linux-kernel - [PATCH 08/20] media: solo6x10: add _maybe

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Message-Id: <18daa194878d8815beef39d6fed2a838e1c2cb68.1637781097.git.mchehab+huawei@kernel.org>
Date:   Wed, 24 Nov 2021 20:13:11 +0100
From:   Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
To:     unlisted-recipients:; (no To-header on input)
Cc:     linuxarm@...wei.com, mauro.chehab@...wei.com,
        Mauro Carvalho Chehab <mchehab+huawei@...nel.org>,
        Andrey Utkin <andrey_utkin@...tmail.com>,
        Anton Sviridenko <anton@...p.bluecherry.net>,
        Bluecherry Maintainers <maintainers@...echerrydvr.com>,
        Ismael Luceno <ismael@...ev.co.uk>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Nathan Chancellor <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        linux-kernel@...r.kernel.org, linux-media@...r.kernel.org,
        llvm@...ts.linux.dev
Subject: [PATCH 08/20] media: solo6x10: add _maybe_unused to currently unused functions

There are several unused helper macros there, meant to parse some
fields.

While there's not wrong with that, it generates clang warnings
with W=1, causing build to break with CONFIG_WERROR.

So, add __maybe_unused to fix such warnings.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
---

To avoid mailbombing on a large number of people, only mailing lists were C/C on the cover.
See [PATCH 00/20] at: https://lore.kernel.org/all/cover.1637781097.git.mchehab+huawei@kernel.org/

 drivers/media/pci/solo6x10/solo6x10-v4l2-enc.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/media/pci/solo6x10/solo6x10-v4l2-enc.c b/drivers/media/pci/solo6x10/solo6x10-v4l2-enc.c
index 0abcad4e84fa..85eaf5d00e9b 100644
--- a/drivers/media/pci/solo6x10/solo6x10-v4l2-enc.c
+++ b/drivers/media/pci/solo6x10/solo6x10-v4l2-enc.c
@@ -391,12 +391,12 @@ static int solo_send_desc(struct solo_enc_dev *solo_enc, int skip,
 }
 
 /* Extract values from VOP header - VE_STATUSxx */
-static inline int vop_interlaced(const vop_header *vh)
+static inline __maybe_unused int vop_interlaced(const vop_header *vh)
 {
 	return (__le32_to_cpu((*vh)[0]) >> 30) & 1;
 }
 
-static inline u8 vop_channel(const vop_header *vh)
+static inline __maybe_unused u8 vop_channel(const vop_header *vh)
 {
 	return (__le32_to_cpu((*vh)[0]) >> 24) & 0x1F;
 }
@@ -411,12 +411,12 @@ static inline u32 vop_mpeg_size(const vop_header *vh)
 	return __le32_to_cpu((*vh)[0]) & 0xFFFFF;
 }
 
-static inline u8 vop_hsize(const vop_header *vh)
+static inline u8 __maybe_unused vop_hsize(const vop_header *vh)
 {
 	return (__le32_to_cpu((*vh)[1]) >> 8) & 0xFF;
 }
 
-static inline u8 vop_vsize(const vop_header *vh)
+static inline u8 __maybe_unused vop_vsize(const vop_header *vh)
 {
 	return __le32_to_cpu((*vh)[1]) & 0xFF;
 }
@@ -436,12 +436,12 @@ static inline u32 vop_jpeg_size(const vop_header *vh)
 	return __le32_to_cpu((*vh)[4]) & 0xFFFFF;
 }
 
-static inline u32 vop_sec(const vop_header *vh)
+static inline u32 __maybe_unused vop_sec(const vop_header *vh)
 {
 	return __le32_to_cpu((*vh)[5]);
 }
 
-static inline u32 vop_usec(const vop_header *vh)
+static inline __maybe_unused u32 vop_usec(const vop_header *vh)
 {
 	return __le32_to_cpu((*vh)[6]);
 }
-- 
2.33.1