[libata sata_uli] kill scr_addr abuse

sata_uli was storing PCI config addresses in a variable intended for
port addresses, a variable soon to become void __iomem *.

Update the driver to store the SCR address, found in PCI config space,
in the driver-private data area.

1 files changed, 27 insertions, 10 deletions

diff --git a/drivers/scsi/sata_uli.c b/drivers/scsi/sata_uli.c
index 8f5025733def..7ac5a5f5a905 100644
--- a/drivers/scsi/sata_uli.c
+++ b/drivers/scsi/sata_uli.c
@@ -44,6 +44,8 @@ enum {
         uli_5287                = 1,
         uli_5281                = 2,
 
+        uli_max_ports           = 4,
+
         /* PCI configuration registers */
         ULI5287_BASE            = 0x90, /* sata0 phy SCR registers */
         ULI5287_OFFS            = 0x10, /* offset from sata0->sata1 phy regs */
@@ -51,6 +53,10 @@ enum {
         ULI5281_OFFS            = 0x60, /* offset from sata0->sata1 phy regs */
 };
 
+struct uli_priv {
+        unsigned int            scr_cfg_addr[uli_max_ports];
+};
+
 static int uli_init_one (struct pci_dev *pdev, const struct pci_device_id *ent);
 static u32 uli_scr_read (struct ata_port *ap, unsigned int sc_reg);
 static void uli_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val);
@@ -137,7 +143,8 @@ MODULE_VERSION(DRV_VERSION);
 
 static unsigned int get_scr_cfg_addr(struct ata_port *ap, unsigned int sc_reg)
 {
-        return ap->ioaddr.scr_addr + (4 * sc_reg);
+        struct uli_priv *hpriv = ap->host_set->private_data;
+        return hpriv->scr_cfg_addr[ap->port_no] + (4 * sc_reg);
 }
 
 static u32 uli_scr_cfg_read (struct ata_port *ap, unsigned int sc_reg)
@@ -182,6 +189,7 @@ static int uli_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
         int rc;
         unsigned int board_idx = (unsigned int) ent->driver_data;
         int pci_dev_busy = 0;
+        struct uli_priv *hpriv;
 
         if (!printed_version++)
                 dev_printk(KERN_INFO, &pdev->dev, "version " DRV_VERSION "\n");
@@ -210,10 +218,18 @@ static int uli_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
                 goto err_out_regions;
         }
 
+        hpriv = kzalloc(sizeof(*hpriv), GFP_KERNEL);
+        if (!hpriv) {
+                rc = -ENOMEM;
+                goto err_out_probe_ent;
+        }
+
+        probe_ent->private_data = hpriv;
+
         switch (board_idx) {
         case uli_5287:
-                probe_ent->port[0].scr_addr = ULI5287_BASE;
-                probe_ent->port[1].scr_addr = ULI5287_BASE + ULI5287_OFFS;
+                hpriv->scr_cfg_addr[0] = ULI5287_BASE;
+                hpriv->scr_cfg_addr[1] = ULI5287_BASE + ULI5287_OFFS;
                 probe_ent->n_ports = 4;
 
                 probe_ent->port[2].cmd_addr = pci_resource_start(pdev, 0) + 8;
@@ -221,27 +237,27 @@ static int uli_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
                 probe_ent->port[2].ctl_addr =
                         (pci_resource_start(pdev, 1) | ATA_PCI_CTL_OFS) + 4;
                 probe_ent->port[2].bmdma_addr = pci_resource_start(pdev, 4) + 16;
-                probe_ent->port[2].scr_addr = ULI5287_BASE + ULI5287_OFFS*4;
+                hpriv->scr_cfg_addr[2] = ULI5287_BASE + ULI5287_OFFS*4;
 
                 probe_ent->port[3].cmd_addr = pci_resource_start(pdev, 2) + 8;
                 probe_ent->port[3].altstatus_addr =
                 probe_ent->port[3].ctl_addr =
                         (pci_resource_start(pdev, 3) | ATA_PCI_CTL_OFS) + 4;
                 probe_ent->port[3].bmdma_addr = pci_resource_start(pdev, 4) + 24;
-                probe_ent->port[3].scr_addr = ULI5287_BASE + ULI5287_OFFS*5;
+                hpriv->scr_cfg_addr[3] = ULI5287_BASE + ULI5287_OFFS*5;
 
                 ata_std_ports(&probe_ent->port[2]);
                 ata_std_ports(&probe_ent->port[3]);
                 break;
 
         case uli_5289:
-                probe_ent->port[0].scr_addr = ULI5287_BASE;
-                probe_ent->port[1].scr_addr = ULI5287_BASE + ULI5287_OFFS;
+                hpriv->scr_cfg_addr[0] = ULI5287_BASE;
+                hpriv->scr_cfg_addr[1] = ULI5287_BASE + ULI5287_OFFS;
                 break;
 
         case uli_5281:
-                probe_ent->port[0].scr_addr = ULI5281_BASE;
-                probe_ent->port[1].scr_addr = ULI5281_BASE + ULI5281_OFFS;
+                hpriv->scr_cfg_addr[0] = ULI5281_BASE;
+                hpriv->scr_cfg_addr[1] = ULI5281_BASE + ULI5281_OFFS;
                 break;
 
         default:
@@ -258,9 +274,10 @@ static int uli_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
 
         return 0;
 
+err_out_probe_ent:
+        kfree(probe_ent);
 err_out_regions:
         pci_release_regions(pdev);
-
 err_out:
         if (!pci_dev_busy)
                 pci_disable_device(pdev);