From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: "David S. Miller" <davem@davemloft.net>,
Sasha Levin <sashal@kernel.org>,
sparclinux@vger.kernel.org, netdev@vger.kernel.org,
bpf@vger.kernel.org
Subject: [PATCH AUTOSEL 4.4 40/77] sparc64: Rework xchg() definition to avoid warnings.
Date: Sat, 16 Nov 2019 10:53:02 -0500 [thread overview]
Message-ID: <20191116155339.11909-40-sashal@kernel.org> (raw)
In-Reply-To: <20191116155339.11909-1-sashal@kernel.org>
From: "David S. Miller" <davem@davemloft.net>
[ Upstream commit 6c2fc9cddc1ffdef8ada1dc8404e5affae849953 ]
Such as:
fs/ocfs2/file.c: In function ‘ocfs2_file_write_iter’:
./arch/sparc/include/asm/cmpxchg_64.h:55:22: warning: value computed is not used [-Wunused-value]
#define xchg(ptr,x) ((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr))))
and
drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c: In function ‘ixgbevf_xdp_setup’:
./arch/sparc/include/asm/cmpxchg_64.h:55:22: warning: value computed is not used [-Wunused-value]
#define xchg(ptr,x) ((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr))))
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
arch/sparc/include/asm/cmpxchg_64.h | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/arch/sparc/include/asm/cmpxchg_64.h b/arch/sparc/include/asm/cmpxchg_64.h
index faa2f61058c27..92f0a46ace78e 100644
--- a/arch/sparc/include/asm/cmpxchg_64.h
+++ b/arch/sparc/include/asm/cmpxchg_64.h
@@ -40,7 +40,12 @@ static inline unsigned long xchg64(__volatile__ unsigned long *m, unsigned long
return val;
}
-#define xchg(ptr,x) ((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr))))
+#define xchg(ptr,x) \
+({ __typeof__(*(ptr)) __ret; \
+ __ret = (__typeof__(*(ptr))) \
+ __xchg((unsigned long)(x), (ptr), sizeof(*(ptr))); \
+ __ret; \
+})
void __xchg_called_with_bad_pointer(void);
--
2.20.1
next prev parent reply other threads:[~2019-11-16 15:57 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20191116155339.11909-1-sashal@kernel.org>
2019-11-16 15:52 ` [PATCH AUTOSEL 4.4 07/77] brcmsmac: AP mode: update beacon when TIM changes Sasha Levin
2019-11-16 15:52 ` [PATCH AUTOSEL 4.4 22/77] net: fix warning in af_unix Sasha Levin
2019-11-16 15:52 ` [PATCH AUTOSEL 4.4 27/77] SUNRPC: Fix a compile warning for cmpxchg64() Sasha Levin
2019-11-16 15:52 ` [PATCH AUTOSEL 4.4 28/77] atm: zatm: Fix empty body Clang warnings Sasha Levin
2019-11-16 15:52 ` [PATCH AUTOSEL 4.4 34/77] mISDN: Fix type of switch control variable in ctrl_teimanager Sasha Levin
2019-11-16 15:52 ` [PATCH AUTOSEL 4.4 35/77] qlcnic: fix a return in qlcnic_dcb_get_capability() Sasha Levin
2019-11-16 15:53 ` Sasha Levin [this message]
2019-11-16 15:53 ` [PATCH AUTOSEL 4.4 53/77] igb: shorten maximum PHC timecounter update interval Sasha Levin
2019-11-16 15:53 ` [PATCH AUTOSEL 4.4 54/77] ntb_netdev: fix sleep time mismatch Sasha Levin
2019-11-16 15:53 ` [PATCH AUTOSEL 4.4 58/77] net: do not abort bulk send on BQL status Sasha Levin
2019-11-16 15:53 ` [PATCH AUTOSEL 4.4 61/77] wlcore: Fix the return value in case of error in 'wlcore_vendor_cmd_smart_config_start()' Sasha Levin
2019-11-16 15:53 ` [PATCH AUTOSEL 4.4 62/77] rtl8xxxu: Fix missing break in switch Sasha Levin
2019-11-16 15:53 ` [PATCH AUTOSEL 4.4 63/77] brcmsmac: never log "tid x is not agg'able" by default Sasha Levin
2019-11-16 15:53 ` [PATCH AUTOSEL 4.4 64/77] wireless: airo: potential buffer overflow in sprintf() Sasha Levin
2019-11-16 15:53 ` [PATCH AUTOSEL 4.4 65/77] rtlwifi: rtl8192de: Fix misleading REG_MCUFWDL information Sasha Levin
2019-11-16 15:53 ` [PATCH AUTOSEL 4.4 72/77] net: bcmgenet: return correct value 'ret' from bcmgenet_power_down Sasha Levin
2019-11-16 15:53 ` [PATCH AUTOSEL 4.4 73/77] sock: Reset dst when changing sk_mark via setsockopt Sasha Levin
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