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authorBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2008-07-05 20:30:51 +0200
committerBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2008-07-05 20:30:51 +0200
commit7cd95f56cb61f5348d062527c9d3653196f6e629 (patch)
tree8b26646d5add5812c06605cee0ecf5e4c0dc6e5a
parentb8a0b6ccf2ba2519ace65d782b41ee91bf3c3778 (diff)
downloadop-kernel-dev-7cd95f56cb61f5348d062527c9d3653196f6e629.zip
op-kernel-dev-7cd95f56cb61f5348d062527c9d3653196f6e629.tar.gz
ide: fix hwif->gendev refcounting
class->dev_release is called by device_release() iff dev->release is not present so ide_port_class_release() is never called and the last hwif->gendev reference is not dropped. Fix it by removing ide_port_class_release() and get_device() call from ide_register_port() (device_create_drvdata() takes a hwif->gendev reference anyway). This patch fixes hang on wait_for_completion(&hwif->gendev_rel_comp) in ide_unregister() reported by Pavel Machek. Cc: Pavel Machek <pavel@suse.cz> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Cc: Greg KH <greg@kroah.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
-rw-r--r--drivers/ide/ide-probe.c2
-rw-r--r--drivers/ide/ide.c8
2 files changed, 0 insertions, 10 deletions
diff --git a/drivers/ide/ide-probe.c b/drivers/ide/ide-probe.c
index 380fa0c..d27061b 100644
--- a/drivers/ide/ide-probe.c
+++ b/drivers/ide/ide-probe.c
@@ -646,8 +646,6 @@ static int ide_register_port(ide_hwif_t *hwif)
goto out;
}
- get_device(&hwif->gendev);
-
hwif->portdev = device_create_drvdata(ide_port_class, &hwif->gendev,
MKDEV(0, 0), hwif, hwif->name);
if (IS_ERR(hwif->portdev)) {
diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c
index c758dcb..2460777 100644
--- a/drivers/ide/ide.c
+++ b/drivers/ide/ide.c
@@ -1094,13 +1094,6 @@ struct bus_type ide_bus_type = {
EXPORT_SYMBOL_GPL(ide_bus_type);
-static void ide_port_class_release(struct device *portdev)
-{
- ide_hwif_t *hwif = dev_get_drvdata(portdev);
-
- put_device(&hwif->gendev);
-}
-
int ide_vlb_clk;
EXPORT_SYMBOL_GPL(ide_vlb_clk);
@@ -1305,7 +1298,6 @@ static int __init ide_init(void)
ret = PTR_ERR(ide_port_class);
goto out_port_class;
}
- ide_port_class->dev_release = ide_port_class_release;
init_ide_data();
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