From: Nathan Chancellor <natechancellor@gmail.com>
To: John Crispin <john@phrozen.org>,
Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Nick Desaulniers <ndesaulniers@google.com>,
linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org,
clang-built-linux@googlegroups.com,
Nathan Chancellor <natechancellor@gmail.com>,
Dmitry Golovin <dima@golovin.in>
Subject: [PATCH] MIPS: lantiq: Explicitly compare LTQ_EBU_PCC_ISTAT against 0
Date: Tue, 5 Jan 2021 13:15:48 -0700 [thread overview]
Message-ID: <20210105201548.50920-1-natechancellor@gmail.com> (raw)
When building xway_defconfig with clang:
arch/mips/lantiq/irq.c:305:48: error: use of logical '&&' with constant
operand [-Werror,-Wconstant-logical-operand]
if ((irq == LTQ_ICU_EBU_IRQ) && (module == 0) && LTQ_EBU_PCC_ISTAT)
^ ~~~~~~~~~~~~~~~~~
arch/mips/lantiq/irq.c:305:48: note: use '&' for a bitwise operation
if ((irq == LTQ_ICU_EBU_IRQ) && (module == 0) && LTQ_EBU_PCC_ISTAT)
^~
&
arch/mips/lantiq/irq.c:305:48: note: remove constant to silence this
warning
if ((irq == LTQ_ICU_EBU_IRQ) && (module == 0) && LTQ_EBU_PCC_ISTAT)
~^~~~~~~~~~~~~~~~~~~~
1 error generated.
Explicitly compare the constant LTQ_EBU_PCC_ISTAT against 0 to fix the
warning. Additionally, remove the unnecessary parentheses as this is a
simple conditional statement and shorthand '== 0' to '!'.
Fixes: 3645da0276ae ("OF: MIPS: lantiq: implement irq_domain support")
Link: https://github.com/ClangBuiltLinux/linux/issues/807
Reported-by: Dmitry Golovin <dima@golovin.in>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
---
arch/mips/lantiq/irq.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/mips/lantiq/irq.c b/arch/mips/lantiq/irq.c
index df8eed3875f6..43c2f271e6ab 100644
--- a/arch/mips/lantiq/irq.c
+++ b/arch/mips/lantiq/irq.c
@@ -302,7 +302,7 @@ static void ltq_hw_irq_handler(struct irq_desc *desc)
generic_handle_irq(irq_linear_revmap(ltq_domain, hwirq));
/* if this is a EBU irq, we need to ack it or get a deadlock */
- if ((irq == LTQ_ICU_EBU_IRQ) && (module == 0) && LTQ_EBU_PCC_ISTAT)
+ if (irq == LTQ_ICU_EBU_IRQ && !module && LTQ_EBU_PCC_ISTAT != 0)
ltq_ebu_w32(ltq_ebu_r32(LTQ_EBU_PCC_ISTAT) | 0x10,
LTQ_EBU_PCC_ISTAT);
}
base-commit: 36bbbd0e234d817938bdc52121a0f5473b3e58f5
--
2.30.0
next reply other threads:[~2021-01-05 20:16 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-05 20:15 Nathan Chancellor [this message]
2021-01-07 16:26 ` [PATCH] MIPS: lantiq: Explicitly compare LTQ_EBU_PCC_ISTAT against 0 Thomas Bogendoerfer
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