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Date:   Tue, 15 Dec 2020 17:35:31 +0100
From:   "Enrico Weigelt, metux IT consult" <info@...ux.net>
To:     linux-kernel@...r.kernel.org
Cc:     linux-nvdimm@...ts.01.org
Subject: [PATCH] drivers: nvdimm: cleanup include of badblocks.h

* drivers/nvdimm/core.c doesn't use anything from badblocks.h on its own,
  thus including it isn't needed. There's indeed indirect use, via funcs
  in nd.h, but this one already includes badblocks.h.

* drivers/nvdimm/claim.c calls stuff from badblocks.h and therefore should
  include it on its own (instead of relying any other header doing that)

* drivers/nvdimm/btt.h doesn't really need anything from badblocks.h and
  can easily live with a forward declaration of struct badblocks (just having
  pointers to it, but not dereferencing it anywhere)

Signed-off-by: Enrico Weigelt, metux IT consult <info@...ux.net>
---
 drivers/nvdimm/btt.h   | 3 ++-
 drivers/nvdimm/claim.c | 1 +
 drivers/nvdimm/core.c  | 1 -
 3 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/nvdimm/btt.h b/drivers/nvdimm/btt.h
index 2e258bee7db2..aa53e0b769bd 100644
--- a/drivers/nvdimm/btt.h
+++ b/drivers/nvdimm/btt.h
@@ -7,7 +7,6 @@
 #ifndef _LINUX_BTT_H
 #define _LINUX_BTT_H
 
-#include <linux/badblocks.h>
 #include <linux/types.h>
 
 #define BTT_SIG_LEN 16
@@ -197,6 +196,8 @@ struct arena_info {
 	int log_index[2];
 };
 
+struct badblocks;
+
 /**
  * struct btt - handle for a BTT instance
  * @btt_disk:		Pointer to the gendisk for BTT device
diff --git a/drivers/nvdimm/claim.c b/drivers/nvdimm/claim.c
index 5a7c80053c62..030dbde6b088 100644
--- a/drivers/nvdimm/claim.c
+++ b/drivers/nvdimm/claim.c
@@ -4,6 +4,7 @@
  */
 #include <linux/device.h>
 #include <linux/sizes.h>
+#include <linux/badblocks.h>
 #include "nd-core.h"
 #include "pmem.h"
 #include "pfn.h"
diff --git a/drivers/nvdimm/core.c b/drivers/nvdimm/core.c
index c21ba0602029..7de592d7eff4 100644
--- a/drivers/nvdimm/core.c
+++ b/drivers/nvdimm/core.c
@@ -3,7 +3,6 @@
  * Copyright(c) 2013-2015 Intel Corporation. All rights reserved.
  */
 #include <linux/libnvdimm.h>
-#include <linux/badblocks.h>
 #include <linux/suspend.h>
 #include <linux/export.h>
 #include <linux/module.h>
-- 
2.11.0

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