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[Qemu-devel] [PULL 01/34] block: Constify data passed by pointer to blk_

From: Kevin Wolf
Subject: [Qemu-devel] [PULL 01/34] block: Constify data passed by pointer to blk_name
Date: Fri, 28 Apr 2017 22:33:09 +0200

From: Krzysztof Kozlowski <address@hidden>

blk_name() is not modifying data passed to it through pointer and it
returns also a pointer to const so the argument can be made const for
code safeness.

Signed-off-by: Krzysztof Kozlowski <address@hidden>
Reviewed-by: Philippe Mathieu-Daudé <address@hidden>
Signed-off-by: Kevin Wolf <address@hidden>
 block/block-backend.c          | 2 +-
 include/sysemu/block-backend.h | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/block/block-backend.c b/block/block-backend.c
index 7405024..ae3d771 100644
--- a/block/block-backend.c
+++ b/block/block-backend.c
@@ -420,7 +420,7 @@ void monitor_remove_blk(BlockBackend *blk)
  * Return @blk's name, a non-null string.
  * Returns an empty string iff @blk is not referenced by the monitor.
-const char *blk_name(BlockBackend *blk)
+const char *blk_name(const BlockBackend *blk)
     return blk->name ?: "";
diff --git a/include/sysemu/block-backend.h b/include/sysemu/block-backend.h
index 7462228..133e542 100644
--- a/include/sysemu/block-backend.h
+++ b/include/sysemu/block-backend.h
@@ -99,7 +99,7 @@ int blk_get_refcnt(BlockBackend *blk);
 void blk_ref(BlockBackend *blk);
 void blk_unref(BlockBackend *blk);
 void blk_remove_all_bs(void);
-const char *blk_name(BlockBackend *blk);
+const char *blk_name(const BlockBackend *blk);
 BlockBackend *blk_by_name(const char *name);
 BlockBackend *blk_next(BlockBackend *blk);
 bool monitor_add_blk(BlockBackend *blk, const char *name, Error **errp);

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