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farsync: fix support for over 30 cards

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We're trying to fill a 64 bit bitmap but only the lower 30 shifts work
because the shift wraps around.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Dan Carpenter 2012-10-08 21:20:48 +00:00 committed by David S. Miller
parent 1451ae6ef8
commit 50fb47ae4d
1 changed files with 1 additions and 1 deletions
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2
drivers/net/wan/farsync.c
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@ -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);
}