[intel-lts:5.10/KMB-yocto 49/62] drivers/gpu/drm/kmb/kmb_drv.c:39:5: warning: no previous prototype for function 'kmb_display_clk_enable'
9:05 a.m.
tree: https://github.com/intel/linux-intel-lts.git 5.10/KMB-yocto
head: afd0620ed0e5ce91d03f51deb2e551721ba97640
commit: 01c1338e9611c7c8a65c84e0102298bd9f0732d0 [49/62] drm/kmb: Enable support for fbcon
(framebuffer console)
config: riscv-randconfig-r042-20211209
(https://download.01.org/0day-ci/archive/20211210/202112100556.kUVV7RMR-lk...)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project
097a1cb1d5ebb3a0ec4bcaed8ba3ff6a8e33c00a)
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 riscv cross compiling tool for clang build
# apt-get install binutils-riscv64-linux-gnu
#
https://github.com/intel/linux-intel-lts/commit/01c1338e9611c7c8a65c84e01...
git remote add intel-lts https://github.com/intel/linux-intel-lts.git
git fetch --no-tags intel-lts 5.10/KMB-yocto
git checkout 01c1338e9611c7c8a65c84e0102298bd9f0732d0
# 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=riscv SHELL=/bin/bash drivers/gpu/drm/kmb/ drivers/spi/
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp(a)intel.com>
All warnings (new ones prefixed by >>):
~~~~~~~~~~ ^
arch/riscv/include/asm/mmio.h:87:48: note: expanded from macro 'readb_cpu'
#define readb_cpu(c) ({ u8 __r = __raw_readb(c); __r; })
^
In file included from drivers/gpu/drm/kmb/kmb_drv.c:18:
In file included from include/linux/regmap.h:20:
In file included from include/linux/iopoll.h:14:
In file included from include/linux/io.h:13:
In file included from arch/riscv/include/asm/io.h:149:
include/asm-generic/io.h:564:9: warning: performing pointer arithmetic on a null
pointer has undefined behavior [-Wnull-pointer-arithmetic]
return inw(addr);
^~~~~~~~~
arch/riscv/include/asm/io.h:56:76: note: expanded from macro 'inw'
#define inw(c) ({ u16 __v; __io_pbr(); __v = readw_cpu((void*)(PCI_IOBASE +
(c))); __io_par(__v); __v; })
~~~~~~~~~~ ^
arch/riscv/include/asm/mmio.h:88:76: note: expanded from macro 'readw_cpu'
#define readw_cpu(c) ({ u16 __r = le16_to_cpu((__force
__le16)__raw_readw(c)); __r; })
^
include/uapi/linux/byteorder/little_endian.h:36:51: note: expanded from macro
'__le16_to_cpu'
#define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
^
In file included from drivers/gpu/drm/kmb/kmb_drv.c:18:
In file included from include/linux/regmap.h:20:
In file included from include/linux/iopoll.h:14:
In file included from include/linux/io.h:13:
In file included from arch/riscv/include/asm/io.h:149:
include/asm-generic/io.h:572:9: warning: performing pointer arithmetic on a null
pointer has undefined behavior [-Wnull-pointer-arithmetic]
return inl(addr);
^~~~~~~~~
arch/riscv/include/asm/io.h:57:76: note: expanded from macro 'inl'
#define inl(c) ({ u32 __v; __io_pbr(); __v = readl_cpu((void*)(PCI_IOBASE +
(c))); __io_par(__v); __v; })
~~~~~~~~~~ ^
arch/riscv/include/asm/mmio.h:89:76: note: expanded from macro 'readl_cpu'
#define readl_cpu(c) ({ u32 __r = le32_to_cpu((__force
__le32)__raw_readl(c)); __r; })
^
include/uapi/linux/byteorder/little_endian.h:34:51: note: expanded from macro
'__le32_to_cpu'
#define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
^
In file included from drivers/gpu/drm/kmb/kmb_drv.c:18:
In file included from include/linux/regmap.h:20:
In file included from include/linux/iopoll.h:14:
In file included from include/linux/io.h:13:
In file included from arch/riscv/include/asm/io.h:149:
include/asm-generic/io.h:580:2: warning: performing pointer arithmetic on a null
pointer has undefined behavior [-Wnull-pointer-arithmetic]
outb(value, addr);
^~~~~~~~~~~~~~~~~
arch/riscv/include/asm/io.h:59:68: note: expanded from macro 'outb'
#define outb(v,c) ({ __io_pbw(); writeb_cpu((v),(void*)(PCI_IOBASE + (c)));
__io_paw(); })
~~~~~~~~~~ ^
arch/riscv/include/asm/mmio.h:91:52: note: expanded from macro 'writeb_cpu'
#define writeb_cpu(v, c) ((void)__raw_writeb((v), (c)))
^
In file included from drivers/gpu/drm/kmb/kmb_drv.c:18:
In file included from include/linux/regmap.h:20:
In file included from include/linux/iopoll.h:14:
In file included from include/linux/io.h:13:
In file included from arch/riscv/include/asm/io.h:149:
include/asm-generic/io.h:588:2: warning: performing pointer arithmetic on a null
pointer has undefined behavior [-Wnull-pointer-arithmetic]
outw(value, addr);
^~~~~~~~~~~~~~~~~
arch/riscv/include/asm/io.h:60:68: note: expanded from macro 'outw'
#define outw(v,c) ({ __io_pbw(); writew_cpu((v),(void*)(PCI_IOBASE + (c)));
__io_paw(); })
~~~~~~~~~~ ^
arch/riscv/include/asm/mmio.h:92:76: note: expanded from macro 'writew_cpu'
#define writew_cpu(v, c) ((void)__raw_writew((__force u16)cpu_to_le16(v), (c)))
^
In file included from drivers/gpu/drm/kmb/kmb_drv.c:18:
In file included from include/linux/regmap.h:20:
In file included from include/linux/iopoll.h:14:
In file included from include/linux/io.h:13:
In file included from arch/riscv/include/asm/io.h:149:
include/asm-generic/io.h:596:2: warning: performing pointer arithmetic on a null
pointer has undefined behavior [-Wnull-pointer-arithmetic]
outl(value, addr);
^~~~~~~~~~~~~~~~~
arch/riscv/include/asm/io.h:61:68: note: expanded from macro 'outl'
#define outl(v,c) ({ __io_pbw(); writel_cpu((v),(void*)(PCI_IOBASE + (c)));
__io_paw(); })
~~~~~~~~~~ ^
arch/riscv/include/asm/mmio.h:93:76: note: expanded from macro 'writel_cpu'
#define writel_cpu(v, c) ((void)__raw_writel((__force u32)cpu_to_le32(v), (c)))
^
In file included from drivers/gpu/drm/kmb/kmb_drv.c:18:
In file included from include/linux/regmap.h:20:
In file included from include/linux/iopoll.h:14:
In file included from include/linux/io.h:13:
In file included from arch/riscv/include/asm/io.h:149:
include/asm-generic/io.h:1005:55: warning: performing pointer arithmetic on a null
pointer has undefined behavior [-Wnull-pointer-arithmetic]
return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
~~~~~~~~~~ ^
In file included from drivers/gpu/drm/kmb/kmb_drv.c:22:
In file included from include/drm/drm_fb_helper.h:39:
In file included from include/linux/vgaarb.h:34:
include/video/vga.h:215:2: warning: performing pointer arithmetic on a null pointer has
undefined behavior [-Wnull-pointer-arithmetic]
outw(VGA_OUT16VAL (val, reg), port);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/riscv/include/asm/io.h:60:68: note: expanded from macro 'outw'
#define outw(v,c) ({ __io_pbw(); writew_cpu((v),(void*)(PCI_IOBASE + (c)));
__io_paw(); })
~~~~~~~~~~ ^
arch/riscv/include/asm/mmio.h:92:76: note: expanded from macro 'writew_cpu'
#define writew_cpu(v, c) ((void)__raw_writew((__force u16)cpu_to_le16(v), (c)))
^
> drivers/gpu/drm/kmb/kmb_drv.c:39:5: warning: no previous
prototype for function 'kmb_display_clk_enable' [-Wmissing-prototypes]
int kmb_display_clk_enable(struct kmb_drm_private *kmb)
^
drivers/gpu/drm/kmb/kmb_drv.c:39:1: note: declare 'static' if the function is
not intended to be used outside of this translation unit
int kmb_display_clk_enable(struct kmb_drm_private *kmb)
^
static
9 warnings generated.
vim +/kmb_display_clk_enable +39 drivers/gpu/drm/kmb/kmb_drv.c
32
33 /* Module Parameters */
34 static bool console;
35 module_param(console, bool, 0400);
36 MODULE_PARM_DESC(console,
37 "Enable framebuffer console support (0=disable [default], 1=on)");
38
39 int kmb_display_clk_enable(struct kmb_drm_private *kmb)
40 {
41 int ret = 0;
42
43 ret = clk_prepare_enable(kmb->kmb_clk.clk_lcd);
44 if (ret) {
45 drm_err(&kmb->drm, "Failed to enable LCD clock: %d\n", ret);
46 return ret;
47 }
48 DRM_INFO("SUCCESS : enabled LCD clocks\n");
49 return 0;
50 }
51
---
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