From: Arnd Bergmann <arnd@kernel.org>
To: linux-arch@vger.kernel.org
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
Vineet Gupta <vgupta@synopsys.com>, Arnd Bergmann <arnd@arndb.de>,
"Richard Russon (FlatCap)" <ldm@flatcap.org>,
Jens Axboe <axboe@kernel.dk>,
linux-ntfs-dev@lists.sourceforge.net,
linux-block@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [RFC 08/12] partitions: msdos: fix one-byte get_unaligned()
Date: Sat, 8 May 2021 00:07:53 +0200 [thread overview]
Message-ID: <20210507220813.365382-9-arnd@kernel.org> (raw)
In-Reply-To: <20210507220813.365382-1-arnd@kernel.org>
From: Arnd Bergmann <arnd@arndb.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@arndb.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
next prev parent reply other threads:[~2021-05-07 22:11 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-07 22:07 [RFC 0/12] Unify asm/unaligned.h around struct helper Arnd Bergmann
2021-05-07 22:07 ` [RFC 01/12] asm-generic: use asm-generic/unaligned.h for most architectures Arnd Bergmann
2021-05-07 23:02 ` Thomas Gleixner
2021-05-10 10:16 ` Geert Uytterhoeven
2021-05-10 13:12 ` Arnd Bergmann
2021-05-07 22:07 ` [RFC 02/12] openrisc: always use unaligned-struct header Arnd Bergmann
2021-05-07 23:02 ` Stafford Horne
2021-05-08 11:42 ` David Laight
2021-05-07 22:07 ` [RFC 03/12] sh: remove unaligned access for sh4a Arnd Bergmann
2021-05-10 21:11 ` Rob Landley
2021-05-07 22:07 ` [RFC 04/12] m68k: select CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS Arnd Bergmann
2021-05-10 10:18 ` Geert Uytterhoeven
2021-05-07 22:07 ` [RFC 05/12] powerpc: use linux/unaligned/le_struct.h on LE power7 Arnd Bergmann
2021-05-07 22:07 ` [RFC 06/12] asm-generic: unaligned: remove byteshift helpers Arnd Bergmann
2021-05-08 11:38 ` Arnd Bergmann
2021-05-07 22:07 ` [RFC 07/12] asm-generic: unaligned always use struct helpers Arnd Bergmann
2021-05-07 22:07 ` Arnd Bergmann [this message]
2021-05-07 22:07 ` [RFC 09/12] apparmor: use get_unaligned() only for multi-byte words Arnd Bergmann
2021-05-10 8:17 ` John Johansen
2021-05-07 22:07 ` [RFC 10/12] mwifiex: re-fix for unaligned accesses Arnd Bergmann
2021-05-07 22:07 ` [RFC 11/12] netpoll: avoid put_unaligned() on single character Arnd Bergmann
2021-05-07 22:07 ` [RFC 12/12] asm-generic: simplify asm/unaligned.h Arnd Bergmann
2021-05-07 23:54 ` Linus Torvalds
2021-05-08 9:28 ` Arnd Bergmann
2021-05-08 15:23 ` Linus Torvalds
2021-05-08 11:03 ` David Laight
2021-05-08 14:18 ` David Laight
2021-05-10 6:39 ` Geert Uytterhoeven
2021-05-07 22:07 ` [RFC 0/12] Unify asm/unaligned.h around struct helper Arnd Bergmann
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