orinoco_usb: avoid in_atomic

We expect to be either in process contect or soft interrupt context. So
use in_softirq instead.

Signed-off-by: David Kilroy <kilroyd@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/orinoco/orinoco_usb.c b/drivers/net/wireless/orinoco/orinoco_usb.c
index ce0069d..8e1b31c 100644
--- a/drivers/net/wireless/orinoco/orinoco_usb.c
+++ b/drivers/net/wireless/orinoco/orinoco_usb.c
@@ -701,7 +701,7 @@
 	case EZUSB_CTX_REQ_SUBMITTED:
 	case EZUSB_CTX_REQ_COMPLETE:
 	case EZUSB_CTX_RESP_RECEIVED:
-		if (in_atomic()) {
+		if (in_softirq()) {
 			/* If we get called from a timer, timeout timers don't
 			 * get the chance to run themselves. So we make sure
 			 * that we don't sleep for ever */