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Date: Sun, 14 Aug 2016 22:38:37 +0200 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, Manish Chopra <manish.chopra@...gic.com>, Yuval Mintz <Yuval.Mintz@...gic.com>, "David S. Miller" <davem@...emloft.net> Subject: [PATCH 4.7 11/41] qed: Fix setting/clearing bit in completion bitmap 4.7-stable review patch. If anyone has any objections, please let me know. ------------------ From: Manish Chopra <manish.chopra@...gic.com> [ Upstream commit 59d3f1ceb69b54569685d0c34dff16a1e0816b19 ] 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> Signed-off-by: David S. Miller <davem@...emloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org> --- drivers/net/ethernet/qlogic/qed/qed_spq.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) --- 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 * * 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); }
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