From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: "Rafael J. Wysocki" <rjw@rjwysocki.net>,
linux-pm@vger.kernel.org, Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
x86@kernel.org, linux-kernel@vger.kernel.org
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Subject: [PATCH v1 2/2] ACPI / boot: Don't define unused variables
Date: Sat, 8 Jul 2017 18:50:30 +0300 [thread overview]
Message-ID: <20170708155030.12587-2-andriy.shevchenko@linux.intel.com> (raw)
In-Reply-To: <20170708155030.12587-1-andriy.shevchenko@linux.intel.com>
Some code in acpi_parse_x2apic() conditionally compiled, though parts of
it are being used in any case. This annoys gcc.
arch/x86/kernel/acpi/boot.c: In function ‘acpi_parse_x2apic’:
arch/x86/kernel/acpi/boot.c:203:5: warning: variable ‘enabled’ set but not used [-Wunused-but-set-variable]
u8 enabled;
^~~~~~~
arch/x86/kernel/acpi/boot.c:202:6: warning: variable ‘apic_id’ set but not used [-Wunused-but-set-variable]
int apic_id;
^~~~~~~
Re-arrange the code to avoid compiling unused variables.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
arch/x86/kernel/acpi/boot.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
index ac9bb564f004..f33eddf4eaa9 100644
--- a/arch/x86/kernel/acpi/boot.c
+++ b/arch/x86/kernel/acpi/boot.c
@@ -199,8 +199,10 @@ static int __init
acpi_parse_x2apic(struct acpi_subtable_header *header, const unsigned long end)
{
struct acpi_madt_local_x2apic *processor = NULL;
+#ifdef CONFIG_X86_X2APIC
int apic_id;
u8 enabled;
+#endif
processor = (struct acpi_madt_local_x2apic *)header;
@@ -209,9 +211,10 @@ acpi_parse_x2apic(struct acpi_subtable_header *header, const unsigned long end)
acpi_table_print_madt_entry(header);
+#ifdef CONFIG_X86_X2APIC
apic_id = processor->local_apic_id;
enabled = processor->lapic_flags & ACPI_MADT_ENABLED;
-#ifdef CONFIG_X86_X2APIC
+
/*
* We need to register disabled CPU as well to permit
* counting disabled CPUs. This allows us to size
--
2.11.0
next prev parent reply other threads:[~2017-07-08 15:51 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-07-08 15:50 [PATCH v1 1/2] ACPI / boot: Correct address space of __acpi_map_table() Andy Shevchenko
2017-07-08 15:50 ` Andy Shevchenko [this message]
2017-07-17 9:49 ` Hanjun Guo
2017-07-17 9:49 ` Hanjun Guo
2017-07-17 9:57 ` Andy Shevchenko
2017-07-17 10:00 ` Andy Shevchenko
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