kernel: fix cryptodev with kernel >= 2.6.35

The fix is from http://sourceforge.net/mailarchive/forum.php?thread_name=20100906035717.GA7562%40mcafee.com&forum_name=ocf-linux-users

Thank you tripolar for reporting the issue and finding a solution for it.

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@24286 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/target/linux/generic/files/crypto/ocf/cryptodev.c b/target/linux/generic/files/crypto/ocf/cryptodev.c
index c1e9140..f7ce06b 100644 (file)
--- a/target/linux/generic/files/crypto/ocf/cryptodev.c
+++ b/target/linux/generic/files/crypto/ocf/cryptodev.c
@@ -977,10 +977,16 @@ cryptodev_open(struct inode *inode, struct file *filp)
        struct fcrypt *fcr;
 
        dprintk("%s()\n", __FUNCTION__);
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,35)
+       /*
+        * on 2.6.35 private_data points to a miscdevice structure, we override
+        * it,  which is currently safe to do.
+        */
        if (filp->private_data) {
-               printk("cryptodev: Private data already exists !\n");
-               return(0);
+               printk("cryptodev: Private data already exists - %p!\n", filp->private_data);
+               return(-ENODEV);
        }
+#endif
 
        fcr = kmalloc(sizeof(*fcr), GFP_KERNEL);
        if (!fcr) {