[PATCH v1 1/1] include/linux/unaligned: Replace kernel.h with the necessary inclusions

When kernel.h is used in the headers it adds a lot into dependency hell,
especially when there are circular dependencies are involved.

Replace kernel.h inclusion with the list of what is really being used.

The rest of the changes are induced by the above and may not be split.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/net/wireless/broadcom/brcm80211/brcmfmac/xtlv.c | 2 ++
 include/linux/unaligned/packed_struct.h                 | 2 +-
 lib/lz4/lz4defs.h                                       | 2 ++
 3 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/xtlv.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/xtlv.c
index 2f3c451148db..2f8908074303 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/xtlv.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/xtlv.c

@@ -4,6 +4,8 @@
  */
 
 #include <asm/unaligned.h>
+
+#include <linux/math.h>
 #include <linux/string.h>
 #include <linux/bug.h>
 

diff --git a/include/linux/unaligned/packed_struct.h b/include/linux/unaligned/packed_struct.h
index c0d817de4df2..f4c8eaf4d012 100644
--- a/include/linux/unaligned/packed_struct.h
+++ b/include/linux/unaligned/packed_struct.h

@@ -1,7 +1,7 @@
 #ifndef _LINUX_UNALIGNED_PACKED_STRUCT_H
 #define _LINUX_UNALIGNED_PACKED_STRUCT_H
 
-#include <linux/kernel.h>
+#include <linux/types.h>
 
 struct __una_u16 { u16 x; } __packed;
 struct __una_u32 { u32 x; } __packed;

diff --git a/lib/lz4/lz4defs.h b/lib/lz4/lz4defs.h
index 673bd206aa98..330aa539b46e 100644
--- a/lib/lz4/lz4defs.h
+++ b/lib/lz4/lz4defs.h

@@ -36,6 +36,8 @@
  */
 
 #include <asm/unaligned.h>
+
+#include <linux/bitops.h>
 #include <linux/string.h>	 /* memset, memcpy */
 
 #define FORCE_INLINE __always_inline

-- 
2.33.0

On 12/9/2021 1:38 PM, Andy Shevchenko wrote:

When kernel.h is used in the headers it adds a lot into dependency hell,
especially when there are circular dependencies are involved.

Replace kernel.h inclusion with the list of what is really being used.

The rest of the changes are induced by the above and may not be split.

For brcmfmac change:

Acked-by: Arend van Spriel <arend.vanspriel@broadcom.com>

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
  drivers/net/wireless/broadcom/brcm80211/brcmfmac/xtlv.c | 2 ++
  include/linux/unaligned/packed_struct.h                 | 2 +-
  lib/lz4/lz4defs.h                                       | 2 ++
  3 files changed, 5 insertions(+), 1 deletion(-)