linux-kernel - [PATCH v2 08/13] partitions: msdos: fix one-byte get

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Message-Id: <20210514100106.3404011-9-arnd@kernel.org>
Date:   Fri, 14 May 2021 12:00:56 +0200
From:   Arnd Bergmann <arnd@...nel.org>
To:     linux-arch@...r.kernel.org
Cc:     Linus Torvalds <torvalds@...ux-foundation.org>,
        Vineet Gupta <vgupta@...opsys.com>,
        Arnd Bergmann <arnd@...db.de>,
        "Richard Russon (FlatCap)" <ldm@...tcap.org>,
        Jens Axboe <axboe@...nel.dk>,
        linux-ntfs-dev@...ts.sourceforge.net, linux-block@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH v2 08/13] partitions: msdos: fix one-byte get_unaligned()

From: Arnd Bergmann <arnd@...db.de>

A simplification of get_unaligned() clashes with callers that pass
in a character pointer, causing a harmless warning like:

block/partitions/msdos.c: In function 'msdos_partition':
include/asm-generic/unaligned.h:13:22: warning: 'packed' attribute ignored for field of type 'u8' {aka 'unsigned char'} [-Wattributes]

Remove the get_unaligned() call and just use the byte directly.

Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 block/partitions/ldm.h   | 2 +-
 block/partitions/msdos.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/block/partitions/ldm.h b/block/partitions/ldm.h
index d8d6beaa72c4..1a77ff09cc5f 100644
--- a/block/partitions/ldm.h
+++ b/block/partitions/ldm.h
@@ -85,7 +85,7 @@ struct parsed_partitions;
 #define TOC_BITMAP2		"log"		/* bitmaps in the TOCBLOCK. */
 
 /* Borrowed from msdos.c */
-#define SYS_IND(p)		(get_unaligned(&(p)->sys_ind))
+#define SYS_IND(p)		((p)->sys_ind)
 
 struct frag {				/* VBLK Fragment handling */
 	struct list_head list;
diff --git a/block/partitions/msdos.c b/block/partitions/msdos.c
index 8f2fcc080264..d78549d7619d 100644
--- a/block/partitions/msdos.c
+++ b/block/partitions/msdos.c
@@ -38,7 +38,7 @@
  */
 #include <asm/unaligned.h>
 
-#define SYS_IND(p)	get_unaligned(&p->sys_ind)
+#define SYS_IND(p)	(p->sys_ind)
 
 static inline sector_t nr_sects(struct msdos_partition *p)
 {
-- 
2.29.2