Backports v5.4.27

Backports generated by toradex backports f6e8852f1ef28e6d3c9bae8400eb6a87a6b0c3e7
against mainline kernel tag v5.4.27

Signed-off-by: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>

1 files changed, 27 insertions, 0 deletions

diff --git a/backport-include/linux/bitops.h b/backport-include/linux/bitops.h
new file mode 100644
index 0000000..17bd813
--- /dev/null
+++ b/backport-include/linux/bitops.h
@@ -0,0 +1,27 @@
+#ifndef __BACKPORT_BITOPS_H
+#define __BACKPORT_BITOPS_H
+#include_next <linux/bitops.h>
+#include <linux/version.h>
+#include <generated/utsrelease.h>
+
+#ifndef GENMASK
+
+/*
+ * Create a contiguous bitmask starting at bit position @l and ending at
+ * position @h. For example
+ * GENMASK_ULL(39, 21) gives us the 64bit vector 0x000000ffffe00000.
+ */
+#define GENMASK(h, l)		(((U32_C(1) << ((h) - (l) + 1)) - 1) << (l))
+#define GENMASK_ULL(h, l)	(((U64_C(1) << ((h) - (l) + 1)) - 1) << (l))
+
+#endif
+
+#ifndef BIT_ULL
+#define BIT_ULL(nr) (1ULL << (nr))
+#endif
+
+#ifndef BITS_PER_TYPE
+#define BITS_PER_TYPE(type) (sizeof(type) * BITS_PER_BYTE)
+#endif
+
+#endif /* __BACKPORT_BITOPS_H */