Re: [PATCH] usb: cdns3: Adds missing __iomem markers
From: kernel test robot
Date: Mon Dec 14 2020 - 10:37:39 EST
Hi Pawel,
I love your patch! Perhaps something to improve:
[auto build test WARNING on next-20201211]
[cannot apply to peter.chen-usb/ci-for-usb-next v5.10 v5.10-rc7 v5.10-rc6 v5.10]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]
url: https://github.com/0day-ci/linux/commits/Pawel-Laszczak/usb-cdns3-Adds-missing-__iomem-markers/20201214-205353
base: 3cc2bd440f2171f093b3a8480a4b54d8c270ed38
config: riscv-allmodconfig (attached as .config)
compiler: riscv64-linux-gcc (GCC) 9.3.0
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://github.com/0day-ci/linux/commit/315bfcf1e0604de6ecfc1856cf5820876390f16c
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Pawel-Laszczak/usb-cdns3-Adds-missing-__iomem-markers/20201214-205353
git checkout 315bfcf1e0604de6ecfc1856cf5820876390f16c
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=riscv
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>
All warnings (new ones prefixed by >>):
In file included from arch/riscv/include/asm/io.h:23,
from include/linux/io.h:13,
from include/linux/irq.h:20,
from include/asm-generic/hardirq.h:17,
from ./arch/riscv/include/generated/asm/hardirq.h:1,
from include/linux/hardirq.h:10,
from include/linux/interrupt.h:11,
from drivers/usb/cdns3/drd.c:13:
drivers/usb/cdns3/drd.c: In function 'cdns_otg_disable_irq':
drivers/usb/cdns3/drd.c:159:31: error: dereferencing pointer to incomplete type 'struct cdns_otg_irq_reg'
159 | writel(0, &cdns->otg_irq_regs->ien);
| ^~
arch/riscv/include/asm/mmio.h:93:76: note: in definition of macro 'writel_cpu'
93 | #define writel_cpu(v, c) ((void)__raw_writel((__force u32)cpu_to_le32(v), (c)))
| ^
drivers/usb/cdns3/drd.c:159:2: note: in expansion of macro 'writel'
159 | writel(0, &cdns->otg_irq_regs->ien);
| ^~~~~~
drivers/usb/cdns3/drd.c: In function 'cdns_drd_init':
drivers/usb/cdns3/drd.c:409:22: error: assignment to 'struct cdns_otg_irq_reg *' from incompatible pointer type 'struct cdns_otg_irq_regs *' [-Werror=incompatible-pointer-types]
409 | cdns->otg_irq_regs = (struct cdns_otg_irq_regs __iomem *)
| ^
In file included from include/linux/byteorder/little_endian.h:5,
from arch/riscv/include/uapi/asm/byteorder.h:10,
from include/asm-generic/bitops/le.h:6,
from arch/riscv/include/asm/bitops.h:202,
from include/linux/bitops.h:32,
from include/linux/kernel.h:11,
from drivers/usb/cdns3/drd.c:12:
>> drivers/usb/cdns3/drd.c:421:33: warning: passing argument 1 of '__raw_readl' makes pointer from integer without a cast [-Wint-conversion]
421 | if (readl(cdns->otg_cdnsp_regs->did) == OTG_CDNSP_DID) {
| ~~~~~~~~~~~~~~~~~~~~^~~~~
| |
| __le32 {aka unsigned int}
include/uapi/linux/byteorder/little_endian.h:34:51: note: in definition of macro '__le32_to_cpu'
34 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
| ^
arch/riscv/include/asm/mmio.h:140:47: note: in expansion of macro 'readl_cpu'
140 | #define readl(c) ({ u32 __v; __io_br(); __v = readl_cpu(c); __io_ar(__v); __v; })
| ^~~~~~~~~
drivers/usb/cdns3/drd.c:421:7: note: in expansion of macro 'readl'
421 | if (readl(cdns->otg_cdnsp_regs->did) == OTG_CDNSP_DID) {
| ^~~~~
In file included from arch/riscv/include/asm/io.h:23,
from include/linux/io.h:13,
from include/linux/irq.h:20,
from include/asm-generic/hardirq.h:17,
from ./arch/riscv/include/generated/asm/hardirq.h:1,
from include/linux/hardirq.h:10,
from include/linux/interrupt.h:11,
from drivers/usb/cdns3/drd.c:13:
arch/riscv/include/asm/mmio.h:63:60: note: expected 'const volatile void *' but argument is of type '__le32' {aka 'unsigned int'}
63 | static inline u32 __raw_readl(const volatile void __iomem *addr)
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~
drivers/usb/cdns3/drd.c:422:23: error: assignment to 'struct cdns_otg_irq_reg *' from incompatible pointer type 'struct cdns_otg_irq_regs *' [-Werror=incompatible-pointer-types]
422 | cdns->otg_irq_regs = (struct cdns_otg_irq_regs __iomem *)
| ^
drivers/usb/cdns3/drd.c:426:23: error: assignment to 'struct cdns_otg_irq_reg *' from incompatible pointer type 'struct cdns_otg_irq_regs *' [-Werror=incompatible-pointer-types]
426 | cdns->otg_irq_regs = (struct cdns_otg_irq_regs __iomem *)
| ^
cc1: some warnings being treated as errors
vim +/__raw_readl +421 drivers/usb/cdns3/drd.c
383
384 int cdns_drd_init(struct cdns *cdns)
385 {
386 void __iomem *regs;
387 u32 state;
388 int ret;
389
390 regs = devm_ioremap_resource(cdns->dev, &cdns->otg_res);
391 if (IS_ERR(regs))
392 return PTR_ERR(regs);
393
394 /* Detection of DRD version. Controller has been released
395 * in three versions. All are very similar and are software compatible,
396 * but they have same changes in register maps.
397 * The first register in oldest version is command register and it's
398 * read only. Driver should read 0 from it. On the other hand, in v1
399 * and v2 the first register contains device ID number which is not
400 * set to 0. Driver uses this fact to detect the proper version of
401 * controller.
402 */
403 cdns->otg_v0_regs = regs;
404 if (!readl(&cdns->otg_v0_regs->cmd)) {
405 cdns->version = CDNS3_CONTROLLER_V0;
406 cdns->otg_v1_regs = NULL;
407 cdns->otg_cdnsp_regs = NULL;
408 cdns->otg_regs = regs;
409 cdns->otg_irq_regs = (struct cdns_otg_irq_regs __iomem *)
410 &cdns->otg_v0_regs->ien;
411 writel(1, &cdns->otg_v0_regs->simulate);
412 dev_dbg(cdns->dev, "DRD version v0 (%08x)\n",
413 readl(&cdns->otg_v0_regs->version));
414 } else {
415 cdns->otg_v0_regs = NULL;
416 cdns->otg_v1_regs = regs;
417 cdns->otg_cdnsp_regs = regs;
418
419 cdns->otg_regs = (void __iomem *)&cdns->otg_v1_regs->cmd;
420
> 421 if (readl(cdns->otg_cdnsp_regs->did) == OTG_CDNSP_DID) {
422 cdns->otg_irq_regs = (struct cdns_otg_irq_regs __iomem *)
423 &cdns->otg_cdnsp_regs->ien;
424 cdns->version = CDNSP_CONTROLLER_V2;
425 } else {
426 cdns->otg_irq_regs = (struct cdns_otg_irq_regs __iomem *)
427 &cdns->otg_v1_regs->ien;
428 writel(1, &cdns->otg_v1_regs->simulate);
429 cdns->version = CDNS3_CONTROLLER_V1;
430 }
431
432 dev_dbg(cdns->dev, "DRD version v1 (ID: %08x, rev: %08x)\n",
433 readl(&cdns->otg_v1_regs->did),
434 readl(&cdns->otg_v1_regs->rid));
435 }
436
437 state = OTGSTS_STRAP(readl(&cdns->otg_regs->sts));
438
439 /* Update dr_mode according to STRAP configuration. */
440 cdns->dr_mode = USB_DR_MODE_OTG;
441
442 if ((cdns->version == CDNSP_CONTROLLER_V2 &&
443 state == OTGSTS_CDNSP_STRAP_HOST) ||
444 (cdns->version != CDNSP_CONTROLLER_V2 &&
445 state == OTGSTS_STRAP_HOST)) {
446 dev_dbg(cdns->dev, "Controller strapped to HOST\n");
447 cdns->dr_mode = USB_DR_MODE_HOST;
448 } else if ((cdns->version == CDNSP_CONTROLLER_V2 &&
449 state == OTGSTS_CDNSP_STRAP_GADGET) ||
450 (cdns->version != CDNSP_CONTROLLER_V2 &&
451 state == OTGSTS_STRAP_GADGET)) {
452 dev_dbg(cdns->dev, "Controller strapped to PERIPHERAL\n");
453 cdns->dr_mode = USB_DR_MODE_PERIPHERAL;
454 }
455
456 ret = devm_request_threaded_irq(cdns->dev, cdns->otg_irq,
457 cdns_drd_irq,
458 cdns_drd_thread_irq,
459 IRQF_SHARED,
460 dev_name(cdns->dev), cdns);
461 if (ret) {
462 dev_err(cdns->dev, "couldn't get otg_irq\n");
463 return ret;
464 }
465
466 state = readl(&cdns->otg_regs->sts);
467 if (OTGSTS_OTG_NRDY(state)) {
468 dev_err(cdns->dev, "Cadence USB3 OTG device not ready\n");
469 return -ENODEV;
470 }
471
472 return 0;
473 }
474
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
Attachment:
.config.gz
Description: application/gzip