/sunhv.c b/drivers/tty/serial/sunhv.c index ca0d3802f2af..4e603d060e80 100644 --- a/drivers/tty/serial/sunhv.c +++ b/drivers/tty/serial/sunhv.c @@ -490,12 +490,6 @@ static void sunhv_console_write_bychar(struct console *con, const char *s, unsig 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') diff --git a/drivers/tty/sysrq.c b/drivers/tty/sysrq.c index e5139402e7f8..52bbd27e93ae 100644 --- a/drivers/tty/sysrq.c +++ b/drivers/tty/sysrq.c @@ -363,6 +363,7 @@ static void moom_callback(struct work_struct *ignored) struct oom_control oc = { .zonelist = node_zonelist(first_memory_node, gfp_mask), .nodemask = NULL, + .memcg = NULL, .gfp_mask = gfp_mask, .order = -1, }; |
