* [PATCH 2/3] arcmsr: Fix command throttling for ARC188x series adapters
@ 2013-07-17 2:59 黃清隆
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From: 黃清隆 @ 2013-07-17 2:59 UTC (permalink / raw)
To: linux-scsi, linux-kernel
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From: Chingching2048@areca.com.tw
Fix command throttling for ARC188x series adapters.
Signed-off-by: Chingching2048@areca.com.tw
---
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diff -uprN a/drivers/scsi/arcmsr/arcmsr_hba.c b/drivers/scsi/arcmsr/arcmsr_hba.c
--- a/drivers/scsi/arcmsr/arcmsr_hba.c 2013-05-07 19:12:12.000000000 +0800
+++ b/drivers/scsi/arcmsr/arcmsr_hba.c 2013-05-16 04:20:04.000000000 +0800
@@ -2461,12 +2461,12 @@ arcmsr_hbaC_postqueue_isr(struct Adapter
? true : false;
/* check if command done with no error */
arcmsr_drain_donequeue(acb, ccb, error);
+ throttling++;
if (throttling == ARCMSR_HBC_ISR_THROTTLING_LEVEL) {
writel(ARCMSR_HBCMU_DRV2IOP_POSTQUEUE_THROTTLING,
&phbcmu->inbound_doorbell);
- continue;
+ throttling = 0;
}
- throttling++;
} while (readl(&phbcmu->host_int_status) &
ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR);
}
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