drivers/net/can/cc770/cc770_isa.c:276:25: sparse: sparse: incorrect type in argument 1 (different address spaces)

From: kernel test robot
Date: Sat Aug 22 2020 - 00:22:30 EST

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tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: f873db9acd3c92d4741bc3676c9eb511b2f9a6f6
commit: 670d0a4b10704667765f7d18f7592993d02783aa sparse: use identifiers to define address spaces
date: 9 weeks ago
config: openrisc-randconfig-s031-20200822 (attached as .config)
compiler: or1k-linux-gcc (GCC) 9.3.0
reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# apt-get install sparse
# sparse version: v0.6.2-191-g10164920-dirty
git checkout 670d0a4b10704667765f7d18f7592993d02783aa
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=openrisc

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>

sparse warnings: (new ones prefixed by >>)

>> drivers/net/can/cc770/cc770_isa.c:276:25: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void *addr @@ got void [noderef] __iomem *[assigned] base @@
drivers/net/can/cc770/cc770_isa.c:276:25: sparse: expected void *addr
>> drivers/net/can/cc770/cc770_isa.c:276:25: sparse: got void [noderef] __iomem *[assigned] base
>> drivers/net/can/cc770/cc770_isa.c:295:29: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void *addr @@ got void [noderef] __iomem *reg_base @@
drivers/net/can/cc770/cc770_isa.c:295:29: sparse: expected void *addr
>> drivers/net/can/cc770/cc770_isa.c:295:29: sparse: got void [noderef] __iomem *reg_base
--
>> drivers/net/can/cc770/cc770_platform.c:226:17: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void *addr @@ got void [noderef] __iomem *[assigned] base @@
drivers/net/can/cc770/cc770_platform.c:226:17: sparse: expected void *addr
>> drivers/net/can/cc770/cc770_platform.c:226:17: sparse: got void [noderef] __iomem *[assigned] base
>> drivers/net/can/cc770/cc770_platform.c:240:21: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void *addr @@ got void [noderef] __iomem *reg_base @@
drivers/net/can/cc770/cc770_platform.c:240:21: sparse: expected void *addr
>> drivers/net/can/cc770/cc770_platform.c:240:21: sparse: got void [noderef] __iomem *reg_base

# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=670d0a4b10704667765f7d18f7592993d02783aa
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 670d0a4b10704667765f7d18f7592993d02783aa
vim +276 drivers/net/can/cc770/cc770_isa.c

edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 160
3c8ac0f2ad53a96 Bill Pemberton 2012-12-03 161 static int cc770_isa_probe(struct platform_device *pdev)
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 162 {
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 163 struct net_device *dev;
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 164 struct cc770_priv *priv;
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 165 void __iomem *base = NULL;
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 166 int iosize = CC770_IOSIZE;
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 167 int idx = pdev->id;
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 168 int err;
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 169 u32 clktmp;
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 170
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 171 dev_dbg(&pdev->dev, "probing idx=%d: port=%#lx, mem=%#lx, irq=%d\n",
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 172 idx, port[idx], mem[idx], irq[idx]);
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 173 if (mem[idx]) {
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 174 if (!request_mem_region(mem[idx], iosize, KBUILD_MODNAME)) {
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 175 err = -EBUSY;
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 176 goto exit;
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 177 }
4bdc0d676a64314 Christoph Hellwig 2020-01-06 178 base = ioremap(mem[idx], iosize);
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 179 if (!base) {
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 180 err = -ENOMEM;
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 181 goto exit_release;
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 182 }
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 183 } else {
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 184 if (indirect[idx] > 0 ||
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 185 (indirect[idx] == -1 && indirect[0] > 0))
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 186 iosize = CC770_IOSIZE_INDIRECT;
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 187 if (!request_region(port[idx], iosize, KBUILD_MODNAME)) {
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 188 err = -EBUSY;
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 189 goto exit;
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 190 }
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 191 }
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 192
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 193 dev = alloc_cc770dev(0);
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 194 if (!dev) {
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 195 err = -ENOMEM;
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 196 goto exit_unmap;
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 197 }
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 198 priv = netdev_priv(dev);
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 199
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 200 dev->irq = irq[idx];
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 201 priv->irq_flags = IRQF_SHARED;
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 202 if (mem[idx]) {
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 203 priv->reg_base = base;
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 204 dev->base_addr = mem[idx];
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 205 priv->read_reg = cc770_isa_mem_read_reg;
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 206 priv->write_reg = cc770_isa_mem_write_reg;
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 207 } else {
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 208 priv->reg_base = (void __iomem *)port[idx];
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 209 dev->base_addr = port[idx];
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 210
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 211 if (iosize == CC770_IOSIZE_INDIRECT) {
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 212 priv->read_reg = cc770_isa_port_read_reg_indirect;
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 213 priv->write_reg = cc770_isa_port_write_reg_indirect;
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 214 } else {
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 215 priv->read_reg = cc770_isa_port_read_reg;
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 216 priv->write_reg = cc770_isa_port_write_reg;
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 217 }
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 218 }
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 219
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 220 if (clk[idx])
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 221 clktmp = clk[idx];
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 222 else if (clk[0])
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 223 clktmp = clk[0];
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 224 else
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 225 clktmp = CLK_DEFAULT;
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 226 priv->can.clock.freq = clktmp;
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 227
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 228 if (cir[idx] != 0xff) {
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 229 priv->cpu_interface = cir[idx];
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 230 } else if (cir[0] != 0xff) {
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 231 priv->cpu_interface = cir[0];
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 232 } else {
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 233 /* The system clock may not exceed 10 MHz */
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 234 if (clktmp > 10000000) {
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 235 priv->cpu_interface |= CPUIF_DSC;
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 236 clktmp /= 2;
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 237 }
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 238 /* The memory clock may not exceed 8 MHz */
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 239 if (clktmp > 8000000)
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 240 priv->cpu_interface |= CPUIF_DMC;
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 241 }
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 242
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 243 if (priv->cpu_interface & CPUIF_DSC)
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 244 priv->can.clock.freq /= 2;
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 245
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 246 if (bcr[idx] != 0xff)
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 247 priv->bus_config = bcr[idx];
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 248 else if (bcr[0] != 0xff)
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 249 priv->bus_config = bcr[0];
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 250 else
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 251 priv->bus_config = BCR_DEFAULT;
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 252
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 253 if (cor[idx] != 0xff)
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 254 priv->clkout = cor[idx];
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 255 else if (cor[0] != 0xff)
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 256 priv->clkout = cor[0];
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 257 else
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 258 priv->clkout = COR_DEFAULT;
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 259
00e4bbc8cd7efac Jingoo Han 2013-05-23 260 platform_set_drvdata(pdev, dev);
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 261 SET_NETDEV_DEV(dev, &pdev->dev);
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 262
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 263 err = register_cc770dev(dev);
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 264 if (err) {
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 265 dev_err(&pdev->dev,
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 266 "couldn't register device (err=%d)\n", err);
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 267 goto exit_unmap;
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 268 }
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 269
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 270 dev_info(&pdev->dev, "device registered (reg_base=0x%p, irq=%d)\n",
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 271 priv->reg_base, dev->irq);
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 272 return 0;
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 273
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 274 exit_unmap:
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 275 if (mem[idx])
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 @276 iounmap(base);
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 277 exit_release:
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 278 if (mem[idx])
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 279 release_mem_region(mem[idx], iosize);
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 280 else
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 281 release_region(port[idx], iosize);
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 282 exit:
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 283 return err;
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 284 }
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 285
3c8ac0f2ad53a96 Bill Pemberton 2012-12-03 286 static int cc770_isa_remove(struct platform_device *pdev)
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 287 {
00e4bbc8cd7efac Jingoo Han 2013-05-23 288 struct net_device *dev = platform_get_drvdata(pdev);
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 289 struct cc770_priv *priv = netdev_priv(dev);
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 290 int idx = pdev->id;
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 291
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 292 unregister_cc770dev(dev);
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 293
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 294 if (mem[idx]) {
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 @295 iounmap(priv->reg_base);
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 296 release_mem_region(mem[idx], CC770_IOSIZE);
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 297 } else {
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 298 if (priv->read_reg == cc770_isa_port_read_reg_indirect)
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 299 release_region(port[idx], CC770_IOSIZE_INDIRECT);
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 300 else
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 301 release_region(port[idx], CC770_IOSIZE);
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 302 }
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 303 free_cc770dev(dev);
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 304
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 305 return 0;
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 306 }
edd2c26ffb7742b Wolfgang Grandegger 2011-11-30 307

:::::: The code at line 276 was first introduced by commit
:::::: edd2c26ffb7742bf0d3bd324694d220281844a01 can: cc770: add legacy ISA bus driver for the CC770 and AN82527

:::::: TO: Wolfgang Grandegger <wg@xxxxxxxxxxxxxx>
:::::: CC: David S. Miller <davem@xxxxxxxxxxxxx>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx

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