[PATCH] mxser: PCI refcounts

[Alan Cox <alan@lxorguk.ukuu.org.uk>]

Switch to pci ref counts for mxser when handling PCI devices. Use
pci_get_device and drop the reference when we finish and unload.

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

diff -u --new-file --recursive --exclude-from /usr/src/exclude linux.vanilla-2.6.18-rc6-mm1/drivers/char/mxser.c linux-2.6.18-rc6-mm1/drivers/char/mxser.c
--- linux.vanilla-2.6.18-rc6-mm1/drivers/char/mxser.c	2006-09-11 17:00:09.000000000 +0100
+++ linux-2.6.18-rc6-mm1/drivers/char/mxser.c	2006-09-14 16:14:52.000000000 +0100
@@ -538,6 +538,7 @@
 			if (pdev != NULL) {	/* PCI */
 				release_region(pci_resource_start(pdev, 2), pci_resource_len(pdev, 2));
 				release_region(pci_resource_start(pdev, 3), pci_resource_len(pdev, 3));
+				pci_dev_put(pdev);
 			} else {
 				release_region(mxsercfg[i].ioaddr[0], 8 * mxsercfg[i].ports);
 				release_region(mxsercfg[i].vector, 1);
@@ -862,9 +865,9 @@
 	index = 0;
 	b = 0;
 	while (b < n) {
-		pdev = pci_find_device(mxser_pcibrds[b].vendor,
+		pdev = pci_get_device(mxser_pcibrds[b].vendor,
 				mxser_pcibrds[b].device, pdev);
-			if (pdev == NULL) {
+		if (pdev == NULL) {
 			b++;
 			continue;
 		}
@@ -916,6 +919,9 @@
 			if (mxser_initbrd(m, &hwconf) < 0)
 				continue;
 			m++;
+			/* Keep an extra reference if we succeeded. It will
+			   be returned at unload time */
+			pci_dev_get(pdev);
 		}
 	}
 #endif