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Subject[GIT PULL] SCSI fixes for 5.19-rc4
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Date
One simple driver fix for a dma overrun.

The patch is available here:

git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi.git scsi-fixes

The short changelog is:

John Garry (1):
scsi: hisi_sas: Limit max hw sectors for v3 HW

And the diffstat:

drivers/scsi/hisi_sas/hisi_sas_v3_hw.c | 7 +++++++
1 file changed, 7 insertions(+)

With full diff below.

James

---

diff --git a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
index 7d819fc0395e..eb86afb21aab 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
@@ -2782,6 +2782,7 @@ static int slave_configure_v3_hw(struct scsi_device *sdev)
struct hisi_hba *hisi_hba = shost_priv(shost);
struct device *dev = hisi_hba->dev;
int ret = sas_slave_configure(sdev);
+ unsigned int max_sectors;

if (ret)
return ret;
@@ -2799,6 +2800,12 @@ static int slave_configure_v3_hw(struct scsi_device *sdev)
}
}

+ /* Set according to IOMMU IOVA caching limit */
+ max_sectors = min_t(size_t, queue_max_hw_sectors(sdev->request_queue),
+ (PAGE_SIZE * 32) >> SECTOR_SHIFT);
+
+ blk_queue_max_hw_sectors(sdev->request_queue, max_sectors);
+
return 0;
}

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