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Message-ID: <202011041450.cZhM2aWP-lkp@intel.com>
Date: Wed, 4 Nov 2020 14:43:34 +0800
From: kernel test robot <lkp@...el.com>
To: Perry Yuan <Perry.Yuan@...l.com>, hdegoede@...hat.com,
mgross@...ux.intel.com, mjg59@...f.ucam.org, pali@...nel.org
Cc: kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
platform-driver-x86@...r.kernel.org,
perry_yuan <Perry.Yuan@...l.com>,
Limonciello Mario <Mario.Limonciello@...l.com>
Subject: Re: [PATCH] platform/x86: dell-privacy: Add support for new privacy
driver
Hi Perry,
Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on linus/master]
[also build test WARNING on v5.10-rc2]
[cannot apply to next-20201103]
[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/Perry-Yuan/platform-x86-dell-privacy-Add-support-for-new-privacy-driver/20201103-205721
base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git b7cbaf59f62f8ab8f157698f9e31642bff525bd0
config: x86_64-randconfig-m001-20201104 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-15) 9.3.0
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>
smatch warnings:
drivers/platform/x86/dell-wmi.c:414 dell_wmi_notify() warn: inconsistent indenting
drivers/platform/x86/dell-laptop.c:2207 dell_init() warn: inconsistent indenting
drivers/platform/x86/dell-laptop.c:2289 dell_exit() warn: inconsistent indenting
drivers/platform/x86/dell-laptop.c:2291 dell_exit() warn: curly braces intended?
vim +414 drivers/platform/x86/dell-wmi.c
83fc44c32ad8b8b Pali Rohár 2014-11-11 377
bff589be59c5092 Andy Lutomirski 2015-11-25 378 static void dell_wmi_notify(struct wmi_device *wdev,
bff589be59c5092 Andy Lutomirski 2015-11-25 379 union acpi_object *obj)
0b3f6109f0c9ff9 Matthew Garrett 2009-01-09 380 {
00ebbeb39b70072 Andy Lutomirski 2017-08-01 381 struct dell_wmi_priv *priv = dev_get_drvdata(&wdev->dev);
83fc44c32ad8b8b Pali Rohár 2014-11-11 382 u16 *buffer_entry, *buffer_end;
bff589be59c5092 Andy Lutomirski 2015-11-25 383 acpi_size buffer_size;
83fc44c32ad8b8b Pali Rohár 2014-11-11 384 int len, i;
0b3f6109f0c9ff9 Matthew Garrett 2009-01-09 385
83fc44c32ad8b8b Pali Rohár 2014-11-11 386 if (obj->type != ACPI_TYPE_BUFFER) {
83fc44c32ad8b8b Pali Rohár 2014-11-11 387 pr_warn("bad response type %x\n", obj->type);
5ea2559726b7862 Rezwanul Kabir 2009-11-02 388 return;
5ea2559726b7862 Rezwanul Kabir 2009-11-02 389 }
5ea2559726b7862 Rezwanul Kabir 2009-11-02 390
83fc44c32ad8b8b Pali Rohár 2014-11-11 391 pr_debug("Received WMI event (%*ph)\n",
83fc44c32ad8b8b Pali Rohár 2014-11-11 392 obj->buffer.length, obj->buffer.pointer);
83fc44c32ad8b8b Pali Rohár 2014-11-11 393
83fc44c32ad8b8b Pali Rohár 2014-11-11 394 buffer_entry = (u16 *)obj->buffer.pointer;
83fc44c32ad8b8b Pali Rohár 2014-11-11 395 buffer_size = obj->buffer.length/2;
83fc44c32ad8b8b Pali Rohár 2014-11-11 396 buffer_end = buffer_entry + buffer_size;
83fc44c32ad8b8b Pali Rohár 2014-11-11 397
481fe5be821c3d0 Pali Rohár 2016-01-04 398 /*
481fe5be821c3d0 Pali Rohár 2016-01-04 399 * BIOS/ACPI on devices with WMI interface version 0 does not clear
481fe5be821c3d0 Pali Rohár 2016-01-04 400 * buffer before filling it. So next time when BIOS/ACPI send WMI event
481fe5be821c3d0 Pali Rohár 2016-01-04 401 * which is smaller as previous then it contains garbage in buffer from
481fe5be821c3d0 Pali Rohár 2016-01-04 402 * previous event.
481fe5be821c3d0 Pali Rohár 2016-01-04 403 *
481fe5be821c3d0 Pali Rohár 2016-01-04 404 * BIOS/ACPI on devices with WMI interface version 1 clears buffer and
481fe5be821c3d0 Pali Rohár 2016-01-04 405 * sometimes send more events in buffer at one call.
481fe5be821c3d0 Pali Rohár 2016-01-04 406 *
481fe5be821c3d0 Pali Rohár 2016-01-04 407 * So to prevent reading garbage from buffer we will process only first
481fe5be821c3d0 Pali Rohár 2016-01-04 408 * one event on devices with WMI interface version 0.
481fe5be821c3d0 Pali Rohár 2016-01-04 409 */
00ebbeb39b70072 Andy Lutomirski 2017-08-01 410 if (priv->interface_version == 0 && buffer_entry < buffer_end)
481fe5be821c3d0 Pali Rohár 2016-01-04 411 if (buffer_end > buffer_entry + buffer_entry[0] + 1)
481fe5be821c3d0 Pali Rohár 2016-01-04 412 buffer_end = buffer_entry + buffer_entry[0] + 1;
481fe5be821c3d0 Pali Rohár 2016-01-04 413
83fc44c32ad8b8b Pali Rohár 2014-11-11 @414 while (buffer_entry < buffer_end) {
83fc44c32ad8b8b Pali Rohár 2014-11-11 415
83fc44c32ad8b8b Pali Rohár 2014-11-11 416 len = buffer_entry[0];
83fc44c32ad8b8b Pali Rohár 2014-11-11 417 if (len == 0)
83fc44c32ad8b8b Pali Rohár 2014-11-11 418 break;
83fc44c32ad8b8b Pali Rohár 2014-11-11 419
83fc44c32ad8b8b Pali Rohár 2014-11-11 420 len++;
83fc44c32ad8b8b Pali Rohár 2014-11-11 421
83fc44c32ad8b8b Pali Rohár 2014-11-11 422 if (buffer_entry + len > buffer_end) {
83fc44c32ad8b8b Pali Rohár 2014-11-11 423 pr_warn("Invalid length of WMI event\n");
83fc44c32ad8b8b Pali Rohár 2014-11-11 424 break;
0b3f6109f0c9ff9 Matthew Garrett 2009-01-09 425 }
83fc44c32ad8b8b Pali Rohár 2014-11-11 426
83fc44c32ad8b8b Pali Rohár 2014-11-11 427 pr_debug("Process buffer (%*ph)\n", len*2, buffer_entry);
83fc44c32ad8b8b Pali Rohár 2014-11-11 428
83fc44c32ad8b8b Pali Rohár 2014-11-11 429 switch (buffer_entry[1]) {
e075b3c898e4055 Pali Rohár 2016-06-15 430 case 0x0000: /* One key pressed or event occurred */
e075b3c898e4055 Pali Rohár 2016-06-15 431 if (len > 2)
0c026c361be1734 Y Paritcher 2020-06-10 432 dell_wmi_process_key(wdev, buffer_entry[1],
bff589be59c5092 Andy Lutomirski 2015-11-25 433 buffer_entry[2]);
83fc44c32ad8b8b Pali Rohár 2014-11-11 434 break;
e075b3c898e4055 Pali Rohár 2016-06-15 435 case 0x0010: /* Sequence of keys pressed */
e075b3c898e4055 Pali Rohár 2016-06-15 436 case 0x0011: /* Sequence of events occurred */
83fc44c32ad8b8b Pali Rohár 2014-11-11 437 for (i = 2; i < len; ++i)
bff589be59c5092 Andy Lutomirski 2015-11-25 438 dell_wmi_process_key(wdev, buffer_entry[1],
e075b3c898e4055 Pali Rohár 2016-06-15 439 buffer_entry[i]);
83fc44c32ad8b8b Pali Rohár 2014-11-11 440 break;
cee9f60d7ca58d8 perry_yuan 2020-11-03 441 case 0x0012:
cee9f60d7ca58d8 perry_yuan 2020-11-03 442 #if IS_ENABLED(CONFIG_DELL_PRIVACY)
cee9f60d7ca58d8 perry_yuan 2020-11-03 443 if (dell_privacy_valid()) {
cee9f60d7ca58d8 perry_yuan 2020-11-03 444 dell_privacy_process_event(buffer_entry[1], buffer_entry[3],
cee9f60d7ca58d8 perry_yuan 2020-11-03 445 buffer_entry[4]);
cee9f60d7ca58d8 perry_yuan 2020-11-03 446 } else {
cee9f60d7ca58d8 perry_yuan 2020-11-03 447 if (len > 2)
cee9f60d7ca58d8 perry_yuan 2020-11-03 448 dell_wmi_process_key(wdev, buffer_entry[1], buffer_entry[2]);
cee9f60d7ca58d8 perry_yuan 2020-11-03 449 }
cee9f60d7ca58d8 perry_yuan 2020-11-03 450 #else
cee9f60d7ca58d8 perry_yuan 2020-11-03 451 /* Extended data is currently ignored */
cee9f60d7ca58d8 perry_yuan 2020-11-03 452 if (len > 2)
cee9f60d7ca58d8 perry_yuan 2020-11-03 453 dell_wmi_process_key(wdev, buffer_entry[1], buffer_entry[2]);
cee9f60d7ca58d8 perry_yuan 2020-11-03 454 #endif
cee9f60d7ca58d8 perry_yuan 2020-11-03 455 break;
e075b3c898e4055 Pali Rohár 2016-06-15 456 default: /* Unknown event */
83fc44c32ad8b8b Pali Rohár 2014-11-11 457 pr_info("Unknown WMI event type 0x%x\n",
83fc44c32ad8b8b Pali Rohár 2014-11-11 458 (int)buffer_entry[1]);
83fc44c32ad8b8b Pali Rohár 2014-11-11 459 break;
0b3f6109f0c9ff9 Matthew Garrett 2009-01-09 460 }
83fc44c32ad8b8b Pali Rohár 2014-11-11 461
83fc44c32ad8b8b Pali Rohár 2014-11-11 462 buffer_entry += len;
83fc44c32ad8b8b Pali Rohár 2014-11-11 463
83fc44c32ad8b8b Pali Rohár 2014-11-11 464 }
83fc44c32ad8b8b Pali Rohár 2014-11-11 465
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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