linux-kernel - [PATCH] plan-b: Switch to refcounting PCI API

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Message-ID: <20070423150319.5b685e7e@the-village.bc.nu>
Date:	Mon, 23 Apr 2007 15:03:19 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	video4linux-list@...hat.com, linux-kernel@...r.kernel.org
Subject: [PATCH] plan-b: Switch to refcounting PCI API

Signed-off-by: Alan Cox <alan@...hat.com>

diff -u --new-file --recursive --exclude-from /usr/src/exclude linux.vanilla-2.6.21-rc6-mm1/drivers/media/video/planb.c linux-2.6.21-rc6-mm1/drivers/media/video/planb.c
--- linux.vanilla-2.6.21-rc6-mm1/drivers/media/video/planb.c	2007-04-12 13:40:33.000000000 +0100
+++ linux-2.6.21-rc6-mm1/drivers/media/video/planb.c	2007-04-23 12:00:54.286385088 +0100
@@ -2207,7 +2207,7 @@
 		"membase 0x%x (base reg. 0x%x)\n",
 		bus, PCI_SLOT(dev_fn), PCI_FUNC(dev_fn), old_base, confreg);
 
-	pdev = pci_find_slot (bus, dev_fn);
+	pdev = pci_get_bus_and_slot(bus, dev_fn);
 	if (!pdev) {
 		printk(KERN_ERR "planb: cannot find slot\n");
 		goto err_out;
@@ -2237,6 +2237,7 @@
 	pb->planb_base = planb_regs;
 	pb->planb_base_phys = (struct planb_registers *)new_base;
 	pb->irq	= irq;
+	pb->dev = pdev;
 
 	return planb_num;
 
@@ -2244,6 +2245,7 @@
 	pci_disable_device(pdev);
 err_out:
 	/* FIXME handle error */   /* comment moved from pci_find_slot, above */
+	pci_dev_put(pdev);
 	return 0;
 }
 
@@ -2270,6 +2272,8 @@
 
 		printk(KERN_INFO "PlanB: unregistering with v4l\n");
 		video_unregister_device(&pb->video_dev);
+		
+		pci_dev_put(pb->dev);
 
 		/* note that iounmap() does nothing on the PPC right now */
 		iounmap ((void *)pb->planb_base);
-
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