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Date: Wed, 10 Nov 2021 17:22:44 +0800
From: kernel test robot <lkp@...el.com>
To: Linus Walleij <linus.walleij@...aro.org>
Cc: kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org
Subject: arch/arm/mach-ixp4xx/common-pci.c:143:5: warning: no previous
prototype for 'ixp4xx_pci_write'
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: cb690f5238d71f543f4ce874aa59237cf53a877c
commit: d5d9f7ac58ea1041375a028f143ca5784693ea86 ARM/ixp4xx: Make NEED_MACH_IO_H optional
date: 5 months ago
config: arm-randconfig-r011-20211018 (attached as .config)
compiler: arm-linux-gnueabi-gcc (GCC) 11.2.0
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
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d5d9f7ac58ea1041375a028f143ca5784693ea86
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout d5d9f7ac58ea1041375a028f143ca5784693ea86
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=arm
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>
All warnings (new ones prefixed by >>):
arch/arm/mach-ixp4xx/common-pci.c:94:5: warning: no previous prototype for 'ixp4xx_pci_read_errata' [-Wmissing-prototypes]
94 | int ixp4xx_pci_read_errata(u32 addr, u32 cmd, u32* data)
| ^~~~~~~~~~~~~~~~~~~~~~
arch/arm/mach-ixp4xx/common-pci.c:121:5: warning: no previous prototype for 'ixp4xx_pci_read_no_errata' [-Wmissing-prototypes]
121 | int ixp4xx_pci_read_no_errata(u32 addr, u32 cmd, u32* data)
| ^~~~~~~~~~~~~~~~~~~~~~~~~
>> arch/arm/mach-ixp4xx/common-pci.c:143:5: warning: no previous prototype for 'ixp4xx_pci_write' [-Wmissing-prototypes]
143 | int ixp4xx_pci_write(u32 addr, u32 cmd, u32 data)
| ^~~~~~~~~~~~~~~~
Kconfig warnings: (for reference only)
WARNING: unmet direct dependencies detected for QCOM_SCM
Depends on (ARM || ARM64) && HAVE_ARM_SMCCC
Selected by
- ARM_QCOM_SPM_CPUIDLE && CPU_IDLE && (ARM || ARM64) && (ARCH_QCOM || COMPILE_TEST && !ARM64 && MMU
vim +/ixp4xx_pci_write +143 arch/arm/mach-ixp4xx/common-pci.c
^1da177e4c3f41 Linus Torvalds 2005-04-16 93
^1da177e4c3f41 Linus Torvalds 2005-04-16 @94 int ixp4xx_pci_read_errata(u32 addr, u32 cmd, u32* data)
^1da177e4c3f41 Linus Torvalds 2005-04-16 95 {
^1da177e4c3f41 Linus Torvalds 2005-04-16 96 unsigned long flags;
^1da177e4c3f41 Linus Torvalds 2005-04-16 97 int retval = 0;
^1da177e4c3f41 Linus Torvalds 2005-04-16 98 int i;
^1da177e4c3f41 Linus Torvalds 2005-04-16 99
bd31b85960a7fc Thomas Gleixner 2009-07-03 100 raw_spin_lock_irqsave(&ixp4xx_pci_lock, flags);
^1da177e4c3f41 Linus Torvalds 2005-04-16 101
^1da177e4c3f41 Linus Torvalds 2005-04-16 102 *PCI_NP_AD = addr;
^1da177e4c3f41 Linus Torvalds 2005-04-16 103
^1da177e4c3f41 Linus Torvalds 2005-04-16 104 /*
^1da177e4c3f41 Linus Torvalds 2005-04-16 105 * PCI workaround - only works if NP PCI space reads have
^1da177e4c3f41 Linus Torvalds 2005-04-16 106 * no side effects!!! Read 8 times. last one will be good.
^1da177e4c3f41 Linus Torvalds 2005-04-16 107 */
^1da177e4c3f41 Linus Torvalds 2005-04-16 108 for (i = 0; i < 8; i++) {
^1da177e4c3f41 Linus Torvalds 2005-04-16 109 *PCI_NP_CBE = cmd;
^1da177e4c3f41 Linus Torvalds 2005-04-16 110 *data = *PCI_NP_RDATA;
^1da177e4c3f41 Linus Torvalds 2005-04-16 111 *data = *PCI_NP_RDATA;
^1da177e4c3f41 Linus Torvalds 2005-04-16 112 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 113
^1da177e4c3f41 Linus Torvalds 2005-04-16 114 if(check_master_abort())
^1da177e4c3f41 Linus Torvalds 2005-04-16 115 retval = 1;
^1da177e4c3f41 Linus Torvalds 2005-04-16 116
bd31b85960a7fc Thomas Gleixner 2009-07-03 117 raw_spin_unlock_irqrestore(&ixp4xx_pci_lock, flags);
^1da177e4c3f41 Linus Torvalds 2005-04-16 118 return retval;
^1da177e4c3f41 Linus Torvalds 2005-04-16 119 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 120
^1da177e4c3f41 Linus Torvalds 2005-04-16 121 int ixp4xx_pci_read_no_errata(u32 addr, u32 cmd, u32* data)
^1da177e4c3f41 Linus Torvalds 2005-04-16 122 {
^1da177e4c3f41 Linus Torvalds 2005-04-16 123 unsigned long flags;
^1da177e4c3f41 Linus Torvalds 2005-04-16 124 int retval = 0;
^1da177e4c3f41 Linus Torvalds 2005-04-16 125
bd31b85960a7fc Thomas Gleixner 2009-07-03 126 raw_spin_lock_irqsave(&ixp4xx_pci_lock, flags);
^1da177e4c3f41 Linus Torvalds 2005-04-16 127
^1da177e4c3f41 Linus Torvalds 2005-04-16 128 *PCI_NP_AD = addr;
^1da177e4c3f41 Linus Torvalds 2005-04-16 129
^1da177e4c3f41 Linus Torvalds 2005-04-16 130 /* set up and execute the read */
^1da177e4c3f41 Linus Torvalds 2005-04-16 131 *PCI_NP_CBE = cmd;
^1da177e4c3f41 Linus Torvalds 2005-04-16 132
^1da177e4c3f41 Linus Torvalds 2005-04-16 133 /* the result of the read is now in NP_RDATA */
^1da177e4c3f41 Linus Torvalds 2005-04-16 134 *data = *PCI_NP_RDATA;
^1da177e4c3f41 Linus Torvalds 2005-04-16 135
^1da177e4c3f41 Linus Torvalds 2005-04-16 136 if(check_master_abort())
^1da177e4c3f41 Linus Torvalds 2005-04-16 137 retval = 1;
^1da177e4c3f41 Linus Torvalds 2005-04-16 138
bd31b85960a7fc Thomas Gleixner 2009-07-03 139 raw_spin_unlock_irqrestore(&ixp4xx_pci_lock, flags);
^1da177e4c3f41 Linus Torvalds 2005-04-16 140 return retval;
^1da177e4c3f41 Linus Torvalds 2005-04-16 141 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 142
^1da177e4c3f41 Linus Torvalds 2005-04-16 @143 int ixp4xx_pci_write(u32 addr, u32 cmd, u32 data)
^1da177e4c3f41 Linus Torvalds 2005-04-16 144 {
^1da177e4c3f41 Linus Torvalds 2005-04-16 145 unsigned long flags;
^1da177e4c3f41 Linus Torvalds 2005-04-16 146 int retval = 0;
^1da177e4c3f41 Linus Torvalds 2005-04-16 147
bd31b85960a7fc Thomas Gleixner 2009-07-03 148 raw_spin_lock_irqsave(&ixp4xx_pci_lock, flags);
^1da177e4c3f41 Linus Torvalds 2005-04-16 149
^1da177e4c3f41 Linus Torvalds 2005-04-16 150 *PCI_NP_AD = addr;
^1da177e4c3f41 Linus Torvalds 2005-04-16 151
^1da177e4c3f41 Linus Torvalds 2005-04-16 152 /* set up the write */
^1da177e4c3f41 Linus Torvalds 2005-04-16 153 *PCI_NP_CBE = cmd;
^1da177e4c3f41 Linus Torvalds 2005-04-16 154
^1da177e4c3f41 Linus Torvalds 2005-04-16 155 /* execute the write by writing to NP_WDATA */
^1da177e4c3f41 Linus Torvalds 2005-04-16 156 *PCI_NP_WDATA = data;
^1da177e4c3f41 Linus Torvalds 2005-04-16 157
^1da177e4c3f41 Linus Torvalds 2005-04-16 158 if(check_master_abort())
^1da177e4c3f41 Linus Torvalds 2005-04-16 159 retval = 1;
^1da177e4c3f41 Linus Torvalds 2005-04-16 160
bd31b85960a7fc Thomas Gleixner 2009-07-03 161 raw_spin_unlock_irqrestore(&ixp4xx_pci_lock, flags);
^1da177e4c3f41 Linus Torvalds 2005-04-16 162 return retval;
^1da177e4c3f41 Linus Torvalds 2005-04-16 163 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 164
:::::: The code at line 143 was first introduced by commit
:::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2
:::::: TO: Linus Torvalds <torvalds@...970.osdl.org>
:::::: CC: Linus Torvalds <torvalds@...970.osdl.org>
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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