diff options
| -rw-r--r-- | nuttx/arch/rgmp/src/com.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/nuttx/arch/rgmp/src/com.c b/nuttx/arch/rgmp/src/com.c index 7f3f5028e5..e1b8febb2a 100644 --- a/nuttx/arch/rgmp/src/com.c +++ b/nuttx/arch/rgmp/src/com.c @@ -485,11 +485,14 @@ static void up_txint(struct uart_dev_s *dev, bool enable) { struct up_dev_s *priv = (struct up_dev_s*)dev->priv; uint16_t base = priv->base; + irqstate_t flags; uint8_t ier; + flags = irqsave(); ier = inb(base+COM_IER); if (enable) { ier |= COM_IER_TEI; + outb(base+COM_IER, ier); /* Fake a TX interrupt here by just calling uart_xmitchars() with * interrupts disabled (note this may recurse). @@ -499,8 +502,9 @@ static void up_txint(struct uart_dev_s *dev, bool enable) } else { ier &= ~COM_IER_TEI; + outb(base+COM_IER, ier); } - outb(base+COM_IER, ier); + irqrestore(flags); } /**************************************************************************** |