Re: [PATCH] USB: atm: speedtch: do not use assignment in if condition

From: kernel test robot
Date: Sat Oct 05 2024 - 06:12:35 EST

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In reply to: kernel test robot: "Re: [PATCH] USB: atm: speedtch: do not use assignment in if condition"
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Hi Manuel,

kernel test robot noticed the following build errors:

[auto build test ERROR on usb/usb-testing]
[also build test ERROR on usb/usb-next usb/usb-linus linus/master v6.12-rc1 next-20241004]
[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#_base_tree_information]

url: https://github.com/intel-lab-lkp/linux/commits/Manuel-Quintero-F/USB-atm-speedtch-do-not-use-assignment-in-if-condition/20241004-113643
base: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing
patch link: https://lore.kernel.org/r/20241004030512.2036-1-sakunix%40yahoo.com
patch subject: [PATCH] USB: atm: speedtch: do not use assignment in if condition
config: hexagon-allmodconfig (https://download.01.org/0day-ci/archive/20241005/202410051833.7M7dq3rD-lkp@xxxxxxxxx/config)
compiler: clang version 20.0.0git (https://github.com/llvm/llvm-project fef3566a25ff0e34fb87339ba5e13eca17cec00f)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241005/202410051833.7M7dq3rD-lkp@xxxxxxxxx/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202410051833.7M7dq3rD-lkp@xxxxxxxxx/

All errors (new ones prefixed by >>):

In file included from drivers/usb/atm/speedtch.c:26:
In file included from drivers/usb/atm/usbatm.h:14:
In file included from include/linux/atmdev.h:9:
In file included from include/linux/net.h:24:
In file included from include/linux/mm.h:2213:
include/linux/vmstat.h:518:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
518 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_"
| ~~~~~~~~~~~ ^ ~~~
In file included from drivers/usb/atm/speedtch.c:26:
In file included from drivers/usb/atm/usbatm.h:14:
In file included from include/linux/atmdev.h:11:
In file included from include/linux/skbuff.h:17:
In file included from include/linux/bvec.h:10:
In file included from include/linux/highmem.h:12:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/hexagon/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:14:
In file included from arch/hexagon/include/asm/io.h:328:
include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
548 | val = __raw_readb(PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
561 | val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
| ~~~~~~~~~~ ^
include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
| ^
In file included from drivers/usb/atm/speedtch.c:26:
In file included from drivers/usb/atm/usbatm.h:14:
In file included from include/linux/atmdev.h:11:
In file included from include/linux/skbuff.h:17:
In file included from include/linux/bvec.h:10:
In file included from include/linux/highmem.h:12:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/hexagon/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:14:
In file included from arch/hexagon/include/asm/io.h:328:
include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
574 | val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
| ~~~~~~~~~~ ^
include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
| ^
In file included from drivers/usb/atm/speedtch.c:26:
In file included from drivers/usb/atm/usbatm.h:14:
In file included from include/linux/atmdev.h:11:
In file included from include/linux/skbuff.h:17:
In file included from include/linux/bvec.h:10:
In file included from include/linux/highmem.h:12:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/hexagon/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:14:
In file included from arch/hexagon/include/asm/io.h:328:
include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
585 | __raw_writeb(value, PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
595 | __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
605 | __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
>> drivers/usb/atm/speedtch.c:329:2: error: expected ')'
329 | if (ret < 0) {
| ^
drivers/usb/atm/speedtch.c:327:25: note: to match this '('
327 | ret = usb_set_interface(usb_dev, INTERFACE_DATA, instance->params.altsetting
| ^
7 warnings and 1 error generated.

Kconfig warnings: (for reference only)
WARNING: unmet direct dependencies detected for MODVERSIONS
Depends on [n]: MODULES [=y] && !COMPILE_TEST [=y]
Selected by [y]:
- RANDSTRUCT_FULL [=y] && (CC_HAS_RANDSTRUCT [=y] || GCC_PLUGINS [=n]) && MODULES [=y]
WARNING: unmet direct dependencies detected for GET_FREE_REGION
Depends on [n]: SPARSEMEM [=n]
Selected by [m]:
- RESOURCE_KUNIT_TEST [=m] && RUNTIME_TESTING_MENU [=y] && KUNIT [=m]

vim +329 drivers/usb/atm/speedtch.c

229
230 static int speedtch_upload_firmware(struct speedtch_instance_data *instance,
231 const struct firmware *fw1,
232 const struct firmware *fw2)
233 {
234 unsigned char *buffer;
235 struct usbatm_data *usbatm = instance->usbatm;
236 struct usb_device *usb_dev = usbatm->usb_dev;
237 int actual_length;
238 int ret = 0;
239 int offset;
240
241 usb_dbg(usbatm, "%s entered\n", __func__);
242
243 buffer = (unsigned char *)__get_free_page(GFP_KERNEL);
244 if (!buffer) {
245 ret = -ENOMEM;
246 usb_dbg(usbatm, "%s: no memory for buffer!\n", __func__);
247 goto out;
248 }
249
250 if (!usb_ifnum_to_if(usb_dev, 2)) {
251 ret = -ENODEV;
252 usb_dbg(usbatm, "%s: interface not found!\n", __func__);
253 goto out_free;
254 }
255
256 /* URB 7 */
257 if (dl_512_first) { /* some modems need a read before writing the firmware */
258 ret = usb_bulk_msg(usb_dev, usb_rcvbulkpipe(usb_dev, ENDPOINT_FIRMWARE),
259 buffer, 0x200, &actual_length, 2000);
260
261 if (ret < 0 && ret != -ETIMEDOUT)
262 usb_warn(usbatm, "%s: read BLOCK0 from modem failed (%d)!\n", __func__, ret);
263 else
264 usb_dbg(usbatm, "%s: BLOCK0 downloaded (%d bytes)\n", __func__, ret);
265 }
266
267 /* URB 8 : both leds are static green */
268 for (offset = 0; offset < fw1->size; offset += PAGE_SIZE) {
269 int thislen = min_t(int, PAGE_SIZE, fw1->size - offset);
270 memcpy(buffer, fw1->data + offset, thislen);
271
272 ret = usb_bulk_msg(usb_dev, usb_sndbulkpipe(usb_dev, ENDPOINT_FIRMWARE),
273 buffer, thislen, &actual_length, DATA_TIMEOUT);
274
275 if (ret < 0) {
276 usb_err(usbatm, "%s: write BLOCK1 to modem failed (%d)!\n", __func__, ret);
277 goto out_free;
278 }
279 usb_dbg(usbatm, "%s: BLOCK1 uploaded (%zu bytes)\n", __func__, fw1->size);
280 }
281
282 /* USB led blinking green, ADSL led off */
283
284 /* URB 11 */
285 ret = usb_bulk_msg(usb_dev, usb_rcvbulkpipe(usb_dev, ENDPOINT_FIRMWARE),
286 buffer, 0x200, &actual_length, DATA_TIMEOUT);
287
288 if (ret < 0) {
289 usb_err(usbatm, "%s: read BLOCK2 from modem failed (%d)!\n", __func__, ret);
290 goto out_free;
291 }
292 usb_dbg(usbatm, "%s: BLOCK2 downloaded (%d bytes)\n", __func__, actual_length);
293
294 /* URBs 12 to 139 - USB led blinking green, ADSL led off */
295 for (offset = 0; offset < fw2->size; offset += PAGE_SIZE) {
296 int thislen = min_t(int, PAGE_SIZE, fw2->size - offset);
297 memcpy(buffer, fw2->data + offset, thislen);
298
299 ret = usb_bulk_msg(usb_dev, usb_sndbulkpipe(usb_dev, ENDPOINT_FIRMWARE),
300 buffer, thislen, &actual_length, DATA_TIMEOUT);
301
302 if (ret < 0) {
303 usb_err(usbatm, "%s: write BLOCK3 to modem failed (%d)!\n", __func__, ret);
304 goto out_free;
305 }
306 }
307 usb_dbg(usbatm, "%s: BLOCK3 uploaded (%zu bytes)\n", __func__, fw2->size);
308
309 /* USB led static green, ADSL led static red */
310
311 /* URB 142 */
312 ret = usb_bulk_msg(usb_dev, usb_rcvbulkpipe(usb_dev, ENDPOINT_FIRMWARE),
313 buffer, 0x200, &actual_length, DATA_TIMEOUT);
314
315 if (ret < 0) {
316 usb_err(usbatm, "%s: read BLOCK4 from modem failed (%d)!\n", __func__, ret);
317 goto out_free;
318 }
319
320 /* success */
321 usb_dbg(usbatm, "%s: BLOCK4 downloaded (%d bytes)\n", __func__, actual_length);
322
323 /* Delay to allow firmware to start up. We can do this here
324 because we're in our own kernel thread anyway. */
325 msleep_interruptible(1000);
326
327 ret = usb_set_interface(usb_dev, INTERFACE_DATA, instance->params.altsetting
328
> 329 if (ret < 0) {
330 usb_err(usbatm, "%s: setting interface to %d failed (%d)!\n", __func__, instance->params.altsetting, ret);
331 goto out_free;
332 }
333
334 /* Enable software buffering, if requested */
335 if (sw_buffering)
336 speedtch_set_swbuff(instance, 1);
337
338 /* Magic spell; don't ask us what this does */
339 speedtch_test_sequence(instance);
340
341 ret = 0;
342
343 out_free:
344 free_page((unsigned long)buffer);
345 out:
346 return ret;
347 }
348

--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki

Next message: Björn Töpel: "Re: [PATCH] selftests: Do not skip BPF selftests by default"
Previous message: kernel test robot: "arch/x86/mm/pat/memtype.c:128:39: error: use of undeclared identifier 'PG_arch_2'; did you mean 'PG_arch_1'?"
In reply to: kernel test robot: "Re: [PATCH] USB: atm: speedtch: do not use assignment in if condition"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]