From: Sasha Levin <sashal@kernel.org>
To: stable@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: Denis Bolotin <denis.bolotin@cavium.com>,
Michal Kalderon <michal.kalderon@cavium.com>,
"David S . Miller" <davem@davemloft.net>,
Sasha Levin <sashal@kernel.org>,
netdev@vger.kernel.org
Subject: [PATCH AUTOSEL 4.14 13/35] qed: Fix reading wrong value in loop condition
Date: Thu, 29 Nov 2018 01:00:47 -0500 [thread overview]
Message-ID: <20181129060110.159878-13-sashal@kernel.org> (raw)
In-Reply-To: <20181129060110.159878-1-sashal@kernel.org>
From: Denis Bolotin <denis.bolotin@cavium.com>
[ Upstream commit ed4eac20dcffdad47709422e0cb925981b056668 ]
The value of "sb_index" is written by the hardware. Reading its value and
writing it to "index" must finish before checking the loop condition.
Signed-off-by: Denis Bolotin <denis.bolotin@cavium.com>
Signed-off-by: Michal Kalderon <michal.kalderon@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/qlogic/qed/qed_int.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/net/ethernet/qlogic/qed/qed_int.c b/drivers/net/ethernet/qlogic/qed/qed_int.c
index 719cdbfe1695..7746417130bd 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_int.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_int.c
@@ -992,6 +992,8 @@ static int qed_int_attentions(struct qed_hwfn *p_hwfn)
*/
do {
index = p_sb_attn->sb_index;
+ /* finish reading index before the loop condition */
+ dma_rmb();
attn_bits = le32_to_cpu(p_sb_attn->atten_bits);
attn_acks = le32_to_cpu(p_sb_attn->atten_ack);
} while (index != p_sb_attn->sb_index);
--
2.17.1
next prev parent reply other threads:[~2018-11-29 6:02 UTC|newest]
Thread overview: 59+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-29 6:00 [PATCH AUTOSEL 4.14 01/35] media: omap3isp: Unregister media device as first Sasha Levin
2018-11-29 6:00 ` [PATCH AUTOSEL 4.14 02/35] iommu/vt-d: Fix NULL pointer dereference in prq_event_thread() Sasha Levin
2018-11-29 6:00 ` [PATCH AUTOSEL 4.14 03/35] brcmutil: really fix decoding channel info for 160 MHz bandwidth Sasha Levin
2018-11-29 6:00 ` [PATCH AUTOSEL 4.14 04/35] iommu/ipmmu-vmsa: Fix crash on early domain free Sasha Levin
2018-11-29 6:00 ` [PATCH AUTOSEL 4.14 05/35] can: rcar_can: Fix erroneous registration Sasha Levin
2018-11-29 6:00 ` [PATCH AUTOSEL 4.14 06/35] test_firmware: fix error return getting clobbered Sasha Levin
2018-11-29 6:00 ` [PATCH AUTOSEL 4.14 07/35] HID: input: Ignore battery reported by Symbol DS4308 Sasha Levin
2018-11-29 6:00 ` [PATCH AUTOSEL 4.14 08/35] batman-adv: Use explicit tvlv padding for ELP packets Sasha Levin
2018-11-29 6:00 ` [PATCH AUTOSEL 4.14 09/35] batman-adv: Expand merged fragment buffer for full packet Sasha Levin
2018-11-29 6:00 ` [PATCH AUTOSEL 4.14 10/35] amd/iommu: Fix Guest Virtual APIC Log Tail Address Register Sasha Levin
2018-11-29 6:00 ` [PATCH AUTOSEL 4.14 11/35] bnx2x: Assign unique DMAE channel number for FW DMAE transactions Sasha Levin
2018-11-29 6:00 ` [PATCH AUTOSEL 4.14 12/35] qed: Fix PTT leak in qed_drain() Sasha Levin
2018-11-29 6:00 ` Sasha Levin [this message]
2018-11-29 6:00 ` [PATCH AUTOSEL 4.14 14/35] Revert "usb: gadget: ffs: Fix BUG when userland exits with submitted AIO transfers" Sasha Levin
2018-11-29 6:00 ` [PATCH AUTOSEL 4.14 15/35] net/mlx4_core: Zero out lkey field in SW2HW_MPT fw command Sasha Levin
2018-11-29 6:00 ` [PATCH AUTOSEL 4.14 16/35] net/mlx4_core: Fix uninitialized variable compilation warning Sasha Levin
2018-11-29 6:00 ` [PATCH AUTOSEL 4.14 17/35] net/mlx4: Fix UBSAN warning of signed integer overflow Sasha Levin
2018-11-29 6:00 ` [PATCH AUTOSEL 4.14 18/35] gpio: mockup: fix indicated direction Sasha Levin
2018-11-29 6:00 ` [PATCH AUTOSEL 4.14 19/35] mtd: rawnand: qcom: Namespace prefix some commands Sasha Levin
2018-11-29 6:00 ` [PATCH AUTOSEL 4.14 20/35] exec: make de_thread() freezable Sasha Levin
2018-11-29 6:00 ` [PATCH AUTOSEL 4.14 21/35] HID: multitouch: Add pointstick support for Cirque Touchpad Sasha Levin
2018-11-29 6:00 ` [PATCH AUTOSEL 4.14 22/35] mtd: spi-nor: Fix Cadence QSPI page fault kernel panic Sasha Levin
2018-11-29 6:00 ` [PATCH AUTOSEL 4.14 23/35] qed: Fix bitmap_weight() check Sasha Levin
2018-11-29 6:00 ` [PATCH AUTOSEL 4.14 24/35] qed: Fix QM getters to always return a valid pq Sasha Levin
2018-11-29 6:00 ` [PATCH AUTOSEL 4.14 25/35] iomap: sub-block dio needs to zeroout beyond EOF Sasha Levin
2018-11-29 12:14 ` Dave Chinner
2018-11-29 12:47 ` Greg KH
2018-11-29 22:40 ` Dave Chinner
2018-11-30 8:22 ` Greg KH
2018-11-30 10:14 ` Sasha Levin
2018-11-30 20:35 ` Darrick J. Wong
2018-11-30 21:50 ` Dave Chinner
2018-12-01 7:49 ` Sasha Levin
2018-12-01 9:09 ` XFS patches for stable Amir Goldstein
2018-12-02 15:25 ` Sasha Levin
2018-12-02 16:10 ` Christoph Hellwig
2018-12-02 20:08 ` Greg KH
2018-12-03 14:41 ` Richard Weinberger
2018-12-03 16:56 ` Sasha Levin
2018-12-02 23:23 ` [PATCH AUTOSEL 4.14 25/35] iomap: sub-block dio needs to zeroout beyond EOF Dave Chinner
2018-12-03 7:11 ` Amir Goldstein
2018-12-03 9:22 ` Sasha Levin
2018-12-03 21:23 ` Thomas Backlund
2018-12-04 7:28 ` Greg KH
2018-12-04 8:12 ` Sasha Levin
2018-12-28 8:06 ` Pavel Machek
2018-12-29 23:35 ` Dave Chinner
2018-11-30 21:45 ` Dave Chinner
2018-12-02 20:11 ` Greg KH
2018-11-29 6:01 ` [PATCH AUTOSEL 4.14 26/35] net: faraday: ftmac100: remove netif_running(netdev) check before disabling interrupts Sasha Levin
2018-11-29 6:01 ` [PATCH AUTOSEL 4.14 27/35] iommu/vt-d: Use memunmap to free memremap Sasha Levin
2018-11-29 6:01 ` [PATCH AUTOSEL 4.14 28/35] flexfiles: use per-mirror specified stateid for IO Sasha Levin
2018-11-29 6:01 ` [PATCH AUTOSEL 4.14 29/35] net: thunderx: set xdp_prog to NULL if bpf_prog_add fails Sasha Levin
2018-11-29 6:01 ` [PATCH AUTOSEL 4.14 30/35] ibmvnic: Fix RX queue buffer cleanup Sasha Levin
2018-11-29 6:01 ` [PATCH AUTOSEL 4.14 31/35] virtio-net: disable guest csum during XDP set Sasha Levin
2018-11-29 6:01 ` [PATCH AUTOSEL 4.14 32/35] virtio-net: fail XDP set if guest csum is negotiated Sasha Levin
2018-11-29 6:01 ` [PATCH AUTOSEL 4.14 33/35] team: no need to do team_notify_peers or team_mcast_rejoin when disabling port Sasha Levin
2018-11-29 6:01 ` [PATCH AUTOSEL 4.14 34/35] net: amd: add missing of_node_put() Sasha Levin
2018-11-29 6:01 ` [PATCH AUTOSEL 4.14 35/35] net: thunderx: set tso_hdrs pointer to NULL in nicvf_free_snd_queue Sasha Levin
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