[SCSI] ufs: don't disable_irq() if the IRQ can be shared among devices

When removing the UFS driver, disable_irq() is called and the IRQ is
not enabled again.  Unfortunately, the IRQ is requested with IRQF_SHARED
and it can be shared among several devices.  So disabling the IRQ in
this way is just breaking other devices which are sharing the IRQ.
Signed-off-by: Akinobu Mita <mita@fixstars.com>
Signed-off-by: Santosh Y <santoshsy@gmail.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

drivers/scsi/ufs/ufshcd-pci.c

@@ -131,8 +131,6 @@ static void ufshcd_pci_remove(struct pci_dev *pdev)
 
 	pm_runtime_forbid(&pdev->dev);
 	pm_runtime_get_noresume(&pdev->dev);
-
-	disable_irq(pdev->irq);
 	ufshcd_remove(hba);
 	pci_set_drvdata(pdev, NULL);
 }

drivers/scsi/ufs/ufshcd-pltfrm.c

@@ -188,8 +188,6 @@ static int ufshcd_pltfrm_remove(struct platform_device *pdev)
 	struct ufs_hba *hba =  platform_get_drvdata(pdev);
 
 	pm_runtime_get_sync(&(pdev)->dev);
-
-	disable_irq(hba->irq);
 	ufshcd_remove(hba);
 	return 0;
 }