[PATCH] mxser: PCI refcounts

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>
Cc: Greg KH <greg@kroah.com>
Cc: <jirislaby@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 6 insertions, 2 deletions

diff --git a/drivers/char/mxser.c b/drivers/char/mxser.c
index 4204746f1590..2dc49be144e6 100644
--- a/drivers/char/mxser.c
+++ b/drivers/char/mxser.c
@@ -515,6 +515,7 @@ static void __exit mxser_module_exit(void)
                         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);
@@ -839,9 +840,9 @@ static int mxser_init(void)
         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;
                 }
@@ -893,6 +894,9 @@ static int mxser_init(void)
                         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