ipr: Rate limit DMA mapping errors

PATCH RESEND New Wayne Boyer 1 participant 1 message May 17, 2011

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SCSI IBM Power Linux RAID adapter

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Wayne Boyer

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2011-05-17 16:59 UTC #0 lore raw

PATCH RESEND 1/1 ipr: Rate limit DMA mapping errors

Resending this based on James' request that was sent to the linux-scsi list on May 10.

---

I noticed a stream of errors from the IPR driver while doing IOMMU fault injection. Rate limit the errors so we don't clog up the console and logfiles.

Signed-off-by Anton Blanchard <[email protected]>

---

drivers/scsi/ipr.c +2 -1

Index: linux-powerpc/drivers/scsi/ipr.c
===================================================================
@@ -5143,7 +5143,8 @@ static int ipr_build_ioadl64(struct ipr_
 
 	nseg = scsi_dma_map(scsi_cmd);
 	if (nseg < 0) {
-		dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n");
+		if (printk_ratelimit())
+			dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n");
 		return -1;
 	}

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