Re: [PATCH V2] mtd: rawnand: qcom: Implement exec_op()

From: kernel test robot
Date: Wed Apr 19 2023 - 23:07:32 EST

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In reply to: Md Sadre Alam: "[PATCH V2] mtd: rawnand: qcom: Implement exec_op()"
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Hi Md,

kernel test robot noticed the following build warnings:

[auto build test WARNING on mtd/nand/next]
[also build test WARNING on linus/master v6.3-rc7 next-20230419]
[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#_base_tree_information]

url: https://github.com/intel-lab-lkp/linux/commits/Md-Sadre-Alam/mtd-rawnand-qcom-Implement-exec_op/20230419-173849
base: https://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux.git nand/next
patch link: https://lore.kernel.org/r/20230419093617.27134-1-quic_mdalam%40quicinc.com
patch subject: [PATCH V2] mtd: rawnand: qcom: Implement exec_op()
config: s390-randconfig-r034-20230418 (https://download.01.org/0day-ci/archive/20230420/202304201013.6bradWxp-lkp@xxxxxxxxx/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project 437b7602e4a998220871de78afcb020b9c14a661)
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/intel-lab-lkp/linux/commit/a2d1599a63e93bde90166287021663cfc13c91b2
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Md-Sadre-Alam/mtd-rawnand-qcom-Implement-exec_op/20230419-173849
git checkout a2d1599a63e93bde90166287021663cfc13c91b2
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=s390 olddefconfig
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=s390 SHELL=/bin/bash drivers/mtd/nand/raw/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Link: https://lore.kernel.org/oe-kbuild-all/202304201013.6bradWxp-lkp@xxxxxxxxx/

All warnings (new ones prefixed by >>):

In file included from drivers/mtd/nand/raw/qcom_nandc.c:9:
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:547:31: 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:560:61: 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/mtd/nand/raw/qcom_nandc.c:9:
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:573:61: 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/mtd/nand/raw/qcom_nandc.c:9:
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:584:33: 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:594:59: 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:604:59: 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:692:20: 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:700:20: 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:708:20: 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:717:21: 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:726:21: 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:735:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
writesl(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
>> drivers/mtd/nand/raw/qcom_nandc.c:2617:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough]
default:
^
drivers/mtd/nand/raw/qcom_nandc.c:2617:2: note: insert 'break;' to avoid fall-through
default:
^
break;
13 warnings generated.

vim +2617 drivers/mtd/nand/raw/qcom_nandc.c

2587
2588 static int qcom_op_cmd_mapping(struct qcom_nand_controller *nandc, u8 cmd,
2589 struct qcom_op *q_op)
2590 {
2591 int ret = 0;
2592
2593 switch (cmd) {
2594 case NAND_CMD_RESET:
2595 ret = OP_RESET_DEVICE;
2596 break;
2597 case NAND_CMD_READID:
2598 ret = OP_FETCH_ID;
2599 break;
2600 case NAND_CMD_PARAM:
2601 if (nandc->props->qpic_v2)
2602 ret = OP_PAGE_READ_ONFI_READ;
2603 else
2604 ret = OP_PAGE_READ;
2605 break;
2606 case NAND_CMD_ERASE1:
2607 case NAND_CMD_ERASE2:
2608 ret = OP_BLOCK_ERASE;
2609 break;
2610 case NAND_CMD_STATUS:
2611 ret = OP_CHECK_STATUS;
2612 break;
2613 case NAND_CMD_PAGEPROG:
2614 ret = OP_PROGRAM_PAGE;
2615 q_op->flag = NAND_CMD_PAGEPROG;
2616 nandc->exec_opwrite = true;
> 2617 default:
2618 break;
2619 }
2620
2621 return ret;
2622 }
2623

--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests

Next message: longli: "[PATCH v3] Drivers: hv: move panic report code from vmbus to hv early init code"
Previous message: Sui Jingfeng: "[PATCH v5] drm/fbdev-generic: prohibit potential out-of-bounds access"
In reply to: Md Sadre Alam: "[PATCH V2] mtd: rawnand: qcom: Implement exec_op()"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]