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Message-ID: <202211220028.dGDnx2oE-lkp@intel.com>
Date: Tue, 22 Nov 2022 00:16:29 +0800
From: kernel test robot <lkp@...el.com>
To: "Maciej W. Rozycki" <macro@...am.me.uk>
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
linux-kernel@...r.kernel.org, Palmer Dabbelt <palmer@...osinc.com>,
Arnd Bergmann <arnd@...db.de>
Subject: drivers/scsi/qlogicfas408.c:111:4: warning: performing pointer
arithmetic on a null pointer has undefined behavior
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: eb7081409f94a9a8608593d0fb63a1aa3d6f95d8
commit: 9cc205e3c17d5716da7ebb7fa0c985555e95d009 RISC-V: Make port I/O string accessors actually work
date: 6 weeks ago
config: riscv-randconfig-r022-20221120
compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project bbe6bd724a6335e497c7edaed191d37a828d0390)
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://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9cc205e3c17d5716da7ebb7fa0c985555e95d009
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 9cc205e3c17d5716da7ebb7fa0c985555e95d009
# 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=riscv SHELL=/bin/bash
If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@...el.com>
All warnings (new ones prefixed by >>):
~~~~~~~~~~ ^
In file included from drivers/scsi/qlogicfas408.c:43:
In file included from include/linux/blkdev.h:9:
In file included from include/linux/blk_types.h:10:
In file included from include/linux/bvec.h:10:
In file included from include/linux/highmem.h:11:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/riscv/include/asm/io.h:136:
include/asm-generic/io.h:751:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
insw(addr, buffer, count);
^~~~~~~~~~~~~~~~~~~~~~~~~
arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
#define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
~~~~~~~~~~ ^
In file included from drivers/scsi/qlogicfas408.c:43:
In file included from include/linux/blkdev.h:9:
In file included from include/linux/blk_types.h:10:
In file included from include/linux/bvec.h:10:
In file included from include/linux/highmem.h:11:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/riscv/include/asm/io.h:136:
include/asm-generic/io.h:759:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
insl(addr, buffer, count);
^~~~~~~~~~~~~~~~~~~~~~~~~
arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
#define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
~~~~~~~~~~ ^
In file included from drivers/scsi/qlogicfas408.c:43:
In file included from include/linux/blkdev.h:9:
In file included from include/linux/blk_types.h:10:
In file included from include/linux/bvec.h:10:
In file included from include/linux/highmem.h:11:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/riscv/include/asm/io.h:136:
include/asm-generic/io.h:768:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
outsb(addr, buffer, count);
^~~~~~~~~~~~~~~~~~~~~~~~~~
arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
#define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
~~~~~~~~~~ ^
In file included from drivers/scsi/qlogicfas408.c:43:
In file included from include/linux/blkdev.h:9:
In file included from include/linux/blk_types.h:10:
In file included from include/linux/bvec.h:10:
In file included from include/linux/highmem.h:11:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/riscv/include/asm/io.h:136:
include/asm-generic/io.h:777:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
outsw(addr, buffer, count);
^~~~~~~~~~~~~~~~~~~~~~~~~~
arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
#define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
~~~~~~~~~~ ^
In file included from drivers/scsi/qlogicfas408.c:43:
In file included from include/linux/blkdev.h:9:
In file included from include/linux/blk_types.h:10:
In file included from include/linux/bvec.h:10:
In file included from include/linux/highmem.h:11:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/riscv/include/asm/io.h:136:
include/asm-generic/io.h:786:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
outsl(addr, buffer, count);
^~~~~~~~~~~~~~~~~~~~~~~~~~
arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
#define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
~~~~~~~~~~ ^
In file included from drivers/scsi/qlogicfas408.c:43:
In file included from include/linux/blkdev.h:9:
In file included from include/linux/blk_types.h:10:
In file included from include/linux/bvec.h:10:
In file included from include/linux/highmem.h:11:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/riscv/include/asm/io.h:136:
include/asm-generic/io.h:1134:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
~~~~~~~~~~ ^
>> drivers/scsi/qlogicfas408.c:111:4: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
insl(qbase + 4, request, 32);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
#define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
~~~~~~~~~~ ^
drivers/scsi/qlogicfas408.c:118:5: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
insl(qbase + 4, request, 21);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
#define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
~~~~~~~~~~ ^
drivers/scsi/qlogicfas408.c:123:4: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
insl(qbase + 4, request, 11);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
#define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
~~~~~~~~~~ ^
drivers/scsi/qlogicfas408.c:148:4: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
outsl(qbase + 4, request, 32);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
#define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
~~~~~~~~~~ ^
drivers/scsi/qlogicfas408.c:154:5: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
outsl(qbase + 4, request, 21);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
#define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
~~~~~~~~~~ ^
drivers/scsi/qlogicfas408.c:159:4: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
outsl(qbase + 4, request, 10);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
#define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
~~~~~~~~~~ ^
19 warnings generated.
--
include/asm-generic/io.h:743:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
insb(addr, buffer, count);
^~~~~~~~~~~~~~~~~~~~~~~~~
arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
#define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
~~~~~~~~~~ ^
In file included from drivers/scsi/pcmcia/aha152x_core.c:3:
In file included from drivers/scsi/aha152x.c:228:
In file included from arch/riscv/include/asm/irq.h:10:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/riscv/include/asm/io.h:136:
include/asm-generic/io.h:751:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
insw(addr, buffer, count);
^~~~~~~~~~~~~~~~~~~~~~~~~
arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
#define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
~~~~~~~~~~ ^
In file included from drivers/scsi/pcmcia/aha152x_core.c:3:
In file included from drivers/scsi/aha152x.c:228:
In file included from arch/riscv/include/asm/irq.h:10:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/riscv/include/asm/io.h:136:
include/asm-generic/io.h:759:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
insl(addr, buffer, count);
^~~~~~~~~~~~~~~~~~~~~~~~~
arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
#define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
~~~~~~~~~~ ^
In file included from drivers/scsi/pcmcia/aha152x_core.c:3:
In file included from drivers/scsi/aha152x.c:228:
In file included from arch/riscv/include/asm/irq.h:10:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/riscv/include/asm/io.h:136:
include/asm-generic/io.h:768:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
outsb(addr, buffer, count);
^~~~~~~~~~~~~~~~~~~~~~~~~~
arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
#define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
~~~~~~~~~~ ^
In file included from drivers/scsi/pcmcia/aha152x_core.c:3:
In file included from drivers/scsi/aha152x.c:228:
In file included from arch/riscv/include/asm/irq.h:10:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/riscv/include/asm/io.h:136:
include/asm-generic/io.h:777:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
outsw(addr, buffer, count);
^~~~~~~~~~~~~~~~~~~~~~~~~~
arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
#define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
~~~~~~~~~~ ^
In file included from drivers/scsi/pcmcia/aha152x_core.c:3:
In file included from drivers/scsi/aha152x.c:228:
In file included from arch/riscv/include/asm/irq.h:10:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/riscv/include/asm/io.h:136:
include/asm-generic/io.h:786:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
outsl(addr, buffer, count);
^~~~~~~~~~~~~~~~~~~~~~~~~~
arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
#define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
~~~~~~~~~~ ^
In file included from drivers/scsi/pcmcia/aha152x_core.c:3:
In file included from drivers/scsi/aha152x.c:228:
In file included from arch/riscv/include/asm/irq.h:10:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/riscv/include/asm/io.h:136:
include/asm-generic/io.h:1134:55: 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/scsi/pcmcia/aha152x_core.c:3:
>> drivers/scsi/aha152x.c:2058:6: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
insw(DATAPORT, acp->ptr, data_count);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
#define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
~~~~~~~~~~ ^
In file included from drivers/scsi/pcmcia/aha152x_core.c:3:
drivers/scsi/aha152x.c:2164:4: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
outsw(DATAPORT, acp->ptr, data_count);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
#define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
~~~~~~~~~~ ^
15 warnings generated.
vim +111 drivers/scsi/qlogicfas408.c
^1da177e4c3f41 Linus Torvalds 2005-04-16 95
^1da177e4c3f41 Linus Torvalds 2005-04-16 96 /*
^1da177e4c3f41 Linus Torvalds 2005-04-16 97 * Do a pseudo-dma tranfer
^1da177e4c3f41 Linus Torvalds 2005-04-16 98 */
^1da177e4c3f41 Linus Torvalds 2005-04-16 99
5751a9eaf18700 Hannes Reinecke 2021-04-27 100 static int ql_pdma(struct qlogicfas408_priv *priv, int phase, char *request,
5751a9eaf18700 Hannes Reinecke 2021-04-27 101 int reqlen)
^1da177e4c3f41 Linus Torvalds 2005-04-16 102 {
^1da177e4c3f41 Linus Torvalds 2005-04-16 103 int j;
^1da177e4c3f41 Linus Torvalds 2005-04-16 104 int qbase = priv->qbase;
^1da177e4c3f41 Linus Torvalds 2005-04-16 105 j = 0;
^1da177e4c3f41 Linus Torvalds 2005-04-16 106 if (phase & 1) { /* in */
^1da177e4c3f41 Linus Torvalds 2005-04-16 107 #if QL_TURBO_PDMA
^1da177e4c3f41 Linus Torvalds 2005-04-16 108 rtrc(4)
^1da177e4c3f41 Linus Torvalds 2005-04-16 109 /* empty fifo in large chunks */
^1da177e4c3f41 Linus Torvalds 2005-04-16 110 if (reqlen >= 128 && (inb(qbase + 8) & 2)) { /* full */
^1da177e4c3f41 Linus Torvalds 2005-04-16 @111 insl(qbase + 4, request, 32);
^1da177e4c3f41 Linus Torvalds 2005-04-16 112 reqlen -= 128;
^1da177e4c3f41 Linus Torvalds 2005-04-16 113 request += 128;
^1da177e4c3f41 Linus Torvalds 2005-04-16 114 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 115 while (reqlen >= 84 && !(j & 0xc0)) /* 2/3 */
^1da177e4c3f41 Linus Torvalds 2005-04-16 116 if ((j = inb(qbase + 8)) & 4)
^1da177e4c3f41 Linus Torvalds 2005-04-16 117 {
^1da177e4c3f41 Linus Torvalds 2005-04-16 118 insl(qbase + 4, request, 21);
^1da177e4c3f41 Linus Torvalds 2005-04-16 119 reqlen -= 84;
^1da177e4c3f41 Linus Torvalds 2005-04-16 120 request += 84;
^1da177e4c3f41 Linus Torvalds 2005-04-16 121 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 122 if (reqlen >= 44 && (inb(qbase + 8) & 8)) { /* 1/3 */
^1da177e4c3f41 Linus Torvalds 2005-04-16 123 insl(qbase + 4, request, 11);
^1da177e4c3f41 Linus Torvalds 2005-04-16 124 reqlen -= 44;
^1da177e4c3f41 Linus Torvalds 2005-04-16 125 request += 44;
^1da177e4c3f41 Linus Torvalds 2005-04-16 126 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 127 #endif
^1da177e4c3f41 Linus Torvalds 2005-04-16 128 /* until both empty and int (or until reclen is 0) */
^1da177e4c3f41 Linus Torvalds 2005-04-16 129 rtrc(7)
^1da177e4c3f41 Linus Torvalds 2005-04-16 130 j = 0;
^1da177e4c3f41 Linus Torvalds 2005-04-16 131 while (reqlen && !((j & 0x10) && (j & 0xc0)))
^1da177e4c3f41 Linus Torvalds 2005-04-16 132 {
^1da177e4c3f41 Linus Torvalds 2005-04-16 133 /* while bytes to receive and not empty */
^1da177e4c3f41 Linus Torvalds 2005-04-16 134 j &= 0xc0;
^1da177e4c3f41 Linus Torvalds 2005-04-16 135 while (reqlen && !((j = inb(qbase + 8)) & 0x10))
^1da177e4c3f41 Linus Torvalds 2005-04-16 136 {
^1da177e4c3f41 Linus Torvalds 2005-04-16 137 *request++ = inb(qbase + 4);
^1da177e4c3f41 Linus Torvalds 2005-04-16 138 reqlen--;
^1da177e4c3f41 Linus Torvalds 2005-04-16 139 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 140 if (j & 0x10)
^1da177e4c3f41 Linus Torvalds 2005-04-16 141 j = inb(qbase + 8);
^1da177e4c3f41 Linus Torvalds 2005-04-16 142
^1da177e4c3f41 Linus Torvalds 2005-04-16 143 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 144 } else { /* out */
^1da177e4c3f41 Linus Torvalds 2005-04-16 145 #if QL_TURBO_PDMA
^1da177e4c3f41 Linus Torvalds 2005-04-16 146 rtrc(4)
^1da177e4c3f41 Linus Torvalds 2005-04-16 147 if (reqlen >= 128 && inb(qbase + 8) & 0x10) { /* empty */
^1da177e4c3f41 Linus Torvalds 2005-04-16 148 outsl(qbase + 4, request, 32);
^1da177e4c3f41 Linus Torvalds 2005-04-16 149 reqlen -= 128;
^1da177e4c3f41 Linus Torvalds 2005-04-16 150 request += 128;
^1da177e4c3f41 Linus Torvalds 2005-04-16 151 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 152 while (reqlen >= 84 && !(j & 0xc0)) /* 1/3 */
^1da177e4c3f41 Linus Torvalds 2005-04-16 153 if (!((j = inb(qbase + 8)) & 8)) {
^1da177e4c3f41 Linus Torvalds 2005-04-16 154 outsl(qbase + 4, request, 21);
^1da177e4c3f41 Linus Torvalds 2005-04-16 155 reqlen -= 84;
^1da177e4c3f41 Linus Torvalds 2005-04-16 156 request += 84;
^1da177e4c3f41 Linus Torvalds 2005-04-16 157 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 158 if (reqlen >= 40 && !(inb(qbase + 8) & 4)) { /* 2/3 */
^1da177e4c3f41 Linus Torvalds 2005-04-16 159 outsl(qbase + 4, request, 10);
^1da177e4c3f41 Linus Torvalds 2005-04-16 160 reqlen -= 40;
^1da177e4c3f41 Linus Torvalds 2005-04-16 161 request += 40;
^1da177e4c3f41 Linus Torvalds 2005-04-16 162 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 163 #endif
^1da177e4c3f41 Linus Torvalds 2005-04-16 164 /* until full and int (or until reclen is 0) */
^1da177e4c3f41 Linus Torvalds 2005-04-16 165 rtrc(7)
^1da177e4c3f41 Linus Torvalds 2005-04-16 166 j = 0;
^1da177e4c3f41 Linus Torvalds 2005-04-16 167 while (reqlen && !((j & 2) && (j & 0xc0))) {
^1da177e4c3f41 Linus Torvalds 2005-04-16 168 /* while bytes to send and not full */
^1da177e4c3f41 Linus Torvalds 2005-04-16 169 while (reqlen && !((j = inb(qbase + 8)) & 2))
^1da177e4c3f41 Linus Torvalds 2005-04-16 170 {
^1da177e4c3f41 Linus Torvalds 2005-04-16 171 outb(*request++, qbase + 4);
^1da177e4c3f41 Linus Torvalds 2005-04-16 172 reqlen--;
^1da177e4c3f41 Linus Torvalds 2005-04-16 173 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 174 if (j & 2)
^1da177e4c3f41 Linus Torvalds 2005-04-16 175 j = inb(qbase + 8);
^1da177e4c3f41 Linus Torvalds 2005-04-16 176 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 177 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 178 /* maybe return reqlen */
^1da177e4c3f41 Linus Torvalds 2005-04-16 179 return inb(qbase + 8) & 0xc0;
^1da177e4c3f41 Linus Torvalds 2005-04-16 180 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 181
:::::: The code at line 111 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
https://01.org/lkp
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