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-rw-r--r--drivers/serial/atmel_serial.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/serial/atmel_serial.c b/drivers/serial/atmel_serial.c
index 3551c5cb709..9d948bccafa 100644
--- a/drivers/serial/atmel_serial.c
+++ b/drivers/serial/atmel_serial.c
@@ -1531,7 +1531,7 @@ static int __devinit atmel_serial_probe(struct platform_device *pdev)
void *data;
int ret;
- BUILD_BUG_ON(!is_power_of_2(ATMEL_SERIAL_RINGSIZE));
+ BUILD_BUG_ON(ATMEL_SERIAL_RINGSIZE & (ATMEL_SERIAL_RINGSIZE - 1));
port = &atmel_ports[pdev->id];
port->backup_imr = 0;