[PATCH] Char: stallion, convert to pci probing

Convert stallion driver to pci probing instead of pci_dev_get iteration.

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/drivers/char/stallion.c b/drivers/char/stallion.c
index 71bfdcc..6a9feb6 100644 (file)
--- a/drivers/char/stallion.c
+++ b/drivers/char/stallion.c
@@ -381,8 +381,6 @@ static spinlock_t stallion_lock;    /* Guard the tty driver */
 
 /*****************************************************************************/
 
-#ifdef CONFIG_PCI
-
 /*
  *     Define the Stallion PCI vendor and device IDs.
  */
@@ -402,22 +400,19 @@ static spinlock_t stallion_lock;  /* Guard the tty driver */
 /*
  *     Define structure to hold all Stallion PCI boards.
  */
-typedef struct stlpcibrd {
-       unsigned short          vendid;
-       unsigned short          devid;
-       int                     brdtype;
-} stlpcibrd_t;
-
-static stlpcibrd_t     stl_pcibrds[] = {
-       { PCI_VENDOR_ID_STALLION, PCI_DEVICE_ID_ECHPCI864, BRD_ECH64PCI },
-       { PCI_VENDOR_ID_STALLION, PCI_DEVICE_ID_EIOPCI, BRD_EASYIOPCI },
-       { PCI_VENDOR_ID_STALLION, PCI_DEVICE_ID_ECHPCI832, BRD_ECHPCI },
-       { PCI_VENDOR_ID_NS, PCI_DEVICE_ID_NS_87410, BRD_ECHPCI },
-};
 
-static int     stl_nrpcibrds = ARRAY_SIZE(stl_pcibrds);
-
-#endif
+static struct pci_device_id stl_pcibrds[] = {
+       { PCI_DEVICE(PCI_VENDOR_ID_STALLION, PCI_DEVICE_ID_ECHPCI864),
+               .driver_data = BRD_ECH64PCI },
+       { PCI_DEVICE(PCI_VENDOR_ID_STALLION, PCI_DEVICE_ID_EIOPCI),
+               .driver_data = BRD_EASYIOPCI },
+       { PCI_DEVICE(PCI_VENDOR_ID_STALLION, PCI_DEVICE_ID_ECHPCI832),
+               .driver_data = BRD_ECHPCI },
+       { PCI_DEVICE(PCI_VENDOR_ID_NS, PCI_DEVICE_ID_NS_87410),
+               .driver_data = BRD_ECHPCI },
+       { }
+};
+MODULE_DEVICE_TABLE(pci, stl_pcibrds);
 
 /*****************************************************************************/
 
@@ -2390,24 +2385,52 @@ static int __init stl_getbrdnr(void)
        return(-1);
 }
 
-/*****************************************************************************/
+static void stl_cleanup_panels(struct stlbrd *brdp)
+{
+       struct stlpanel *panelp;
+       struct stlport *portp;
+       unsigned int j, k;
 
-#ifdef CONFIG_PCI
+       for (j = 0; j < STL_MAXPANELS; j++) {
+               panelp = brdp->panels[j];
+               if (panelp == NULL)
+                       continue;
+               for (k = 0; k < STL_PORTSPERPANEL; k++) {
+                       portp = panelp->ports[k];
+                       if (portp == NULL)
+                               continue;
+                       if (portp->tty != NULL)
+                               stl_hangup(portp->tty);
+                       kfree(portp->tx.buf);
+                       kfree(portp);
+               }
+               kfree(panelp);
+       }
+}
 
+/*****************************************************************************/
 /*
  *     We have a Stallion board. Allocate a board structure and
  *     initialize it. Read its IO and IRQ resources from PCI
  *     configuration space.
  */
 
-static int __init stl_initpcibrd(int brdtype, struct pci_dev *devp)
+static int __devinit stl_pciprobe(struct pci_dev *pdev,
+               const struct pci_device_id *ent)
 {
-       struct stlbrd   *brdp;
+       struct stlbrd *brdp;
+       unsigned int brdtype = ent->driver_data;
 
        pr_debug("stl_initpcibrd(brdtype=%d,busnr=%x,devnr=%x)\n", brdtype,
-               devp->bus->number, devp->devfn);
+               pdev->bus->number, pdev->devfn);
+
+       if ((pdev->class >> 8) == PCI_CLASS_STORAGE_IDE)
+               return -ENODEV;
+
+       dev_info(&pdev->dev, "please, report this to LKML: %x/%x/%x\n",
+                       pdev->vendor, pdev->device, pdev->class);
 
-       if (pci_enable_device(devp))
+       if (pci_enable_device(pdev))
                return(-EIO);
        if ((brdp = stl_allocbrd()) == NULL)
                return(-ENOMEM);
@@ -2423,8 +2446,8 @@ static int __init stl_initpcibrd(int brdtype, struct pci_dev *devp)
  *     so set up io addresses based on board type.
  */
        pr_debug("%s(%d): BAR[]=%Lx,%Lx,%Lx,%Lx IRQ=%x\n", __FILE__, __LINE__,
-               pci_resource_start(devp, 0), pci_resource_start(devp, 1),
-               pci_resource_start(devp, 2), pci_resource_start(devp, 3), devp->irq);
+               pci_resource_start(pdev, 0), pci_resource_start(pdev, 1),
+               pci_resource_start(pdev, 2), pci_resource_start(pdev, 3), pdev->irq);
 
 /*
  *     We have all resources from the board, so let's setup the actual
@@ -2432,63 +2455,52 @@ static int __init stl_initpcibrd(int brdtype, struct pci_dev *devp)
  */
        switch (brdtype) {
        case BRD_ECHPCI:
-               brdp->ioaddr2 = pci_resource_start(devp, 0);
-               brdp->ioaddr1 = pci_resource_start(devp, 1);
+               brdp->ioaddr2 = pci_resource_start(pdev, 0);
+               brdp->ioaddr1 = pci_resource_start(pdev, 1);
                break;
        case BRD_ECH64PCI:
-               brdp->ioaddr2 = pci_resource_start(devp, 2);
-               brdp->ioaddr1 = pci_resource_start(devp, 1);
+               brdp->ioaddr2 = pci_resource_start(pdev, 2);
+               brdp->ioaddr1 = pci_resource_start(pdev, 1);
                break;
        case BRD_EASYIOPCI:
-               brdp->ioaddr1 = pci_resource_start(devp, 2);
-               brdp->ioaddr2 = pci_resource_start(devp, 1);
+               brdp->ioaddr1 = pci_resource_start(pdev, 2);
+               brdp->ioaddr2 = pci_resource_start(pdev, 1);
                break;
        default:
                printk("STALLION: unknown PCI board type=%d\n", brdtype);
                break;
        }
 
-       brdp->irq = devp->irq;
+       brdp->irq = pdev->irq;
        stl_brdinit(brdp);
 
+       pci_set_drvdata(pdev, brdp);
+
        return(0);
 }
 
-/*****************************************************************************/
-
-/*
- *     Find all Stallion PCI boards that might be installed. Initialize each
- *     one as it is found.
- */
-
-
-static int __init stl_findpcibrds(void)
+static void __devexit stl_pciremove(struct pci_dev *pdev)
 {
-       struct pci_dev  *dev = NULL;
-       int             i, rc;
-
-       pr_debug("stl_findpcibrds()\n");
+       struct stlbrd *brdp = pci_get_drvdata(pdev);
 
-       for (i = 0; (i < stl_nrpcibrds); i++)
-               while ((dev = pci_get_device(stl_pcibrds[i].vendid,
-                   stl_pcibrds[i].devid, dev))) {
+       free_irq(brdp->irq, brdp);
 
-/*
- *                     Found a device on the PCI bus that has our vendor and
- *                     device ID. Need to check now that it is really us.
- */
-                       if ((dev->class >> 8) == PCI_CLASS_STORAGE_IDE)
-                               continue;
+       stl_cleanup_panels(brdp);
 
-                       rc = stl_initpcibrd(stl_pcibrds[i].brdtype, dev);
-                       if (rc)
-                               return(rc);
-               }
+       release_region(brdp->ioaddr1, brdp->iosize1);
+       if (brdp->iosize2 > 0)
+               release_region(brdp->ioaddr2, brdp->iosize2);
 
-       return(0);
+       stl_brds[brdp->brdnr] = NULL;
+       kfree(brdp);
 }
 
-#endif
+static struct pci_driver stl_pcidriver = {
+       .name = "stallion",
+       .id_table = stl_pcibrds,
+       .probe = stl_pciprobe,
+       .remove = __devexit_p(stl_pciremove)
+};
 
 /*****************************************************************************/
 
@@ -2535,9 +2547,6 @@ static int __init stl_initbrds(void)
  *     line options or auto-detected on the PCI bus.
  */
        stl_argbrds();
-#ifdef CONFIG_PCI
-       stl_findpcibrds();
-#endif
 
        return(0);
 }
@@ -4776,7 +4785,7 @@ static void stl_sc26198otherisr(struct stlport *portp, unsigned int iack)
  */
 static int __init stallion_module_init(void)
 {
-       unsigned int i;
+       unsigned int i, retval;
 
        printk(KERN_INFO "%s: version %s\n", stl_drvtitle, stl_drvversion);
 
@@ -4785,6 +4794,10 @@ static int __init stallion_module_init(void)
 
        stl_initbrds();
 
+       retval = pci_register_driver(&stl_pcidriver);
+       if (retval)
+               goto err;
+
        stl_serial = alloc_tty_driver(STL_MAXBRDS * STL_MAXPORTS);
        if (!stl_serial)
                return -1;
@@ -4820,14 +4833,14 @@ static int __init stallion_module_init(void)
        }
 
        return 0;
+err:
+       return retval;
 }
 
 static void __exit stallion_module_exit(void)
 {
        struct stlbrd   *brdp;
-       struct stlpanel *panelp;
-       struct stlport  *portp;
-       int             i, j, k;
+       int             i;
 
        pr_debug("cleanup_module()\n");
 
@@ -4854,27 +4867,15 @@ static void __exit stallion_module_exit(void)
                        "errno=%d\n", -i);
        class_destroy(stallion_class);
 
+       pci_unregister_driver(&stl_pcidriver);
+
        for (i = 0; (i < stl_nrbrds); i++) {
                if ((brdp = stl_brds[i]) == NULL)
                        continue;
 
                free_irq(brdp->irq, brdp);
 
-               for (j = 0; (j < STL_MAXPANELS); j++) {
-                       panelp = brdp->panels[j];
-                       if (panelp == NULL)
-                               continue;
-                       for (k = 0; (k < STL_PORTSPERPANEL); k++) {
-                               portp = panelp->ports[k];
-                               if (portp == NULL)
-                                       continue;
-                               if (portp->tty != NULL)
-                                       stl_hangup(portp->tty);
-                               kfree(portp->tx.buf);
-                               kfree(portp);
-                       }
-                       kfree(panelp);
-               }
+               stl_cleanup_panels(brdp);
 
                release_region(brdp->ioaddr1, brdp->iosize1);
                if (brdp->iosize2 > 0)