From cc20b900be7aa8e456aff82dfcb55fb15c508962 Mon Sep 17 00:00:00 2001 From: Simon Kagstrom Date: Mon, 11 Jan 2010 15:57:24 +0100 Subject: [PATCH] ARM: 5874/1: serial21285: fix disable_irq-from-interrupt-handler deadlock The console hangs during bootup when disable_irq is called from the transmit interrupt handler (it will wait forever for it's "own" interrupt in synchronize_irq). Fix by using disable_irq_nosync() instead. Signed-off-by: Simon Kagstrom Signed-off-by: Russell King --- drivers/serial/21285.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/serial/21285.c b/drivers/serial/21285.c index 1e3d19397a59..8681f1345056 100644 --- a/drivers/serial/21285.c +++ b/drivers/serial/21285.c @@ -58,7 +58,7 @@ static const char serial21285_name[] = "Footbridge UART"; static void serial21285_stop_tx(struct uart_port *port) { if (tx_enabled(port)) { - disable_irq(IRQ_CONTX); + disable_irq_nosync(IRQ_CONTX); tx_enabled(port) = 0; } } @@ -74,7 +74,7 @@ static void serial21285_start_tx(struct uart_port *port) static void serial21285_stop_rx(struct uart_port *port) { if (rx_enabled(port)) { - disable_irq(IRQ_CONRX); + disable_irq_nosync(IRQ_CONRX); rx_enabled(port) = 0; } } -- 2.30.2