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authorroot <root@artemis.panaceas.org>2015-12-25 15:00:15 +0000
committerroot <root@artemis.panaceas.org>2015-12-25 15:00:15 +0000
commitddd86436f4e3643c04b797f858dab95d5f2e4de9 (patch)
treebfe7a780cf9a2f4fc33aec32c82e625e79dece1f /backport-include/linux/err.h
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Diffstat (limited to 'backport-include/linux/err.h')
-rw-r--r--backport-include/linux/err.h26
1 files changed, 26 insertions, 0 deletions
diff --git a/backport-include/linux/err.h b/backport-include/linux/err.h
new file mode 100644
index 0000000..f62e3bf
--- /dev/null
+++ b/backport-include/linux/err.h
@@ -0,0 +1,26 @@
+#ifndef __BACKPORT_LINUX_ERR_H
+#define __BACKPORT_LINUX_ERR_H
+#include_next <linux/err.h>
+#include <linux/version.h>
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,39)
+static inline int __must_check PTR_RET(const void *ptr)
+{
+ if (IS_ERR(ptr))
+ return PTR_ERR(ptr);
+ else
+ return 0;
+}
+#endif
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,33)
+/* mask IS_ERR_OR_NULL as debian squeeze also backports this */
+#define IS_ERR_OR_NULL LINUX_BACKPORT(IS_ERR_OR_NULL)
+
+static inline long __must_check IS_ERR_OR_NULL(const void *ptr)
+{
+ return !ptr || IS_ERR_VALUE((unsigned long)ptr);
+}
+#endif
+
+#endif /* __BACKPORT_LINUX_ERR_H */