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, 22 insertions, 0 deletions

diff --git a/backport-include/linux/io.h b/backport-include/linux/io.h
new file mode 100644
index 0000000..e04305c
--- /dev/null
+++ b/backport-include/linux/io.h
@@ -0,0 +1,22 @@
+#ifndef __BP_LINUX_IO_H
+#define __BP_LINUX_IO_H
+#include_next <linux/io.h>
+
+#ifndef IOMEM_ERR_PTR
+#define IOMEM_ERR_PTR(err) (__force void __iomem *)ERR_PTR(err)
+#endif
+
+#if LINUX_VERSION_IS_LESS(4,5,0)
+#define __ioread32_copy LINUX_BACKPORT(__ioread32_copy)
+void __ioread32_copy(void *to, const void __iomem *from, size_t count);
+#endif
+
+#ifndef writel_relaxed
+#define writel_relaxed writel_relaxed
+static inline void writel_relaxed(u32 value, volatile void __iomem *addr)
+{
+	__raw_writel(__cpu_to_le32(value), addr);
+}
+#endif
+
+#endif /* __BP_LINUX_IO_H */