V4L/DVB (4707): 4linux: complete conversion to hotplug safe PCI API

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

2 files changed, 18 insertions, 13 deletions

diff --git a/drivers/media/video/zoran_card.c b/drivers/media/video/zoran_card.c
index 9f21d0ba0f0..653822ce391 100644
--- a/drivers/media/video/zoran_card.c
+++ b/drivers/media/video/zoran_card.c
@@ -1278,9 +1278,7 @@ find_zr36057 (void)
 
         zoran_num = 0;
         while (zoran_num < BUZ_MAX &&
-               (dev =
-                pci_find_device(PCI_VENDOR_ID_ZORAN,
-                                PCI_DEVICE_ID_ZORAN_36057, dev)) != NULL) {
+               (dev = pci_get_device(PCI_VENDOR_ID_ZORAN, PCI_DEVICE_ID_ZORAN_36057, dev)) != NULL) {
                 card_num = card[zoran_num];
                 zr = &zoran[zoran_num];
                 memset(zr, 0, sizeof(struct zoran));    // Just in case if previous cycle failed
@@ -1541,7 +1539,8 @@ find_zr36057 (void)
                                 goto zr_detach_vfe;
                         }
                 }
-
+                /* Success so keep the pci_dev referenced */
+                pci_dev_get(zr->pci_dev);
                 zoran_num++;
                 continue;
 
@@ -1563,6 +1562,9 @@ find_zr36057 (void)
                 iounmap(zr->zr36057_mem);
                 continue;
         }
+        if (dev)        /* Clean up ref count on early exit */
+                pci_dev_put(dev);
+
         if (zoran_num == 0) {
                 dprintk(1, KERN_INFO "No known MJPEG cards found.\n");
         }
diff --git a/drivers/media/video/zr36120.c b/drivers/media/video/zr36120.c
index 9240638a013..b5ffe53c40d 100644
--- a/drivers/media/video/zr36120.c
+++ b/drivers/media/video/zr36120.c
@@ -1840,16 +1840,16 @@ int __init find_zoran(void)
         struct zoran *ztv;
         struct pci_dev *dev = NULL;
         unsigned char revision;
-        int zoran_num=0;
+        int zoran_num = 0;
 
-        while ((dev = pci_find_device(PCI_VENDOR_ID_ZORAN,PCI_DEVICE_ID_ZORAN_36120, dev)))
+        while ((dev = pci_get_device(PCI_VENDOR_ID_ZORAN,PCI_DEVICE_ID_ZORAN_36120, dev)))
         {
                 /* Ok, a ZR36120/ZR36125 found! */
                 ztv = &zorans[zoran_num];
                 ztv->dev = dev;
 
                 if (pci_enable_device(dev))
-                        return -EIO;
+                        continue;
 
                 pci_read_config_byte(dev, PCI_CLASS_REVISION, &revision);
                 printk(KERN_INFO "zoran: Zoran %x (rev %d) ",
@@ -1867,17 +1867,18 @@ int __init find_zoran(void)
                 {
                         iounmap(ztv->zoran_mem);
                         printk(KERN_ERR "zoran: Bad irq number or handler\n");
-                        return -EINVAL;
+                        continue;
                 }
                 if (result==-EBUSY)
                         printk(KERN_ERR "zoran: IRQ %d busy, change your PnP config in BIOS\n",dev->irq);
                 if (result < 0) {
                         iounmap(ztv->zoran_mem);
-                        return result;
+                        continue;
                 }
                 /* Enable bus-mastering */
                 pci_set_master(dev);
-
+                /* Keep a reference */
+                pci_dev_get(dev);
                 zoran_num++;
         }
         if(zoran_num)
@@ -2041,6 +2042,9 @@ void release_zoran(int max)
                 if (ztv->zoran_mem)
                         iounmap(ztv->zoran_mem);
 
+                /* Drop PCI device */
+                pci_dev_put(ztv->dev);
+
                 video_unregister_device(&ztv->video_dev);
                 video_unregister_device(&ztv->vbi_dev);
         }
@@ -2057,13 +2061,12 @@ int __init zr36120_init(void)
 
         handle_chipset();
         zoran_cards = find_zoran();
-        if (zoran_cards<0)
-                /* no cards found, no need for a driver */
+        if (zoran_cards <= 0)
                 return -EIO;
 
         /* initialize Zorans */
         for (card=0; card<zoran_cards; card++) {
-                if (init_zoran(card)<0) {
+                if (init_zoran(card) < 0) {
                         /* only release the zorans we have registered */
                         release_zoran(card);
                         return -EIO;