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-rw-r--r--linux-core/drm_auth.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/linux-core/drm_auth.c b/linux-core/drm_auth.c
index b6a3cba3..a6f74209 100644
--- a/linux-core/drm_auth.c
+++ b/linux-core/drm_auth.c
@@ -140,6 +140,9 @@ int drm_getmagic(struct inode *inode, struct file *filp,
unsigned int cmd, unsigned long arg)
{
static drm_magic_t sequence = 0;
+#ifndef DEFINE_SPINLOCK
+#define DEFINE_SPINLOCK(x) spinlock_t x = SPIN_LOCK_UNLOCKED
+#endif
static DEFINE_SPINLOCK(lock);
drm_file_t *priv = filp->private_data;
drm_device_t *dev = priv->head->dev;