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authorVitaly Kuznetsov <vkuznets@redhat.com>2015-04-11 18:07:50 -0700
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2015-05-24 12:17:41 -0700
commit3f0dccf86cab38d96b67efdfc944954f5490d057 (patch)
tree9316e36f19dc55631308b3dc04cc869ad8ac3a90
parent4c93ccccf47e32d605b81207eb575cce3b12facc (diff)
downloadlinux-linaro-stable-3f0dccf86cab38d96b67efdfc944954f5490d057.tar.gz
Drivers: hv: fcopy: set .owner reference for file operations
Get an additional reference otherwise a crash is observed when hv_utils module is being unloaded while fcopy daemon is still running. .owner gives us an additional reference when someone holds a descriptor for the device. Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com> Tested-by: Alex Ng <alexng@microsoft.com> Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--drivers/hv/hv_fcopy.c6
1 files changed, 2 insertions, 4 deletions
diff --git a/drivers/hv/hv_fcopy.c b/drivers/hv/hv_fcopy.c
index a501301e5b88..d1475e6aa9ac 100644
--- a/drivers/hv/hv_fcopy.c
+++ b/drivers/hv/hv_fcopy.c
@@ -360,12 +360,9 @@ static int fcopy_open(struct inode *inode, struct file *f)
}
/* XXX: there are still some tricky corner cases, e.g.,
- * 1) In a SMP guest, when fcopy_release() runs between
+ * In an SMP guest, when fcopy_release() runs between
* schedule_delayed_work() and fcopy_send_data(), there is
* still a chance an obsolete message will be queued.
- *
- * 2) When the fcopy daemon is running, if we unload the driver,
- * we'll notice a kernel oops when we kill the daemon later.
*/
static int fcopy_release(struct inode *inode, struct file *f)
{
@@ -385,6 +382,7 @@ static int fcopy_release(struct inode *inode, struct file *f)
static const struct file_operations fcopy_fops = {
+ .owner = THIS_MODULE,
.read = fcopy_read,
.write = fcopy_write,
.release = fcopy_release,