linux-kernel - drivers/clk/davinci/psc.c:281:10: error: incompatible integer to pointer conversion returning 'int' from a function with result type 'struct davinci_lpsc

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Message-ID: <CA+G9fYs+gwu67Y0Tm2FHfNuUA5eLxT2FAWkfKvYrEbXJUXXiiA@mail.gmail.com>
Date: Mon, 18 Nov 2024 18:40:38 +0530
From: Naresh Kamboju <naresh.kamboju@...aro.org>
To: linux-clk <linux-clk@...r.kernel.org>, clang-built-linux <llvm@...ts.linux.dev>, 
	open list <linux-kernel@...r.kernel.org>, lkft-triage@...ts.linaro.org, 
	Linux Regressions <regressions@...ts.linux.dev>
Cc: hanchunchao@...pur.com, Stephen Boyd <sboyd@...nel.org>, david@...hnology.com, 
	Michael Turquette <mturquette@...libre.com>, Arnd Bergmann <arnd@...db.de>, 
	Dan Carpenter <dan.carpenter@...aro.org>, Anders Roxell <anders.roxell@...aro.org>
Subject: drivers/clk/davinci/psc.c:281:10: error: incompatible integer to
 pointer conversion returning 'int' from a function with result type 'struct
 davinci_lpsc_clk *' [-Wint-conversion]

The davinci_all_defconfig and multi_v5_defconfig builds failed with clang-19 and
clang-nightly on the Linux next-20241115 tag for the arm architectures.
Same build pass with gcc-13.

First seen on Linux next-20241118 tag.
  Good: next-20241115
  Bad:  next-20241118

arm
* arm, build
  - clang-19-davinci_all_defconfig
  - clang-19-multi_v5_defconfig
  - clang-19-multi_v5_defconfig-65236a87
  - clang-nightly-davinci_all_defconfig
  - clang-nightly-multi_v5_defconfig
  - clang-nightly-multi_v5_defconfig-65236a87

Reported-by: Linux Kernel Functional Testing <lkft@...aro.org>

Build error:
---------
drivers/clk/davinci/psc.c:281:10: error: incompatible integer to
pointer conversion returning 'int' from a function with result type
'struct davinci_lpsc_clk *' [-Wint-conversion]
  281 |                 return -ENOMEM;
      |                        ^~~~~~~
1 error generated.
make[6]: *** [scripts/Makefile.build:200: drivers/clk/davinci/psc.o] Error 1

Build image:
-----------
- https://storage.tuxsuite.com/public/linaro/lkft/builds/2p15j4StPnjuuRXu3qgndSTbahH/
- https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20241118/testrun/25881399/suite/build/test/clang-19-davinci_all_defconfig/history/
- https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20241118/testrun/25881399/suite/build/test/clang-19-davinci_all_defconfig/details/
- https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20241118/testrun/25881399/suite/build/test/clang-19-davinci_all_defconfig/log

Steps to reproduce:
------------
- # tuxmake --runtime podman --target-arch arm --toolchain clang-19
--kconfig davinci_all_defconfig LLVM=1 LLVM_IAS=1

metadata:
----
  git describe: next-20241118
  git repo: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
  git sha: ae58226b89ac0cffa05ba7357733776542e40216
  kernel config:
https://storage.tuxsuite.com/public/linaro/lkft/builds/2p15j4StPnjuuRXu3qgndSTbahH/config
  build url: https://storage.tuxsuite.com/public/linaro/lkft/builds/2p15j4StPnjuuRXu3qgndSTbahH/
  toolchain: clang-19
  config: davinci_all_defconfig and multi_v5_defconfig
  arch: arm

--
Linaro LKFT
https://lkft.linaro.org