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| author | Simon Kagstrom <simon.kagstrom@netinsight.net> | 2010-01-11 15:57:24 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-01-11 15:39:21 +0000 |
| commit | cc20b900be7aa8e456aff82dfcb55fb15c508962 (patch) | |
| tree | e031b4397bf585a3c9cf97a373400c2e269416a5 | |
| parent | 4c9f8be7dab831c78b5f491739fc5cd01f2efb03 (diff) | |
| download | op-kernel-dev-cc20b900be7aa8e456aff82dfcb55fb15c508962.zip op-kernel-dev-cc20b900be7aa8e456aff82dfcb55fb15c508962.tar.gz | |
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 <simon.kagstrom@netinsight.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| -rw-r--r-- | drivers/serial/21285.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/serial/21285.c b/drivers/serial/21285.c index 1e3d193..8681f13 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; } } |
