From 391f8bee7ef5a2e92d24d73f0072915b7cb12b6b Mon Sep 17 00:00:00 2001
From: Marcin Chrzanowski <marcin.j.chrzanowski@gmail.com>
Date: Thu, 3 May 2018 12:52:32 +0200
Subject: Create basic char device

---
 util.h | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 util.h

(limited to 'util.h')

diff --git a/util.h b/util.h
new file mode 100644
index 0000000..bd9bcc3
--- /dev/null
+++ b/util.h
@@ -0,0 +1,22 @@
+#ifndef UTIL_H
+#define UTIL_H
+
+#define ORFAIL(cond, label) \
+({ \
+	err = (cond); \
+	if (err < 0) { \
+		goto label; \
+	} \
+})
+
+#define ORFAIL_PTR(cond, lvalue, label) \
+({ \
+	lvalue = (cond); \
+	if (IS_ERR(lvalue)) { \
+		err = PTR_ERR(lvalue); \
+		goto label; \
+	} \
+})
+	
+
+#endif
-- 
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