Hi Bhumika, [auto build test WARNING on balbi-usb/next] [also build test WARNING on v4.14-rc4 next-20171013] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Bhumika-Goyal/usb-gadget-configfs-make-config_item_type-const/20171014-133441 base: https://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb.git next config: i386-randconfig-x014-201741 (attached as .config) compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901 reproduce: # save the attached .config to linux build tree make ARCH=i386 All warnings (new ones prefixed by >>): drivers/usb/gadget/configfs.c: In function 'config_desc_make': >> drivers/usb/gadget/configfs.c:668:5: warning: passing argument 3 of 'config_group_init_type_name' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers] &gadget_config_type); ^ In file included from drivers/usb/gadget/configfs.c:1:0: include/linux/configfs.h:102:13: note: expected 'struct config_item_type *' but argument is of type 'const struct config_item_type *' extern void config_group_init_type_name(struct config_group *group, ^~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/usb/gadget/configfs.c: In function 'gadgets_make': drivers/usb/gadget/configfs.c:1421:48: warning: passing argument 3 of 'config_group_init_type_name' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers] config_group_init_type_name(&gi->group, name, &gadget_root_type); ^ In file included from drivers/usb/gadget/configfs.c:1:0: include/linux/configfs.h:102:13: note: expected 'struct config_item_type *' but argument is of type 'const struct config_item_type *' extern void config_group_init_type_name(struct config_group *group, ^~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/usb/gadget/configfs.c:1424:4: warning: passing argument 3 of 'config_group_init_type_name' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers] &functions_type); ^ In file included from drivers/usb/gadget/configfs.c:1:0: include/linux/configfs.h:102:13: note: expected 'struct config_item_type *' but argument is of type 'const struct config_item_type *' extern void config_group_init_type_name(struct config_group *group, ^~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/usb/gadget/configfs.c:1428:4: warning: passing argument 3 of 'config_group_init_type_name' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers] &config_desc_type); ^ In file included from drivers/usb/gadget/configfs.c:1:0: include/linux/configfs.h:102:13: note: expected 'struct config_item_type *' but argument is of type 'const struct config_item_type *' extern void config_group_init_type_name(struct config_group *group, ^~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/usb/gadget/configfs.c: At top level: >> drivers/usb/gadget/configfs.c:1487:15: warning: initialization discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers] .ci_type = &gadgets_type, ^ vim +668 drivers/usb/gadget/configfs.c 88af8bbe Sebastian Andrzej Siewior 2012-12-23 620 88af8bbe Sebastian Andrzej Siewior 2012-12-23 621 static struct config_group *config_desc_make( 88af8bbe Sebastian Andrzej Siewior 2012-12-23 622 struct config_group *group, 88af8bbe Sebastian Andrzej Siewior 2012-12-23 623 const char *name) 88af8bbe Sebastian Andrzej Siewior 2012-12-23 624 { 88af8bbe Sebastian Andrzej Siewior 2012-12-23 625 struct gadget_info *gi; 88af8bbe Sebastian Andrzej Siewior 2012-12-23 626 struct config_usb_cfg *cfg; 88af8bbe Sebastian Andrzej Siewior 2012-12-23 627 char buf[MAX_NAME_LEN]; 88af8bbe Sebastian Andrzej Siewior 2012-12-23 628 char *num_str; 88af8bbe Sebastian Andrzej Siewior 2012-12-23 629 u8 num; 88af8bbe Sebastian Andrzej Siewior 2012-12-23 630 int ret; 88af8bbe Sebastian Andrzej Siewior 2012-12-23 631 88af8bbe Sebastian Andrzej Siewior 2012-12-23 632 gi = container_of(group, struct gadget_info, configs_group); 88af8bbe Sebastian Andrzej Siewior 2012-12-23 633 ret = snprintf(buf, MAX_NAME_LEN, "%s", name); 88af8bbe Sebastian Andrzej Siewior 2012-12-23 634 if (ret >= MAX_NAME_LEN) 88af8bbe Sebastian Andrzej Siewior 2012-12-23 635 return ERR_PTR(-ENAMETOOLONG); 88af8bbe Sebastian Andrzej Siewior 2012-12-23 636 88af8bbe Sebastian Andrzej Siewior 2012-12-23 637 num_str = strchr(buf, '.'); 88af8bbe Sebastian Andrzej Siewior 2012-12-23 638 if (!num_str) { 88af8bbe Sebastian Andrzej Siewior 2012-12-23 639 pr_err("Unable to locate . in name.bConfigurationValue\n"); 88af8bbe Sebastian Andrzej Siewior 2012-12-23 640 return ERR_PTR(-EINVAL); 88af8bbe Sebastian Andrzej Siewior 2012-12-23 641 } 88af8bbe Sebastian Andrzej Siewior 2012-12-23 642 88af8bbe Sebastian Andrzej Siewior 2012-12-23 643 *num_str = '\0'; 88af8bbe Sebastian Andrzej Siewior 2012-12-23 644 num_str++; 88af8bbe Sebastian Andrzej Siewior 2012-12-23 645 88af8bbe Sebastian Andrzej Siewior 2012-12-23 646 if (!strlen(buf)) 88af8bbe Sebastian Andrzej Siewior 2012-12-23 647 return ERR_PTR(-EINVAL); 88af8bbe Sebastian Andrzej Siewior 2012-12-23 648 88af8bbe Sebastian Andrzej Siewior 2012-12-23 649 ret = kstrtou8(num_str, 0, &num); 88af8bbe Sebastian Andrzej Siewior 2012-12-23 650 if (ret) 88af8bbe Sebastian Andrzej Siewior 2012-12-23 651 return ERR_PTR(ret); 88af8bbe Sebastian Andrzej Siewior 2012-12-23 652 88af8bbe Sebastian Andrzej Siewior 2012-12-23 653 cfg = kzalloc(sizeof(*cfg), GFP_KERNEL); 88af8bbe Sebastian Andrzej Siewior 2012-12-23 654 if (!cfg) 88af8bbe Sebastian Andrzej Siewior 2012-12-23 655 return ERR_PTR(-ENOMEM); 88af8bbe Sebastian Andrzej Siewior 2012-12-23 656 cfg->c.label = kstrdup(buf, GFP_KERNEL); 88af8bbe Sebastian Andrzej Siewior 2012-12-23 657 if (!cfg->c.label) { 88af8bbe Sebastian Andrzej Siewior 2012-12-23 658 ret = -ENOMEM; 88af8bbe Sebastian Andrzej Siewior 2012-12-23 659 goto err; 88af8bbe Sebastian Andrzej Siewior 2012-12-23 660 } 88af8bbe Sebastian Andrzej Siewior 2012-12-23 661 cfg->c.bConfigurationValue = num; 88af8bbe Sebastian Andrzej Siewior 2012-12-23 662 cfg->c.MaxPower = CONFIG_USB_GADGET_VBUS_DRAW; 88af8bbe Sebastian Andrzej Siewior 2012-12-23 663 cfg->c.bmAttributes = USB_CONFIG_ATT_ONE; 88af8bbe Sebastian Andrzej Siewior 2012-12-23 664 INIT_LIST_HEAD(&cfg->string_list); 88af8bbe Sebastian Andrzej Siewior 2012-12-23 665 INIT_LIST_HEAD(&cfg->func_list); 88af8bbe Sebastian Andrzej Siewior 2012-12-23 666 88af8bbe Sebastian Andrzej Siewior 2012-12-23 667 config_group_init_type_name(&cfg->group, name, 88af8bbe Sebastian Andrzej Siewior 2012-12-23 @668 &gadget_config_type); 1ae1602d Christoph Hellwig 2016-02-26 669 88af8bbe Sebastian Andrzej Siewior 2012-12-23 670 config_group_init_type_name(&cfg->strings_group, "strings", 88af8bbe Sebastian Andrzej Siewior 2012-12-23 671 &gadget_config_name_strings_type); 1ae1602d Christoph Hellwig 2016-02-26 672 configfs_add_default_group(&cfg->strings_group, &cfg->group); 88af8bbe Sebastian Andrzej Siewior 2012-12-23 673 88af8bbe Sebastian Andrzej Siewior 2012-12-23 674 ret = usb_add_config_only(&gi->cdev, &cfg->c); 88af8bbe Sebastian Andrzej Siewior 2012-12-23 675 if (ret) 88af8bbe Sebastian Andrzej Siewior 2012-12-23 676 goto err; 88af8bbe Sebastian Andrzej Siewior 2012-12-23 677 88af8bbe Sebastian Andrzej Siewior 2012-12-23 678 return &cfg->group; 88af8bbe Sebastian Andrzej Siewior 2012-12-23 679 err: 88af8bbe Sebastian Andrzej Siewior 2012-12-23 680 kfree(cfg->c.label); 88af8bbe Sebastian Andrzej Siewior 2012-12-23 681 kfree(cfg); 88af8bbe Sebastian Andrzej Siewior 2012-12-23 682 return ERR_PTR(ret); 88af8bbe Sebastian Andrzej Siewior 2012-12-23 683 } 88af8bbe Sebastian Andrzej Siewior 2012-12-23 684 :::::: The code at line 668 was first introduced by commit :::::: 88af8bbe4ef781031ad3370847553f3b42ba0076 usb: gadget: the start of the configfs interface :::::: TO: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx> :::::: CC: Felipe Balbi <balbi@xxxxxx> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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