[PATCH v2 4/5] scsi: ufs: tc-dwc-pci: Allow for MSI interrupt type

[Jose Abreu]

Newer Test Chips boards have MSI support. It does no harm to try to
request it as the function will fallback to legacy interrupts if MSI is
not supported.

Signed-off-by: Jose Abreu <Jose.Abreu@xxxxxxxxxxxx>

---

Changes from v1:
- Do not try to request MSIX vectors (Tomas)
- Add missing call to pci_free_irq_vectors() (Tomas)

Cc: "Winkler, Tomas" <tomas.winkler@xxxxxxxxx>
Cc: Joao Lima <Joao.Lima@xxxxxxxxxxxx>
Cc: Jose Abreu <Jose.Abreu@xxxxxxxxxxxx>
Cc: Alim Akhtar <alim.akhtar@xxxxxxxxxxx>
Cc: Avri Altman <avri.altman@xxxxxxx>
Cc: "James E.J. Bottomley" <jejb@xxxxxxxxxxxxx>
Cc: "Martin K. Petersen" <martin.petersen@xxxxxxxxxx>
Cc: linux-scsi@xxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
---
 drivers/scsi/ufs/tc-dwc-pci.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/drivers/scsi/ufs/tc-dwc-pci.c b/drivers/scsi/ufs/tc-dwc-pci.c
index 74a2d80d32bd..78dc6c484e84 100644
--- a/drivers/scsi/ufs/tc-dwc-pci.c
+++ b/drivers/scsi/ufs/tc-dwc-pci.c
@@ -88,6 +88,7 @@ static void tc_dwc_pci_remove(struct pci_dev *pdev)
 	pm_runtime_forbid(&pdev->dev);
 	pm_runtime_get_noresume(&pdev->dev);
 	ufshcd_remove(hba);
+	pci_free_irq_vectors(pdev);
 }
 
 /**
@@ -136,11 +137,18 @@ tc_dwc_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 		return -ENOENT;
 	}
 
+	err = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_LEGACY | PCI_IRQ_MSI);
+	if (err < 0) {
+		dev_err(&pdev->dev, "Allocation failed\n");
+		return err;
+	}
+
 	hba->vops = &data->ops;
 
-	err = ufshcd_init(hba, mmio_base, pdev->irq);
+	err = ufshcd_init(hba, mmio_base, pci_irq_vector(pdev, 0));
 	if (err) {
 		dev_err(&pdev->dev, "Initialization failed\n");
+		pci_free_irq_vectors(pdev);
 		return err;
 	}
 
-- 
2.7.4