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-rw-r--r--drivers/net/wan/farsync.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/wan/farsync.c b/drivers/net/wan/farsync.c
index 1a623183cbe5..b6271325f803 100644
--- a/drivers/net/wan/farsync.c
+++ b/drivers/net/wan/farsync.c
@@ -597,7 +597,7 @@ fst_q_work_item(u64 * queue, int card_index)
* bottom half for the card. Note the limitation of 64 cards.
* That ought to be enough
*/
- mask = 1 << card_index;
+ mask = (u64)1 << card_index;
*queue |= mask;
spin_unlock_irqrestore(&fst_work_q_lock, flags);
}