diff options
| author | Xiang Chen <chenxiang66@hisilicon.com> | 2017-08-11 00:09:27 +0800 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2017-08-10 20:15:01 -0400 |
| commit | c16db736653f5319d1d9b0d176f1f80394bd2614 (patch) | |
| tree | 0099303fe3b33492b013b1d1d018f4a360ceea82 /drivers/scsi/hisi_sas | |
| parent | 917d3bdaf8f2ab3bace2bd60b78d83a2b3096d98 (diff) | |
| download | linux-c16db736653f5319d1d9b0d176f1f80394bd2614.tar.bz2 | |
scsi: hisi_sas: avoid potential v2 hw interrupt issue
When some interrupts happen together, we need to process every interrupt
one-by-one, and should not return immediately when one interrupt process
is finished being processed.
Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/hisi_sas')
| -rw-r--r-- | drivers/scsi/hisi_sas/hisi_sas_v2_hw.c | 19 |
1 files changed, 10 insertions, 9 deletions
diff --git a/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c index a6be33c36e86..8c504b437567 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c +++ b/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c @@ -2606,6 +2606,7 @@ static irqreturn_t int_phy_updown_v2_hw(int irq_no, void *p) struct hisi_hba *hisi_hba = p; u32 irq_msk; int phy_no = 0; + irqreturn_t res = IRQ_NONE; irq_msk = (hisi_sas_read32(hisi_hba, HGC_INVLD_DQE_INFO) >> HGC_INVLD_DQE_INFO_FB_CH0_OFF) & 0x1ff; @@ -2620,15 +2621,15 @@ static irqreturn_t int_phy_updown_v2_hw(int irq_no, void *p) case CHL_INT0_SL_PHY_ENABLE_MSK: /* phy up */ if (phy_up_v2_hw(phy_no, hisi_hba) == - IRQ_NONE) - return IRQ_NONE; + IRQ_HANDLED) + res = IRQ_HANDLED; break; case CHL_INT0_NOT_RDY_MSK: /* phy down */ if (phy_down_v2_hw(phy_no, hisi_hba) == - IRQ_NONE) - return IRQ_NONE; + IRQ_HANDLED) + res = IRQ_HANDLED; break; case (CHL_INT0_NOT_RDY_MSK | @@ -2638,13 +2639,13 @@ static irqreturn_t int_phy_updown_v2_hw(int irq_no, void *p) if (reg_value & BIT(phy_no)) { /* phy up */ if (phy_up_v2_hw(phy_no, hisi_hba) == - IRQ_NONE) - return IRQ_NONE; + IRQ_HANDLED) + res = IRQ_HANDLED; } else { /* phy down */ if (phy_down_v2_hw(phy_no, hisi_hba) == - IRQ_NONE) - return IRQ_NONE; + IRQ_HANDLED) + res = IRQ_HANDLED; } break; @@ -2657,7 +2658,7 @@ static irqreturn_t int_phy_updown_v2_hw(int irq_no, void *p) phy_no++; } - return IRQ_HANDLED; + return res; } static void phy_bcast_v2_hw(int phy_no, struct hisi_hba *hisi_hba) |