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Subject[PATCH] riscv: asm/gdb_xml.h: use __maybe_used to make W=1 warnings go away
Date
0day/kbuild reports warnings with the ASoC codecs compiled with W=1.

In file included from arch/riscv/include/asm/kgdb.h:109,
from include/linux/kgdb.h:20,
from include/linux/fb.h:5,
from include/drm/drm_crtc.h:31,
from sound/soc/codecs/hdmi-codec.c:19:

arch/riscv/include/asm/gdb_xml.h:23:19: warning:
'riscv_gdb_stub_cpuxml' defined but not used [-Wunused-const-variable=]
23 | static const char riscv_gdb_stub_cpuxml[2048] =
| ^~~~~~~~~~~~~~~~~~~~~
arch/riscv/include/asm/gdb_xml.h:16:19: warning:
'riscv_gdb_stub_target_desc' defined but not used [-Wunused-const-variable=]
16 | static const char riscv_gdb_stub_target_desc[256] =
| ^~~~~~~~~~~~~~~~~~~~~~~~~~
arch/riscv/include/asm/gdb_xml.h:13:19: warning:
'gdb_xfer_read_cpuxml' defined but not used [-Wunused-const-variable=]
13 | static const char gdb_xfer_read_cpuxml[39] =
| ^~~~~~~~~~~~~~~~~~~~
arch/riscv/include/asm/gdb_xml.h:10:19: warning:
'gdb_xfer_read_target' defined but not used [-Wunused-const-variable=]
10 | static const char gdb_xfer_read_target[31] = "qXfer:features:read:target.xml:";
| ^~~~~~~~~~~~~~~~~~~~
arch/riscv/include/asm/gdb_xml.h:7:19: warning:
'riscv_gdb_stub_feature' defined but not used [-Wunused-const-variable=]
7 | static const char riscv_gdb_stub_feature[64] =
| ^~~~~~~~~~~~~~~~~~~~~~

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
---

I don't know if this is the right way of solving this issue but this
error is now consistently thrown in kbuild compile-test reports w/
W=1.

arch/riscv/include/asm/gdb_xml.h | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/arch/riscv/include/asm/gdb_xml.h b/arch/riscv/include/asm/gdb_xml.h
index 041b45f5b997..c28fc1a1d230 100644
--- a/arch/riscv/include/asm/gdb_xml.h
+++ b/arch/riscv/include/asm/gdb_xml.h
@@ -4,23 +4,23 @@
#define __ASM_GDB_XML_H_

#define kgdb_arch_gdb_stub_feature riscv_gdb_stub_feature
-static const char riscv_gdb_stub_feature[64] =
+static __maybe_unused const char riscv_gdb_stub_feature[64] =
"PacketSize=800;qXfer:features:read+;";

-static const char gdb_xfer_read_target[31] = "qXfer:features:read:target.xml:";
+static __maybe_unused const char gdb_xfer_read_target[31] = "qXfer:features:read:target.xml:";

#ifdef CONFIG_64BIT
-static const char gdb_xfer_read_cpuxml[39] =
+static __maybe_unused const char gdb_xfer_read_cpuxml[39] =
"qXfer:features:read:riscv-64bit-cpu.xml";

-static const char riscv_gdb_stub_target_desc[256] =
+static __maybe_unused const char riscv_gdb_stub_target_desc[256] =
"l<?xml version=\"1.0\"?>"
"<!DOCTYPE target SYSTEM \"gdb-target.dtd\">"
"<target>"
"<xi:include href=\"riscv-64bit-cpu.xml\"/>"
"</target>";

-static const char riscv_gdb_stub_cpuxml[2048] =
+static __maybe_unused const char riscv_gdb_stub_cpuxml[2048] =
"l<?xml version=\"1.0\"?>"
"<!DOCTYPE feature SYSTEM \"gdb-target.dtd\">"
"<feature name=\"org.gnu.gdb.riscv.cpu\">"
--
2.25.1
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