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Date: Mon, 20 Dec 2021 13:25:03 +0100
From: Anders Roxell <anders.roxell@...aro.org>
To: stable@...r.kernel.org
Cc: linux-kernel@...r.kernel.org, woojung.huh@...rochip.com,
UNGLinuxDriver@...rochip.com, davem@...emloft.net,
netdev@...r.kernel.org, linux-usb@...r.kernel.org,
clang-built-linux@...glegroups.com, ulli.kroll@...glemail.com,
linux@...linux.org.uk, linux-arm-kernel@...ts.infradead.org,
amitkarwar@...il.com, nishants@...vell.com, gbhat@...vell.com,
huxinming820@...il.com, kvalo@...eaurora.org,
linux-wireless@...r.kernel.org, rostedt@...dmis.org,
mingo@...hat.com, dmitry.torokhov@...il.com,
ndesaulniers@...gle.com, nathan@...nel.org,
linux-input@...r.kernel.org,
Nathan Chancellor <natechancellor@...il.com>,
Andy Lavr <andy.lavr@...il.com>,
Anders Roxell <anders.roxell@...aro.org>
Subject: [PATCH 4.14 3/6] mwifiex: Remove unnecessary braces from HostCmd_SET_SEQ_NO_BSS_INFO
From: Nathan Chancellor <natechancellor@...il.com>
commit 6a953dc4dbd1c7057fb765a24f37a5e953c85fb0 upstream.
A new warning in clang points out when macro expansion might result in a
GNU C statement expression. There is an instance of this in the mwifiex
driver:
drivers/net/wireless/marvell/mwifiex/cmdevt.c:217:34: warning: '}' and
')' tokens terminating statement expression appear in different macro
expansion contexts [-Wcompound-token-split-by-macro]
host_cmd->seq_num = cpu_to_le16(HostCmd_SET_SEQ_NO_BSS_INFO
^~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/net/wireless/marvell/mwifiex/fw.h:519:46: note: expanded from
macro 'HostCmd_SET_SEQ_NO_BSS_INFO'
(((type) & 0x000f) << 12); }
^
This does not appear to be a real issue. Removing the braces and
replacing them with parentheses will fix the warning and not change the
meaning of the code.
Fixes: 5e6e3a92b9a4 ("wireless: mwifiex: initial commit for Marvell mwifiex driver")
Link: https://github.com/ClangBuiltLinux/linux/issues/1146
Reported-by: Andy Lavr <andy.lavr@...il.com>
Signed-off-by: Nathan Chancellor <natechancellor@...il.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@...gle.com>
Signed-off-by: Kalle Valo <kvalo@...eaurora.org>
Signed-off-by: Anders Roxell <anders.roxell@...aro.org>
---
drivers/net/wireless/marvell/mwifiex/cmdevt.c | 4 ++--
drivers/net/wireless/marvell/mwifiex/fw.h | 8 ++++----
2 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/drivers/net/wireless/marvell/mwifiex/cmdevt.c b/drivers/net/wireless/marvell/mwifiex/cmdevt.c
index 0edc5d621304..a9cee3dac97b 100644
--- a/drivers/net/wireless/marvell/mwifiex/cmdevt.c
+++ b/drivers/net/wireless/marvell/mwifiex/cmdevt.c
@@ -323,9 +323,9 @@ static int mwifiex_dnld_sleep_confirm_cmd(struct mwifiex_adapter *adapter)
adapter->seq_num++;
sleep_cfm_buf->seq_num =
- cpu_to_le16((HostCmd_SET_SEQ_NO_BSS_INFO
+ cpu_to_le16(HostCmd_SET_SEQ_NO_BSS_INFO
(adapter->seq_num, priv->bss_num,
- priv->bss_type)));
+ priv->bss_type));
mwifiex_dbg(adapter, CMD,
"cmd: DNLD_CMD: %#x, act %#x, len %d, seqno %#x\n",
diff --git a/drivers/net/wireless/marvell/mwifiex/fw.h b/drivers/net/wireless/marvell/mwifiex/fw.h
index 1d86d29b64cc..c802b73a15c5 100644
--- a/drivers/net/wireless/marvell/mwifiex/fw.h
+++ b/drivers/net/wireless/marvell/mwifiex/fw.h
@@ -498,10 +498,10 @@ enum mwifiex_channel_flags {
#define RF_ANTENNA_AUTO 0xFFFF
-#define HostCmd_SET_SEQ_NO_BSS_INFO(seq, num, type) { \
- (((seq) & 0x00ff) | \
- (((num) & 0x000f) << 8)) | \
- (((type) & 0x000f) << 12); }
+#define HostCmd_SET_SEQ_NO_BSS_INFO(seq, num, type) \
+ ((((seq) & 0x00ff) | \
+ (((num) & 0x000f) << 8)) | \
+ (((type) & 0x000f) << 12))
#define HostCmd_GET_SEQ_NO(seq) \
((seq) & HostCmd_SEQ_NUM_MASK)
--
2.34.1
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