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| author | Colin Cross <ccross@android.com> | 2011-10-27 15:01:19 -0700 |
|---|---|---|
| committer | Colin Cross <ccross@android.com> | 2011-10-27 15:01:19 -0700 |
| commit | 2bb3e310159b65c88caf0c67a20ed257568be267 (patch) | |
| tree | e4ad01c06a9e27939781c5dd9d0cb92e6fcd54d5 /drivers/tty/serial/8250.c | |
| parent | 2f53cb72c1574d3880d9e88e254b756565fe2f6d (diff) | |
| parent | 97596c34030ed28657ccafddb67e17a03890b90a (diff) | |
| download | kernel_samsung_aries-2bb3e310159b65c88caf0c67a20ed257568be267.zip kernel_samsung_aries-2bb3e310159b65c88caf0c67a20ed257568be267.tar.gz kernel_samsung_aries-2bb3e310159b65c88caf0c67a20ed257568be267.tar.bz2 | |
Merge commit 'v3.0.8' into android-3.0
Diffstat (limited to 'drivers/tty/serial/8250.c')
| -rw-r--r-- | drivers/tty/serial/8250.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/tty/serial/8250.c b/drivers/tty/serial/8250.c index d32b5bb..762ce72 100644 --- a/drivers/tty/serial/8250.c +++ b/drivers/tty/serial/8250.c @@ -1819,6 +1819,8 @@ static void serial8250_backup_timeout(unsigned long data) unsigned int iir, ier = 0, lsr; unsigned long flags; + spin_lock_irqsave(&up->port.lock, flags); + /* * Must disable interrupts or else we risk racing with the interrupt * based handler. @@ -1836,10 +1838,8 @@ static void serial8250_backup_timeout(unsigned long data) * the "Diva" UART used on the management processor on many HP * ia64 and parisc boxes. */ - spin_lock_irqsave(&up->port.lock, flags); lsr = serial_in(up, UART_LSR); up->lsr_saved_flags |= lsr & LSR_SAVE_FLAGS; - spin_unlock_irqrestore(&up->port.lock, flags); if ((iir & UART_IIR_NO_INT) && (up->ier & UART_IER_THRI) && (!uart_circ_empty(&up->port.state->xmit) || up->port.x_char) && (lsr & UART_LSR_THRE)) { @@ -1848,11 +1848,13 @@ static void serial8250_backup_timeout(unsigned long data) } if (!(iir & UART_IIR_NO_INT)) - serial8250_handle_port(up); + transmit_chars(up); if (is_real_interrupt(up->port.irq)) serial_out(up, UART_IER, ier); + spin_unlock_irqrestore(&up->port.lock, flags); + /* Standard timer interval plus 0.2s to keep the port running */ mod_timer(&up->timer, jiffies + uart_poll_timeout(&up->port) + HZ / 5); |