netdev - [PATCH net] qed: Fix setting/clearing bit in completion bitmap

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Message-ID: <1469462866-14103-1-git-send-email-Yuval.Mintz@qlogic.com>
Date:	Mon, 25 Jul 2016 19:07:46 +0300
From:	Yuval Mintz <Yuval.Mintz@...gic.com>
To:	<netdev@...r.kernel.org>, <davem@...emloft.net>
CC:	Manish Chopra <manish.chopra@...gic.com>,
	Yuval Mintz <Yuval.Mintz@...gic.com>
Subject: [PATCH net] qed: Fix setting/clearing bit in completion bitmap

From: Manish Chopra <manish.chopra@...gic.com>

Slowpath completion handling is incorrectly changing
SPQ_RING_SIZE bits instead of a single one.

Fixes: 76a9a3642a0b ("qed: fix handling of concurrent ramrods")
Signed-off-by: Manish Chopra <manish.chopra@...gic.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@...gic.com>
---
Hi Dave,

Please consider applying this to 'net'.

Thanks,
Yuval
---
 drivers/net/ethernet/qlogic/qed/qed_spq.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/qlogic/qed/qed_spq.c b/drivers/net/ethernet/qlogic/qed/qed_spq.c
index b122f60..03601df 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_spq.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_spq.c
@@ -809,13 +809,12 @@ int qed_spq_completion(struct qed_hwfn *p_hwfn,
 			 * in a bitmap and increasing the chain consumer only
 			 * for the first successive completed entries.
 			 */
-			bitmap_set(p_spq->p_comp_bitmap, pos, SPQ_RING_SIZE);
+			__set_bit(pos, p_spq->p_comp_bitmap);
 
 			while (test_bit(p_spq->comp_bitmap_idx,
 					p_spq->p_comp_bitmap)) {
-				bitmap_clear(p_spq->p_comp_bitmap,
-					     p_spq->comp_bitmap_idx,
-					     SPQ_RING_SIZE);
+				__clear_bit(p_spq->comp_bitmap_idx,
+					    p_spq->p_comp_bitmap);
 				p_spq->comp_bitmap_idx++;
 				qed_chain_return_produced(&p_spq->chain);
 			}
-- 
2.7.2