Re: [PATCH v2] remoteproc: mediatek: fix side effect of mt8195 sram power on

kernel test robot
2022-03-11T23:57:06Z

Hi Tinghan,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on remoteproc/rproc-next]
[also build test ERROR on v5.17-rc7 next-20220310]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url: https://github.com/0day-ci/linux/commits/Tinghan-Shen/remoteproc-mediatek-fix-side-effect-of-mt8195-sram-power-on/20220311-203255
base: git://git.kernel.org/pub/scm/linux/kernel/git/remoteproc/linux.git rproc-next
config: s390-buildonly-randconfig-r004-20220310 (https://download.01.org/0day-ci/archive/20220312/202203120744.6e2bnwRT-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 276ca87382b8f16a65bddac700202924228982f6)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install s390 cross compiling tool for clang build
# apt-get install binutils-s390x-linux-gnu
# https://github.com/0day-ci/linux/commit/6d56ab3bae4e0d5e07d295169602883ba7d7de08
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Tinghan-Shen/remoteproc-mediatek-fix-side-effect-of-mt8195-sram-power-on/20220311-203255
git checkout 6d56ab3bae4e0d5e07d295169602883ba7d7de08
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=s390 SHELL=/bin/bash drivers/remoteproc/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

In file included from drivers/remoteproc/mtk_scp.c:7:
In file included from include/linux/dma-mapping.h:10:
In file included from include/linux/scatterlist.h:9:
In file included from arch/s390/include/asm/io.h:75:
include/asm-generic/io.h:464:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __raw_readb(PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:477:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
~~~~~~~~~~ ^
include/uapi/linux/byteorder/big_endian.h:37:59: note: expanded from macro '__le16_to_cpu'
#define __le16_to_cpu(x) __swab16((__force __u16)(__le16)(x))
^
include/uapi/linux/swab.h:102:54: note: expanded from macro '__swab16'
#define __swab16(x) (__u16)__builtin_bswap16((__u16)(x))
^
In file included from drivers/remoteproc/mtk_scp.c:7:
In file included from include/linux/dma-mapping.h:10:
In file included from include/linux/scatterlist.h:9:
In file included from arch/s390/include/asm/io.h:75:
include/asm-generic/io.h:490:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
~~~~~~~~~~ ^
include/uapi/linux/byteorder/big_endian.h:35:59: note: expanded from macro '__le32_to_cpu'
#define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x))
^
include/uapi/linux/swab.h:115:54: note: expanded from macro '__swab32'
#define __swab32(x) (__u32)__builtin_bswap32((__u32)(x))
^
In file included from drivers/remoteproc/mtk_scp.c:7:
In file included from include/linux/dma-mapping.h:10:
In file included from include/linux/scatterlist.h:9:
In file included from arch/s390/include/asm/io.h:75:
include/asm-generic/io.h:501:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writeb(value, PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:511:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:521:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:609:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
readsb(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:617:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
readsw(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:625:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
readsl(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:634:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
writesb(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:643:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
writesw(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:652:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
writesl(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
>> drivers/remoteproc/mtk_scp.c:418:6: error: use of undeclared identifier 'MT8195_L1TCM_SRAM_PDN_RESERVED_BITS'
MT8195_L1TCM_SRAM_PDN_RESERVED_BITS);
^
drivers/remoteproc/mtk_scp.c:592:7: error: use of undeclared identifier 'MT8195_L1TCM_SRAM_PDN_RESERVED_BITS'
MT8195_L1TCM_SRAM_PDN_RESERVED_BITS);
^
12 warnings and 2 errors generated.

vim +/MT8195_L1TCM_SRAM_PDN_RESERVED_BITS +418 drivers/remoteproc/mtk_scp.c

405
406 static int mt8195_scp_before_load(struct mtk_scp *scp)
407 {
408 /* clear SPM interrupt, SCP2SPM_IPC_CLR */
409 writel(0xff, scp->reg_base + MT8192_SCP2SPM_IPC_CLR);
410
411 writel(1, scp->reg_base + MT8192_CORE0_SW_RSTN_SET);
412
413 /* enable SRAM clock */
414 scp_sram_power_on(scp->reg_base + MT8192_L2TCM_SRAM_PD_0, 0);
415 scp_sram_power_on(scp->reg_base + MT8192_L2TCM_SRAM_PD_1, 0);
416 scp_sram_power_on(scp->reg_base + MT8192_L2TCM_SRAM_PD_2, 0);
417 scp_sram_power_on(scp->reg_base + MT8192_L1TCM_SRAM_PDN,
> 418 MT8195_L1TCM_SRAM_PDN_RESERVED_BITS);
419 scp_sram_power_on(scp->reg_base + MT8192_CPU0_SRAM_PD, 0);
420
421 /* enable MPU for all memory regions */
422 writel(0xff, scp->reg_base + MT8192_CORE0_MEM_ATT_PREDEF);
423
424 return 0;
425 }
426

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