[PATCH] CCISS: request all PCI resources

We should call pci_request_regions() to claim all resources the device
decodes.  Previously, we claimed only the I/O port range.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Acked-by: Jeff Garzik <jeff@garzik.org>
Acked-by: Mike Miller <mike.miller@hp.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

2 files changed, 18 insertions, 46 deletions

diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c
index 83bd091fc6ce..45c4c3131c8f 100644
--- a/drivers/block/cciss.c
+++ b/drivers/block/cciss.c
@@ -2638,16 +2638,6 @@ static void print_cfg_table( CfgTable_struct *tb)
 }
 #endif /* CCISS_DEBUG */ 
 
-static void release_io_mem(ctlr_info_t *c)
-{
-        /* if IO mem was not protected do nothing */
-        if( c->io_mem_addr == 0)
-                return;
-        release_region(c->io_mem_addr, c->io_mem_length);
-        c->io_mem_addr = 0;
-        c->io_mem_length = 0;
-}
-
 static int find_PCI_BAR_index(struct pci_dev *pdev,
                                 unsigned long pci_bar_addr)
 {
@@ -2762,36 +2752,18 @@ static int cciss_pci_init(ctlr_info_t *c, struct pci_dev *pdev)
                 return err;
         }
 
+        err = pci_request_regions(pdev, "cciss");
+        if (err) {
+                printk(KERN_ERR "cciss: Cannot obtain PCI resources, "
+                        "aborting\n");
+                goto err_out_disable_pdev;
+        }
+
         subsystem_vendor_id = pdev->subsystem_vendor;
         subsystem_device_id = pdev->subsystem_device;
         board_id = (((__u32) (subsystem_device_id << 16) & 0xffff0000) |
                                         subsystem_vendor_id);
 
-        /* search for our IO range so we can protect it */
-        for(i=0; i<DEVICE_COUNT_RESOURCE; i++)
-        {
-                /* is this an IO range */ 
-                if( pci_resource_flags(pdev, i) & 0x01 ) {
-                        c->io_mem_addr = pci_resource_start(pdev, i);
-                        c->io_mem_length = pci_resource_end(pdev, i) -
-                                pci_resource_start(pdev, i) +1;
-#ifdef CCISS_DEBUG
-                        printk("IO value found base_addr[%d] %lx %lx\n", i,
-                                c->io_mem_addr, c->io_mem_length);
-#endif /* CCISS_DEBUG */
-                        /* register the IO range */ 
-                        if(!request_region( c->io_mem_addr,
-                                        c->io_mem_length, "cciss"))
-                        {
-                                printk(KERN_WARNING "cciss I/O memory range already in use addr=%lx length=%ld\n",
-                                c->io_mem_addr, c->io_mem_length);
-                                c->io_mem_addr= 0;
-                                c->io_mem_length = 0;
-                        } 
-                        break;
-                }
-        }
-
 #ifdef CCISS_DEBUG
         printk("command = %x\n", command);
         printk("irq = %x\n", pdev->irq);
@@ -2826,7 +2798,7 @@ static int cciss_pci_init(ctlr_info_t *c, struct pci_dev *pdev)
         if (scratchpad != CCISS_FIRMWARE_READY) {
                 printk(KERN_WARNING "cciss: Board not ready.  Timed out.\n");
                 err = -ENODEV;
-                goto err_out_disable_pdev;
+                goto err_out_free_res;
         }
 
         /* get the address index number */
@@ -2842,9 +2814,8 @@ static int cciss_pci_init(ctlr_info_t *c, struct pci_dev *pdev)
 #endif /* CCISS_DEBUG */
         if (cfg_base_addr_index == -1) {
                 printk(KERN_WARNING "cciss: Cannot find cfg_base_addr_index\n");
-                release_io_mem(c);
                 err = -ENODEV;
-                goto err_out_disable_pdev;
+                goto err_out_free_res;
         }
 
         cfg_offset = readl(c->vaddr + SA5_CTMEM_OFFSET);
@@ -2872,7 +2843,7 @@ static int cciss_pci_init(ctlr_info_t *c, struct pci_dev *pdev)
                         " to access the Smart Array controller %08lx\n", 
                                 (unsigned long)board_id);
                 err = -ENODEV;
-                goto err_out_disable_pdev;
+                goto err_out_free_res;
         }
         if (  (readb(&c->cfgtable->Signature[0]) != 'C') ||
               (readb(&c->cfgtable->Signature[1]) != 'I') ||
@@ -2881,7 +2852,7 @@ static int cciss_pci_init(ctlr_info_t *c, struct pci_dev *pdev)
         {
                 printk("Does not appear to be a valid CISS config table\n");
                 err = -ENODEV;
-                goto err_out_disable_pdev;
+                goto err_out_free_res;
         }
 
 #ifdef CONFIG_X86
@@ -2926,10 +2897,13 @@ static int cciss_pci_init(ctlr_info_t *c, struct pci_dev *pdev)
                 printk(KERN_WARNING "cciss: unable to get board into"
                                         " simple mode\n");
                 err = -ENODEV;
-                goto err_out_disable_pdev;
+                goto err_out_free_res;
         }
         return 0;
 
+err_out_free_res:
+        pci_release_regions(pdev);
+
 err_out_disable_pdev:
         pci_disable_device(pdev);
         return err;
@@ -3276,7 +3250,6 @@ clean4:
 clean2:
         unregister_blkdev(hba[i]->major, hba[i]->devname);
 clean1:
-        release_io_mem(hba[i]);
         hba[i]->busy_initializing = 0;
         free_hba(i);
         return(-1);
@@ -3322,7 +3295,6 @@ static void __devexit cciss_remove_one (struct pci_dev *pdev)
                 pci_disable_msi(hba[i]->pdev);
 #endif /* CONFIG_PCI_MSI */
 
-        pci_set_drvdata(pdev, NULL);
         iounmap(hba[i]->vaddr);
         cciss_unregister_scsi(i);  /* unhook from SCSI subsystem */
         unregister_blkdev(hba[i]->major, hba[i]->devname);
@@ -3349,7 +3321,9 @@ static void __devexit cciss_remove_one (struct pci_dev *pdev)
 #ifdef CONFIG_CISS_SCSI_TAPE
         kfree(hba[i]->scsi_rejects.complete);
 #endif
-        release_io_mem(hba[i]);
+        pci_release_regions(pdev);
+        pci_disable_device(pdev);
+        pci_set_drvdata(pdev, NULL);
         free_hba(i);
 }       
 
diff --git a/drivers/block/cciss.h b/drivers/block/cciss.h
index b24fc0553ccf..868e0d862b0d 100644
--- a/drivers/block/cciss.h
+++ b/drivers/block/cciss.h
@@ -60,8 +60,6 @@ struct ctlr_info
         __u32   board_id;
         void __iomem *vaddr;
         unsigned long paddr;
-        unsigned long io_mem_addr;
-        unsigned long io_mem_length;
         CfgTable_struct __iomem *cfgtable;
         int     interrupts_enabled;
         int     major;