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-rw-r--r--drivers/char/hvc_console.c10
1 files changed, 7 insertions, 3 deletions
diff --git a/drivers/char/hvc_console.c b/drivers/char/hvc_console.c
index 4b776f4..46508a7 100644
--- a/drivers/char/hvc_console.c
+++ b/drivers/char/hvc_console.c
@@ -254,13 +254,17 @@ static void hvc_kick(void)
wake_up_process(hvc_task);
}
+static int hvc_poll(struct hvc_struct *hp);
+
/*
* NOTE: This API isn't used if the console adapter doesn't support interrupts.
* In this case the console is poll driven.
*/
static irqreturn_t hvc_handle_interrupt(int irq, void *dev_instance, struct pt_regs *regs)
{
- hvc_kick();
+ /* if hvc_poll request a repoll, then kick the hvcd thread */
+ if (hvc_poll(dev_instance))
+ hvc_kick();
return IRQ_HANDLED;
}
@@ -598,8 +602,8 @@ static int hvc_poll(struct hvc_struct *hp)
/*
* Account for the total amount read in one loop, and if above
- * 64 bytes, we do a quick schedule loop to let the tty grok the
- * data and eventually throttle us.
+ * 64 bytes, we do a quick schedule loop to let the tty grok
+ * the data and eventually throttle us.
*/
read_total += n;
if (read_total >= 64) {
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