All of lore.kernel.org
 help / color / mirror / Atom feed
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

  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

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20170708155030.12587-2-andriy.shevchenko@linux.intel.com \
    --to=andriy.shevchenko@linux.intel.com \
    --cc=hpa@zytor.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-pm@vger.kernel.org \
    --cc=mingo@redhat.com \
    --cc=rjw@rjwysocki.net \
    --cc=tglx@linutronix.de \
    --cc=x86@kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.