From: Michael Zaidman <michael.zaidman@gmail.com>
To: lkp@intel.com
Cc: kbuild-all@lists.01.org, clang-built-linux@googlegroups.com,
linux-kernel@vger.kernel.org, jikos@kernel.org, joe@perches.com,
dan.carpenter@oracle.com, linux-input@vger.kernel.org,
Michael Zaidman <michael.zaidman@gmail.com>
Subject: [PATCH v3] HID: ft260: fix format type warning in ft260_word_show()
Date: Mon, 10 May 2021 19:34:28 +0300 [thread overview]
Message-ID: <20210510163428.2415-1-michael.zaidman@gmail.com> (raw)
In-Reply-To: <202105060637.LeEC6ztp-lkp@intel.com>
Fixes: 6a82582d9fa4 ("HID: ft260: add usb hid to i2c host bridge driver")
Fix warning reported by static analysis when built with W=1 for arm64 by
clang version 13.0.0
>> drivers/hid/hid-ft260.c:794:44: warning: format specifies type 'short' but
the argument has type 'int' [-Wformat]
return scnprintf(buf, PAGE_SIZE, "%hi\n", le16_to_cpu(*field));
~~~ ^~~~~~~~~~~~~~~~~~~
%i
include/linux/byteorder/generic.h:91:21: note: expanded from
macro 'le16_to_cpu'
#define le16_to_cpu __le16_to_cpu
^
include/uapi/linux/byteorder/big_endian.h:36:26: note: expanded from
macro '__le16_to_cpu'
#define __le16_to_cpu(x) __swab16((__force __u16)(__le16)(x))
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/uapi/linux/swab.h:105:2: note: expanded from macro '__swab16'
(__builtin_constant_p((__u16)(x)) ? \
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Any sprintf style use of %h or %hi for a sub-int sized value isn't useful
since integer promotion is done on the value anyway. So, use %d instead.
https://lore.kernel.org/lkml/CAHk-=wgoxnmsj8GEVFJSvTwdnWm8wVJthefNk2n6+4TC=20e0Q@mail.gmail.com/
Signed-off-by: Michael Zaidman <michael.zaidman@gmail.com>
Suggested-by: Joe Perches <joe@perches.com>
Reported-by: kernel test robot <lkp@intel.com>
---
drivers/hid/hid-ft260.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/hid/hid-ft260.c b/drivers/hid/hid-ft260.c
index 047aa85a7c83..ff2a49b5cac5 100644
--- a/drivers/hid/hid-ft260.c
+++ b/drivers/hid/hid-ft260.c
@@ -779,7 +779,7 @@ static int ft260_byte_show(struct hid_device *hdev, int id, u8 *cfg, int len,
if (ret != len && ret >= 0)
return -EIO;
- return scnprintf(buf, PAGE_SIZE, "%hi\n", *field);
+ return scnprintf(buf, PAGE_SIZE, "%d\n", *field);
}
static int ft260_word_show(struct hid_device *hdev, int id, u8 *cfg, int len,
@@ -791,7 +791,7 @@ static int ft260_word_show(struct hid_device *hdev, int id, u8 *cfg, int len,
if (ret != len && ret >= 0)
return -EIO;
- return scnprintf(buf, PAGE_SIZE, "%hi\n", le16_to_cpu(*field));
+ return scnprintf(buf, PAGE_SIZE, "%d\n", le16_to_cpu(*field));
}
#define FT260_ATTR_SHOW(name, reptype, id, type, func) \
--
2.25.1
prev parent reply other threads:[~2021-05-10 16:35 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-05 22:47 drivers/hid/hid-ft260.c:794:44: warning: format specifies type 'short' but the argument has type 'int' kernel test robot
2021-05-06 11:55 ` Michael Zaidman
2021-05-07 10:00 ` [kbuild-all] " Chen, Rong A
2021-05-09 18:25 ` Michael Zaidman
2021-05-09 19:32 ` [PATCH] HID: ft260: fix format type warning in ft260_word_show() Michael Zaidman
2021-05-09 20:39 ` Joe Perches
2021-05-10 9:17 ` Michael Zaidman
2021-05-10 9:52 ` Joe Perches
2021-05-10 10:15 ` Dan Carpenter
2021-05-10 10:22 ` Dan Carpenter
2021-05-10 12:51 ` Michael Zaidman
2021-05-10 16:30 ` [PATCH v2] " Michael Zaidman
2021-05-10 16:41 ` Joe Perches
2021-05-10 16:34 ` Michael Zaidman [this message]
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