diff options
Diffstat (limited to 'target/linux/cns3xxx/patches-2.6.31/210-cns3xxx_smp_serial_fix.patch')
-rw-r--r-- | target/linux/cns3xxx/patches-2.6.31/210-cns3xxx_smp_serial_fix.patch | 39 |
1 files changed, 0 insertions, 39 deletions
diff --git a/target/linux/cns3xxx/patches-2.6.31/210-cns3xxx_smp_serial_fix.patch b/target/linux/cns3xxx/patches-2.6.31/210-cns3xxx_smp_serial_fix.patch deleted file mode 100644 index a9b45aefe5..0000000000 --- a/target/linux/cns3xxx/patches-2.6.31/210-cns3xxx_smp_serial_fix.patch +++ /dev/null @@ -1,39 +0,0 @@ ---- a/drivers/serial/8250.c -+++ b/drivers/serial/8250.c -@@ -1743,6 +1743,7 @@ static void serial8250_backup_timeout(un - 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. -@@ -1760,10 +1761,8 @@ static void serial8250_backup_timeout(un - * 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.info->xmit) || up->port.x_char) && - (lsr & UART_LSR_THRE)) { -@@ -1771,12 +1770,14 @@ static void serial8250_backup_timeout(un - iir |= UART_IIR_THRI; - } - -- if (!(iir & UART_IIR_NO_INT)) -- serial8250_handle_port(up); -- - if (is_real_interrupt(up->port.irq)) - serial_out(up, UART_IER, ier); - -+ spin_unlock_irqrestore(&up->port.lock, flags); -+ -+ if (!(iir & UART_IIR_NO_INT)) -+ serial8250_handle_port(up); -+ - /* Standard timer interval plus 0.2s to keep the port running */ - mod_timer(&up->timer, - jiffies + poll_timeout(up->port.timeout) + HZ / 5); |