mISDN: Create /sys/class/mISDN

Create /sys/class/mISDN and implement functions to handle
device renames.

Signed-Off-By: Matthias Urlichs <matthias@urlichs.de>
Signed-off-by: Karsten Keil <kkeil@suse.de>

1 files changed, 44 insertions, 56 deletions

diff --git a/drivers/isdn/hardware/mISDN/hfcpci.c b/drivers/isdn/hardware/mISDN/hfcpci.c
index cd5d26c9909..8df12bf02af 100644
--- a/drivers/isdn/hardware/mISDN/hfcpci.c
+++ b/drivers/isdn/hardware/mISDN/hfcpci.c
@@ -64,9 +64,6 @@ MODULE_LICENSE("GPL");
 module_param(debug, uint, 0);
 module_param(poll, uint, S_IRUGO | S_IWUSR);
 
-static LIST_HEAD(HFClist);
-static DEFINE_RWLOCK(HFClock);
-
 enum {
         HFC_CCD_2BD0,
         HFC_CCD_B000,
@@ -136,7 +133,6 @@ struct hfcPCI_hw {
 
 
 struct hfc_pci {
-        struct list_head        list;
         u_char                  subtype;
         u_char                  chanlimit;
         u_char                  initdone;
@@ -1227,41 +1223,6 @@ hfcpci_int(int intno, void *dev_id)
         return IRQ_HANDLED;
 }
 
-static void
-hfcpci_softirq(void *arg)
-{
-        u_long          flags;
-        struct bchannel *bch;
-        struct hfc_pci  *hc;
-
-        write_lock_irqsave(&HFClock, flags);
-        list_for_each_entry(hc, &HFClist, list) {
-                if (hc->hw.int_m2 & HFCPCI_IRQ_ENABLE) {
-                        spin_lock(&hc->lock);
-                        bch = Sel_BCS(hc, hc->hw.bswapped ? 2 : 1);
-                        if (bch && bch->state == ISDN_P_B_RAW) { /* B1 rx&tx */
-                                main_rec_hfcpci(bch);
-                                tx_birq(bch);
-                        }
-                        bch = Sel_BCS(hc, hc->hw.bswapped ? 1 : 2);
-                        if (bch && bch->state == ISDN_P_B_RAW) { /* B2 rx&tx */
-                                main_rec_hfcpci(bch);
-                                tx_birq(bch);
-                        }
-                        spin_unlock(&hc->lock);
-                }
-        }
-        write_unlock_irqrestore(&HFClock, flags);
-
-        /* if next event would be in the past ... */
-        if ((s32)(hfc_jiffies + tics - jiffies) <= 0)
-                hfc_jiffies = jiffies + 1;
-        else
-                hfc_jiffies += tics;
-        hfc_tl.expires = hfc_jiffies;
-        add_timer(&hfc_tl);
-}
-
 /*
  * timer callback for D-chan busy resolution. Currently no function
  */
@@ -2131,7 +2092,6 @@ release_card(struct hfc_pci *hc) {
         mISDN_freebchannel(&hc->bch[1]);
         mISDN_freebchannel(&hc->bch[0]);
         mISDN_freedchannel(&hc->dch);
-        list_del(&hc->list);
         pci_set_drvdata(hc->pdev, NULL);
         kfree(hc);
 }
@@ -2141,7 +2101,6 @@ setup_card(struct hfc_pci *card)
 {
         int             err = -EINVAL;
         u_int           i;
-        u_long          flags;
         char            name[MISDN_MAX_IDLEN];
 
         card->dch.debug = debug;
@@ -2169,13 +2128,10 @@ setup_card(struct hfc_pci *card)
         if (err)
                 goto error;
         snprintf(name, MISDN_MAX_IDLEN - 1, "hfc-pci.%d", HFC_cnt + 1);
-        err = mISDN_register_device(&card->dch.dev, name);
+        err = mISDN_register_device(&card->dch.dev, &card->pdev->dev, name);
         if (err)
                 goto error;
         HFC_cnt++;
-        write_lock_irqsave(&HFClock, flags);
-        list_add_tail(&card->list, &HFClist);
-        write_unlock_irqrestore(&HFClock, flags);
         printk(KERN_INFO "HFC %d cards installed\n", HFC_cnt);
         return 0;
 error:
@@ -2311,15 +2267,12 @@ static void __devexit
 hfc_remove_pci(struct pci_dev *pdev)
 {
         struct hfc_pci  *card = pci_get_drvdata(pdev);
-        u_long          flags;
 
-        if (card) {
-                write_lock_irqsave(&HFClock, flags);
+        if (card)
                 release_card(card);
-                write_unlock_irqrestore(&HFClock, flags);
-        } else
+        else
                 if (debug)
-                        printk(KERN_WARNING "%s: drvdata allready removed\n",
+                        printk(KERN_WARNING "%s: drvdata already removed\n",
                             __func__);
 }
 
@@ -2331,6 +2284,46 @@ static struct pci_driver hfc_driver = {
         .id_table = hfc_ids,
 };
 
+static int
+_hfcpci_softirq(struct device *dev, void *arg)
+{
+        struct hfc_pci  *hc = dev_get_drvdata(dev);
+        struct bchannel *bch;
+        if (hc == NULL)
+                return 0;
+
+        if (hc->hw.int_m2 & HFCPCI_IRQ_ENABLE) {
+                spin_lock(&hc->lock);
+                bch = Sel_BCS(hc, hc->hw.bswapped ? 2 : 1);
+                if (bch && bch->state == ISDN_P_B_RAW) { /* B1 rx&tx */
+                        main_rec_hfcpci(bch);
+                        tx_birq(bch);
+                }
+                bch = Sel_BCS(hc, hc->hw.bswapped ? 1 : 2);
+                if (bch && bch->state == ISDN_P_B_RAW) { /* B2 rx&tx */
+                        main_rec_hfcpci(bch);
+                        tx_birq(bch);
+                }
+                spin_unlock(&hc->lock);
+        }
+        return 0;
+}
+
+static void
+hfcpci_softirq(void *arg)
+{
+        (void) driver_for_each_device(&hfc_driver.driver, NULL, arg,
+                                        _hfcpci_softirq);
+
+        /* if next event would be in the past ... */
+        if ((s32)(hfc_jiffies + tics - jiffies) <= 0)
+                hfc_jiffies = jiffies + 1;
+        else
+                hfc_jiffies += tics;
+        hfc_tl.expires = hfc_jiffies;
+        add_timer(&hfc_tl);
+}
+
 static int __init
 HFC_init(void)
 {
@@ -2375,14 +2368,9 @@ HFC_init(void)
 static void __exit
 HFC_cleanup(void)
 {
-        struct hfc_pci  *card, *next;
-
         if (timer_pending(&hfc_tl))
                 del_timer(&hfc_tl);
 
-        list_for_each_entry_safe(card, next, &HFClist, list) {
-                release_card(card);
-        }
         pci_unregister_driver(&hfc_driver);
 }