[PATCH 23/23] scsi: hisi_sas: add is_sata_phy_v2_hw()

[John Garry]

From: Xiaofei Tan <tanxiao...@huawei.com>

Add helper function is_sata_phy_v2_hw() to judge whether
the attached device is SATA disk for a root PHY.

Signed-off-by: Xiaofei Tan <tanxiao...@huawei.com>
Signed-off-by: John Garry <john.ga...@huawei.com>
---
 drivers/scsi/hisi_sas/hisi_sas_v2_hw.c | 17 +++++++++++++----
 1 file changed, 13 insertions(+), 4 deletions(-)

diff --git a/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c 
b/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c
index e9c7188..a3af380 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c
@@ -1075,6 +1075,17 @@ static void enable_phy_v2_hw(struct hisi_hba *hisi_hba, 
int phy_no)
        hisi_sas_phy_write32(hisi_hba, phy_no, PHY_CFG, cfg);
 }
 
+static bool is_sata_phy_v2_hw(struct hisi_hba *hisi_hba, int phy_no)
+{
+       u32 context;
+
+       context = hisi_sas_read32(hisi_hba, PHY_CONTEXT);
+       if (context & (1 << phy_no))
+               return true;
+
+       return false;
+}
+
 static void disable_phy_v2_hw(struct hisi_hba *hisi_hba, int phy_no)
 {
        u32 cfg = hisi_sas_phy_read32(hisi_hba, phy_no, PHY_CFG);
@@ -2286,7 +2297,7 @@ static int prep_abort_v2_hw(struct hisi_hba *hisi_hba,
 static int phy_up_v2_hw(int phy_no, struct hisi_hba *hisi_hba)
 {
        int i, res = IRQ_HANDLED;
-       u32 context, port_id, link_rate, hard_phy_linkrate;
+       u32 port_id, link_rate, hard_phy_linkrate;
        struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
        struct asd_sas_phy *sas_phy = &phy->sas_phy;
        struct device *dev = &hisi_hba->pdev->dev;
@@ -2295,9 +2306,7 @@ static int phy_up_v2_hw(int phy_no, struct hisi_hba 
*hisi_hba)
 
        hisi_sas_phy_write32(hisi_hba, phy_no, PHYCTRL_PHY_ENA_MSK, 1);
 
-       /* Check for SATA dev */
-       context = hisi_sas_read32(hisi_hba, PHY_CONTEXT);
-       if (context & (1 << phy_no))
+       if (is_sata_phy_v2_hw(hisi_hba, phy_no))
                goto end;
 
        if (phy_no == 8) {
-- 
1.9.1