From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Christoph Hellwig <hch@lst.de>,
"Martin K . Petersen" <martin.petersen@oracle.com>,
Sasha Levin <sashal@kernel.org>,
dc395x@twibble.org, linux-scsi@vger.kernel.org
Subject: [PATCH AUTOSEL 4.9 24/99] scsi: dc395x: fix DMA API usage in sg_update_list
Date: Sat, 16 Nov 2019 10:49:47 -0500 [thread overview]
Message-ID: <20191116155103.10971-24-sashal@kernel.org> (raw)
In-Reply-To: <20191116155103.10971-1-sashal@kernel.org>
From: Christoph Hellwig <hch@lst.de>
[ Upstream commit 6c404a68bf83b4135a8a9aa1c388ebdf98e8ba7f ]
We need to transfer device ownership to the CPU before we can manipulate
the mapped data.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/scsi/dc395x.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/scsi/dc395x.c b/drivers/scsi/dc395x.c
index 9da0ac360848f..830b2d2dcf206 100644
--- a/drivers/scsi/dc395x.c
+++ b/drivers/scsi/dc395x.c
@@ -1972,6 +1972,11 @@ static void sg_update_list(struct ScsiReqBlk *srb, u32 left)
xferred -= psge->length;
} else {
/* Partial SG entry done */
+ pci_dma_sync_single_for_cpu(srb->dcb->
+ acb->dev,
+ srb->sg_bus_addr,
+ SEGMENTX_LEN,
+ PCI_DMA_TODEVICE);
psge->length -= xferred;
psge->address += xferred;
srb->sg_index = idx;
--
2.20.1
next prev parent reply other threads:[~2019-11-16 15:51 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20191116155103.10971-1-sashal@kernel.org>
2019-11-16 15:49 ` [PATCH AUTOSEL 4.9 16/99] scsi: ips: fix missing break in switch Sasha Levin
2019-11-16 15:49 ` [PATCH AUTOSEL 4.9 18/99] scsi: isci: Use proper enumerated type in atapi_d2h_reg_frame_handler Sasha Levin
2019-11-16 15:49 ` [PATCH AUTOSEL 4.9 19/99] scsi: isci: Change sci_controller_start_task's return type to sci_status Sasha Levin
2019-11-16 15:49 ` [PATCH AUTOSEL 4.9 20/99] scsi: iscsi_tcp: Explicitly cast param in iscsi_sw_tcp_host_get_param Sasha Levin
2019-11-16 15:49 ` [PATCH AUTOSEL 4.9 23/99] scsi: dc395x: fix dma API usage in srb_done Sasha Levin
2019-11-16 15:49 ` Sasha Levin [this message]
2019-11-16 15:50 ` [PATCH AUTOSEL 4.9 83/99] scsi: mpt3sas: Fix Sync cache command failure during driver unload Sasha Levin
2019-11-16 15:50 ` [PATCH AUTOSEL 4.9 84/99] scsi: mpt3sas: Fix driver modifying persistent data in Manufacturing page11 Sasha Levin
2019-11-16 15:50 ` [PATCH AUTOSEL 4.9 85/99] scsi: megaraid_sas: Fix msleep granularity Sasha Levin
2019-11-16 15:50 ` [PATCH AUTOSEL 4.9 86/99] scsi: lpfc: fcoe: Fix link down issue after 1000+ link bounces Sasha Levin
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