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path: root/drivers/serial/serial_ks8695.c
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Diffstat (limited to 'drivers/serial/serial_ks8695.c')
-rw-r--r--drivers/serial/serial_ks8695.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/serial/serial_ks8695.c b/drivers/serial/serial_ks8695.c
index 998e89dc5aa..52db5cc3f90 100644
--- a/drivers/serial/serial_ks8695.c
+++ b/drivers/serial/serial_ks8695.c
@@ -110,7 +110,11 @@ static struct console ks8695_console;
static void ks8695uart_stop_tx(struct uart_port *port)
{
if (tx_enabled(port)) {
- disable_irq(KS8695_IRQ_UART_TX);
+ /* use disable_irq_nosync() and not disable_irq() to avoid self
+ * imposed deadlock by not waiting for irq handler to end,
+ * since this ks8695uart_stop_tx() is called from interrupt context.
+ */
+ disable_irq_nosync(KS8695_IRQ_UART_TX);
tx_enable(port, 0);
}
}
@@ -549,7 +553,7 @@ static struct uart_port ks8695uart_ports[SERIAL_KS8695_NR] = {
.mapbase = KS8695_UART_VA,
.iotype = SERIAL_IO_MEM,
.irq = KS8695_IRQ_UART_TX,
- .uartclk = CLOCK_TICK_RATE * 16,
+ .uartclk = KS8695_CLOCK_RATE * 16,
.fifosize = 16,
.ops = &ks8695uart_pops,
.flags = ASYNC_BOOT_AUTOCONF,