tree: https://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic.git master head: 3c4fcc2648569c3fe573849f9254c8c3499ec648 commit: 6ce9e34a28174293927e0b51acc4d30a130a565a [4/6] iomap: add missing const to ioread*/iowrite addr arg config: mips-allyesconfig (attached as .config) compiler: mips-linux-gnu-gcc (Debian 8.2.0-11) 8.2.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout 6ce9e34a28174293927e0b51acc4d30a130a565a # save the attached .config to linux build tree GCC_VERSION=8.2.0 make.cross ARCH=mips All warnings (new ones prefixed by >>): lib/iomap.c: In function 'ioread8_rep': >> lib/iomap.c:198:48: warning: passing argument 1 of 'mmio_insb' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers] IO_COND(addr, insb(port,dst,count), mmio_insb(addr, dst, count)); ^~~~ lib/iomap.c:54:3: note: in definition of macro 'IO_COND' is_mmio; \ ^~~~~~~ lib/iomap.c:146:44: note: expected 'void *' but argument is of type 'const void *' static inline void mmio_insb(void __iomem *addr, u8 *dst, int count) ~~~~~~~~~~~~~~^~~~ lib/iomap.c: In function 'ioread16_rep': >> lib/iomap.c:202:48: warning: passing argument 1 of 'mmio_insw' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers] IO_COND(addr, insw(port,dst,count), mmio_insw(addr, dst, count)); ^~~~ lib/iomap.c:54:3: note: in definition of macro 'IO_COND' is_mmio; \ ^~~~~~~ lib/iomap.c:154:44: note: expected 'void *' but argument is of type 'const void *' static inline void mmio_insw(void __iomem *addr, u16 *dst, int count) ~~~~~~~~~~~~~~^~~~ lib/iomap.c: In function 'ioread32_rep': >> lib/iomap.c:206:48: warning: passing argument 1 of 'mmio_insl' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers] IO_COND(addr, insl(port,dst,count), mmio_insl(addr, dst, count)); ^~~~ lib/iomap.c:54:3: note: in definition of macro 'IO_COND' is_mmio; \ ^~~~~~~ lib/iomap.c:162:44: note: expected 'void *' but argument is of type 'const void *' static inline void mmio_insl(void __iomem *addr, u32 *dst, int count) ~~~~~~~~~~~~~~^~~~ vim +198 lib/iomap.c 6cbf0c70 Linus Torvalds 2007-05-04 47 ^1da177e Linus Torvalds 2005-04-16 48 /* ^1da177e Linus Torvalds 2005-04-16 49 * Ugly macros are a way of life. ^1da177e Linus Torvalds 2005-04-16 50 */ ^1da177e Linus Torvalds 2005-04-16 51 #define IO_COND(addr, is_pio, is_mmio) do { \ ^1da177e Linus Torvalds 2005-04-16 52 unsigned long port = (unsigned long __force)addr; \ 6cbf0c70 Linus Torvalds 2007-05-04 53 if (port >= PIO_RESERVED) { \ 6cbf0c70 Linus Torvalds 2007-05-04 @54 is_mmio; \ 6cbf0c70 Linus Torvalds 2007-05-04 55 } else if (port > PIO_OFFSET) { \ ^1da177e Linus Torvalds 2005-04-16 56 port &= PIO_MASK; \ ^1da177e Linus Torvalds 2005-04-16 57 is_pio; \ 6cbf0c70 Linus Torvalds 2007-05-04 58 } else \ 6cbf0c70 Linus Torvalds 2007-05-04 59 bad_io_access(port, #is_pio ); \ ^1da177e Linus Torvalds 2005-04-16 60 } while (0) ^1da177e Linus Torvalds 2005-04-16 61 34ba8a5c Linus Torvalds 2006-11-11 62 #ifndef pio_read16be 34ba8a5c Linus Torvalds 2006-11-11 63 #define pio_read16be(port) swab16(inw(port)) 34ba8a5c Linus Torvalds 2006-11-11 64 #define pio_read32be(port) swab32(inl(port)) 34ba8a5c Linus Torvalds 2006-11-11 65 #endif 34ba8a5c Linus Torvalds 2006-11-11 66 34ba8a5c Linus Torvalds 2006-11-11 67 #ifndef mmio_read16be 34ba8a5c Linus Torvalds 2006-11-11 68 #define mmio_read16be(addr) be16_to_cpu(__raw_readw(addr)) 34ba8a5c Linus Torvalds 2006-11-11 69 #define mmio_read32be(addr) be32_to_cpu(__raw_readl(addr)) 34ba8a5c Linus Torvalds 2006-11-11 70 #endif 34ba8a5c Linus Torvalds 2006-11-11 71 6ce9e34a Hugo Lefeuvre 2019-02-18 72 unsigned int ioread8(const void __iomem *addr) ^1da177e Linus Torvalds 2005-04-16 73 { ^1da177e Linus Torvalds 2005-04-16 74 IO_COND(addr, return inb(port), return readb(addr)); 6cbf0c70 Linus Torvalds 2007-05-04 75 return 0xff; ^1da177e Linus Torvalds 2005-04-16 76 } 6ce9e34a Hugo Lefeuvre 2019-02-18 77 unsigned int ioread16(const void __iomem *addr) ^1da177e Linus Torvalds 2005-04-16 78 { ^1da177e Linus Torvalds 2005-04-16 79 IO_COND(addr, return inw(port), return readw(addr)); 6cbf0c70 Linus Torvalds 2007-05-04 80 return 0xffff; ^1da177e Linus Torvalds 2005-04-16 81 } 6ce9e34a Hugo Lefeuvre 2019-02-18 82 unsigned int ioread16be(const void __iomem *addr) dae409a2 James Bottomley 2005-04-16 83 { 34ba8a5c Linus Torvalds 2006-11-11 84 IO_COND(addr, return pio_read16be(port), return mmio_read16be(addr)); 6cbf0c70 Linus Torvalds 2007-05-04 85 return 0xffff; dae409a2 James Bottomley 2005-04-16 86 } 6ce9e34a Hugo Lefeuvre 2019-02-18 87 unsigned int ioread32(const void __iomem *addr) ^1da177e Linus Torvalds 2005-04-16 88 { ^1da177e Linus Torvalds 2005-04-16 89 IO_COND(addr, return inl(port), return readl(addr)); 6cbf0c70 Linus Torvalds 2007-05-04 90 return 0xffffffff; ^1da177e Linus Torvalds 2005-04-16 91 } 6ce9e34a Hugo Lefeuvre 2019-02-18 92 unsigned int ioread32be(const void __iomem *addr) dae409a2 James Bottomley 2005-04-16 93 { 34ba8a5c Linus Torvalds 2006-11-11 94 IO_COND(addr, return pio_read32be(port), return mmio_read32be(addr)); 6cbf0c70 Linus Torvalds 2007-05-04 95 return 0xffffffff; dae409a2 James Bottomley 2005-04-16 96 } ^1da177e Linus Torvalds 2005-04-16 97 EXPORT_SYMBOL(ioread8); ^1da177e Linus Torvalds 2005-04-16 98 EXPORT_SYMBOL(ioread16); dae409a2 James Bottomley 2005-04-16 99 EXPORT_SYMBOL(ioread16be); ^1da177e Linus Torvalds 2005-04-16 100 EXPORT_SYMBOL(ioread32); dae409a2 James Bottomley 2005-04-16 101 EXPORT_SYMBOL(ioread32be); ^1da177e Linus Torvalds 2005-04-16 102 34ba8a5c Linus Torvalds 2006-11-11 103 #ifndef pio_write16be 34ba8a5c Linus Torvalds 2006-11-11 104 #define pio_write16be(val,port) outw(swab16(val),port) 34ba8a5c Linus Torvalds 2006-11-11 105 #define pio_write32be(val,port) outl(swab32(val),port) 34ba8a5c Linus Torvalds 2006-11-11 106 #endif 34ba8a5c Linus Torvalds 2006-11-11 107 34ba8a5c Linus Torvalds 2006-11-11 108 #ifndef mmio_write16be 34ba8a5c Linus Torvalds 2006-11-11 109 #define mmio_write16be(val,port) __raw_writew(be16_to_cpu(val),port) 34ba8a5c Linus Torvalds 2006-11-11 110 #define mmio_write32be(val,port) __raw_writel(be32_to_cpu(val),port) 34ba8a5c Linus Torvalds 2006-11-11 111 #endif 34ba8a5c Linus Torvalds 2006-11-11 112 9f741cb8 Harvey Harrison 2008-02-08 113 void iowrite8(u8 val, void __iomem *addr) ^1da177e Linus Torvalds 2005-04-16 114 { ^1da177e Linus Torvalds 2005-04-16 115 IO_COND(addr, outb(val,port), writeb(val, addr)); ^1da177e Linus Torvalds 2005-04-16 116 } 9f741cb8 Harvey Harrison 2008-02-08 117 void iowrite16(u16 val, void __iomem *addr) ^1da177e Linus Torvalds 2005-04-16 118 { ^1da177e Linus Torvalds 2005-04-16 119 IO_COND(addr, outw(val,port), writew(val, addr)); ^1da177e Linus Torvalds 2005-04-16 120 } 9f741cb8 Harvey Harrison 2008-02-08 121 void iowrite16be(u16 val, void __iomem *addr) dae409a2 James Bottomley 2005-04-16 122 { 34ba8a5c Linus Torvalds 2006-11-11 123 IO_COND(addr, pio_write16be(val,port), mmio_write16be(val, addr)); dae409a2 James Bottomley 2005-04-16 124 } 9f741cb8 Harvey Harrison 2008-02-08 125 void iowrite32(u32 val, void __iomem *addr) ^1da177e Linus Torvalds 2005-04-16 126 { ^1da177e Linus Torvalds 2005-04-16 127 IO_COND(addr, outl(val,port), writel(val, addr)); ^1da177e Linus Torvalds 2005-04-16 128 } 9f741cb8 Harvey Harrison 2008-02-08 129 void iowrite32be(u32 val, void __iomem *addr) dae409a2 James Bottomley 2005-04-16 130 { 34ba8a5c Linus Torvalds 2006-11-11 131 IO_COND(addr, pio_write32be(val,port), mmio_write32be(val, addr)); dae409a2 James Bottomley 2005-04-16 132 } ^1da177e Linus Torvalds 2005-04-16 133 EXPORT_SYMBOL(iowrite8); ^1da177e Linus Torvalds 2005-04-16 134 EXPORT_SYMBOL(iowrite16); dae409a2 James Bottomley 2005-04-16 135 EXPORT_SYMBOL(iowrite16be); ^1da177e Linus Torvalds 2005-04-16 136 EXPORT_SYMBOL(iowrite32); dae409a2 James Bottomley 2005-04-16 137 EXPORT_SYMBOL(iowrite32be); ^1da177e Linus Torvalds 2005-04-16 138 ^1da177e Linus Torvalds 2005-04-16 139 /* ^1da177e Linus Torvalds 2005-04-16 140 * These are the "repeat MMIO read/write" functions. ^1da177e Linus Torvalds 2005-04-16 141 * Note the "__raw" accesses, since we don't want to ^1da177e Linus Torvalds 2005-04-16 142 * convert to CPU byte order. We write in "IO byte ^1da177e Linus Torvalds 2005-04-16 143 * order" (we also don't have IO barriers). ^1da177e Linus Torvalds 2005-04-16 144 */ 34ba8a5c Linus Torvalds 2006-11-11 145 #ifndef mmio_insb ^1da177e Linus Torvalds 2005-04-16 146 static inline void mmio_insb(void __iomem *addr, u8 *dst, int count) ^1da177e Linus Torvalds 2005-04-16 147 { ^1da177e Linus Torvalds 2005-04-16 148 while (--count >= 0) { ^1da177e Linus Torvalds 2005-04-16 149 u8 data = __raw_readb(addr); ^1da177e Linus Torvalds 2005-04-16 150 *dst = data; ^1da177e Linus Torvalds 2005-04-16 151 dst++; ^1da177e Linus Torvalds 2005-04-16 152 } ^1da177e Linus Torvalds 2005-04-16 153 } ^1da177e Linus Torvalds 2005-04-16 154 static inline void mmio_insw(void __iomem *addr, u16 *dst, int count) ^1da177e Linus Torvalds 2005-04-16 155 { ^1da177e Linus Torvalds 2005-04-16 156 while (--count >= 0) { ^1da177e Linus Torvalds 2005-04-16 157 u16 data = __raw_readw(addr); ^1da177e Linus Torvalds 2005-04-16 158 *dst = data; ^1da177e Linus Torvalds 2005-04-16 159 dst++; ^1da177e Linus Torvalds 2005-04-16 160 } ^1da177e Linus Torvalds 2005-04-16 161 } ^1da177e Linus Torvalds 2005-04-16 162 static inline void mmio_insl(void __iomem *addr, u32 *dst, int count) ^1da177e Linus Torvalds 2005-04-16 163 { ^1da177e Linus Torvalds 2005-04-16 164 while (--count >= 0) { ^1da177e Linus Torvalds 2005-04-16 165 u32 data = __raw_readl(addr); ^1da177e Linus Torvalds 2005-04-16 166 *dst = data; ^1da177e Linus Torvalds 2005-04-16 167 dst++; ^1da177e Linus Torvalds 2005-04-16 168 } ^1da177e Linus Torvalds 2005-04-16 169 } 34ba8a5c Linus Torvalds 2006-11-11 170 #endif ^1da177e Linus Torvalds 2005-04-16 171 34ba8a5c Linus Torvalds 2006-11-11 172 #ifndef mmio_outsb ^1da177e Linus Torvalds 2005-04-16 173 static inline void mmio_outsb(void __iomem *addr, const u8 *src, int count) ^1da177e Linus Torvalds 2005-04-16 174 { ^1da177e Linus Torvalds 2005-04-16 175 while (--count >= 0) { ^1da177e Linus Torvalds 2005-04-16 176 __raw_writeb(*src, addr); ^1da177e Linus Torvalds 2005-04-16 177 src++; ^1da177e Linus Torvalds 2005-04-16 178 } ^1da177e Linus Torvalds 2005-04-16 179 } ^1da177e Linus Torvalds 2005-04-16 180 static inline void mmio_outsw(void __iomem *addr, const u16 *src, int count) ^1da177e Linus Torvalds 2005-04-16 181 { ^1da177e Linus Torvalds 2005-04-16 182 while (--count >= 0) { ^1da177e Linus Torvalds 2005-04-16 183 __raw_writew(*src, addr); ^1da177e Linus Torvalds 2005-04-16 184 src++; ^1da177e Linus Torvalds 2005-04-16 185 } ^1da177e Linus Torvalds 2005-04-16 186 } ^1da177e Linus Torvalds 2005-04-16 187 static inline void mmio_outsl(void __iomem *addr, const u32 *src, int count) ^1da177e Linus Torvalds 2005-04-16 188 { ^1da177e Linus Torvalds 2005-04-16 189 while (--count >= 0) { ^1da177e Linus Torvalds 2005-04-16 190 __raw_writel(*src, addr); ^1da177e Linus Torvalds 2005-04-16 191 src++; ^1da177e Linus Torvalds 2005-04-16 192 } ^1da177e Linus Torvalds 2005-04-16 193 } 34ba8a5c Linus Torvalds 2006-11-11 194 #endif ^1da177e Linus Torvalds 2005-04-16 195 6ce9e34a Hugo Lefeuvre 2019-02-18 196 void ioread8_rep(const void __iomem *addr, void *dst, unsigned long count) ^1da177e Linus Torvalds 2005-04-16 197 { ^1da177e Linus Torvalds 2005-04-16 @198 IO_COND(addr, insb(port,dst,count), mmio_insb(addr, dst, count)); ^1da177e Linus Torvalds 2005-04-16 199 } 6ce9e34a Hugo Lefeuvre 2019-02-18 200 void ioread16_rep(const void __iomem *addr, void *dst, unsigned long count) ^1da177e Linus Torvalds 2005-04-16 201 { ^1da177e Linus Torvalds 2005-04-16 @202 IO_COND(addr, insw(port,dst,count), mmio_insw(addr, dst, count)); ^1da177e Linus Torvalds 2005-04-16 203 } 6ce9e34a Hugo Lefeuvre 2019-02-18 204 void ioread32_rep(const void __iomem *addr, void *dst, unsigned long count) ^1da177e Linus Torvalds 2005-04-16 205 { ^1da177e Linus Torvalds 2005-04-16 @206 IO_COND(addr, insl(port,dst,count), mmio_insl(addr, dst, count)); ^1da177e Linus Torvalds 2005-04-16 207 } ^1da177e Linus Torvalds 2005-04-16 208 EXPORT_SYMBOL(ioread8_rep); ^1da177e Linus Torvalds 2005-04-16 209 EXPORT_SYMBOL(ioread16_rep); ^1da177e Linus Torvalds 2005-04-16 210 EXPORT_SYMBOL(ioread32_rep); ^1da177e Linus Torvalds 2005-04-16 211 :::::: The code at line 198 was first introduced by commit :::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2 :::::: TO: Linus Torvalds <torvalds@xxxxxxxxxxxxxxx> :::::: CC: Linus Torvalds <torvalds@xxxxxxxxxxxxxxx> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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