Hi Yangtao, Thank you for the patch! Yet something to improve: [auto build test ERROR on mtd/master] [also build test ERROR on v4.20-rc4 next-20181130] [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/Yangtao-Li/mtd-remove-DEBUGFS_RO_ATTR/20181202-065958 base: git://git.infradead.org/linux-mtd.git master config: nds32-allyesconfig (attached as .config) compiler: nds32le-linux-gcc (GCC) 6.4.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree GCC_VERSION=6.4.0 make.cross ARCH=nds32 All errors (new ones prefixed by >>): drivers/mtd/devices/docg3.c:1679:1: warning: data definition has no type or storage class DEBUGFS_RO_ATTR(device_id, dbg_device_id_show); ^~~~~~~~~~~~~~~ drivers/mtd/devices/docg3.c:1679:1: error: type defaults to 'int' in declaration of 'DEBUGFS_RO_ATTR' [-Werror=implicit-int] drivers/mtd/devices/docg3.c:1679:1: warning: parameter names (without types) in function declaration drivers/mtd/devices/docg3.c: In function 'doc_dbg_register': >> drivers/mtd/devices/docg3.c:1752:9: error: 'device_id_fops' undeclared (first use in this function) &device_id_fops); ^~~~~~~~~~~~~~ drivers/mtd/devices/docg3.c:1752:9: note: each undeclared identifier is reported only once for each function it appears in At top level: drivers/mtd/devices/docg3.c:1667:12: warning: 'dbg_device_id_show' defined but not used [-Wunused-function] static int dbg_device_id_show(struct seq_file *s, void *p) ^~~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +/device_id_fops +1752 drivers/mtd/devices/docg3.c efa2ca73 Robert Jarzmik 2011-10-05 1666 efa2ca73 Robert Jarzmik 2011-10-05 1667 static int dbg_device_id_show(struct seq_file *s, void *p) efa2ca73 Robert Jarzmik 2011-10-05 1668 { efa2ca73 Robert Jarzmik 2011-10-05 1669 struct docg3 *docg3 = (struct docg3 *)s->private; 7b0e67f6 Robert Jarzmik 2012-03-22 1670 int id; 7b0e67f6 Robert Jarzmik 2012-03-22 1671 7b0e67f6 Robert Jarzmik 2012-03-22 1672 mutex_lock(&docg3->cascade->lock); 7b0e67f6 Robert Jarzmik 2012-03-22 1673 id = doc_register_readb(docg3, DOC_DEVICESELECT); 7b0e67f6 Robert Jarzmik 2012-03-22 1674 mutex_unlock(&docg3->cascade->lock); efa2ca73 Robert Jarzmik 2011-10-05 1675 8c98d255 Joe Perches 2014-09-29 1676 seq_printf(s, "DeviceId = %d\n", id); 8c98d255 Joe Perches 2014-09-29 1677 return 0; efa2ca73 Robert Jarzmik 2011-10-05 1678 } efa2ca73 Robert Jarzmik 2011-10-05 @1679 DEBUGFS_RO_ATTR(device_id, dbg_device_id_show); efa2ca73 Robert Jarzmik 2011-10-05 1680 34e778aa Yangtao Li 2018-12-01 1681 static int protection_show(struct seq_file *s, void *p) efa2ca73 Robert Jarzmik 2011-10-05 1682 { efa2ca73 Robert Jarzmik 2011-10-05 1683 struct docg3 *docg3 = (struct docg3 *)s->private; dbc26d98 Robert Jarzmik 2011-11-19 1684 int protect, dps0, dps0_low, dps0_high, dps1, dps1_low, dps1_high; dbc26d98 Robert Jarzmik 2011-11-19 1685 7b0e67f6 Robert Jarzmik 2012-03-22 1686 mutex_lock(&docg3->cascade->lock); dbc26d98 Robert Jarzmik 2011-11-19 1687 protect = doc_register_readb(docg3, DOC_PROTECTION); dbc26d98 Robert Jarzmik 2011-11-19 1688 dps0 = doc_register_readb(docg3, DOC_DPS0_STATUS); dbc26d98 Robert Jarzmik 2011-11-19 1689 dps0_low = doc_register_readw(docg3, DOC_DPS0_ADDRLOW); dbc26d98 Robert Jarzmik 2011-11-19 1690 dps0_high = doc_register_readw(docg3, DOC_DPS0_ADDRHIGH); dbc26d98 Robert Jarzmik 2011-11-19 1691 dps1 = doc_register_readb(docg3, DOC_DPS1_STATUS); dbc26d98 Robert Jarzmik 2011-11-19 1692 dps1_low = doc_register_readw(docg3, DOC_DPS1_ADDRLOW); dbc26d98 Robert Jarzmik 2011-11-19 1693 dps1_high = doc_register_readw(docg3, DOC_DPS1_ADDRHIGH); 7b0e67f6 Robert Jarzmik 2012-03-22 1694 mutex_unlock(&docg3->cascade->lock); efa2ca73 Robert Jarzmik 2011-10-05 1695 8c98d255 Joe Perches 2014-09-29 1696 seq_printf(s, "Protection = 0x%02x (", protect); efa2ca73 Robert Jarzmik 2011-10-05 1697 if (protect & DOC_PROTECT_FOUNDRY_OTP_LOCK) 8c98d255 Joe Perches 2014-09-29 1698 seq_puts(s, "FOUNDRY_OTP_LOCK,"); efa2ca73 Robert Jarzmik 2011-10-05 1699 if (protect & DOC_PROTECT_CUSTOMER_OTP_LOCK) 8c98d255 Joe Perches 2014-09-29 1700 seq_puts(s, "CUSTOMER_OTP_LOCK,"); efa2ca73 Robert Jarzmik 2011-10-05 1701 if (protect & DOC_PROTECT_LOCK_INPUT) 8c98d255 Joe Perches 2014-09-29 1702 seq_puts(s, "LOCK_INPUT,"); efa2ca73 Robert Jarzmik 2011-10-05 1703 if (protect & DOC_PROTECT_STICKY_LOCK) 8c98d255 Joe Perches 2014-09-29 1704 seq_puts(s, "STICKY_LOCK,"); efa2ca73 Robert Jarzmik 2011-10-05 1705 if (protect & DOC_PROTECT_PROTECTION_ENABLED) 8c98d255 Joe Perches 2014-09-29 1706 seq_puts(s, "PROTECTION ON,"); efa2ca73 Robert Jarzmik 2011-10-05 1707 if (protect & DOC_PROTECT_IPL_DOWNLOAD_LOCK) 8c98d255 Joe Perches 2014-09-29 1708 seq_puts(s, "IPL_DOWNLOAD_LOCK,"); efa2ca73 Robert Jarzmik 2011-10-05 1709 if (protect & DOC_PROTECT_PROTECTION_ERROR) 8c98d255 Joe Perches 2014-09-29 1710 seq_puts(s, "PROTECT_ERR,"); efa2ca73 Robert Jarzmik 2011-10-05 1711 else 8c98d255 Joe Perches 2014-09-29 1712 seq_puts(s, "NO_PROTECT_ERR"); 8c98d255 Joe Perches 2014-09-29 1713 seq_puts(s, ")\n"); efa2ca73 Robert Jarzmik 2011-10-05 1714 8c98d255 Joe Perches 2014-09-29 1715 seq_printf(s, "DPS0 = 0x%02x : Protected area [0x%x - 0x%x] : OTP=%d, READ=%d, WRITE=%d, HW_LOCK=%d, KEY_OK=%d\n", efa2ca73 Robert Jarzmik 2011-10-05 1716 dps0, dps0_low, dps0_high, efa2ca73 Robert Jarzmik 2011-10-05 1717 !!(dps0 & DOC_DPS_OTP_PROTECTED), efa2ca73 Robert Jarzmik 2011-10-05 1718 !!(dps0 & DOC_DPS_READ_PROTECTED), efa2ca73 Robert Jarzmik 2011-10-05 1719 !!(dps0 & DOC_DPS_WRITE_PROTECTED), efa2ca73 Robert Jarzmik 2011-10-05 1720 !!(dps0 & DOC_DPS_HW_LOCK_ENABLED), efa2ca73 Robert Jarzmik 2011-10-05 1721 !!(dps0 & DOC_DPS_KEY_OK)); 8c98d255 Joe Perches 2014-09-29 1722 seq_printf(s, "DPS1 = 0x%02x : Protected area [0x%x - 0x%x] : OTP=%d, READ=%d, WRITE=%d, HW_LOCK=%d, KEY_OK=%d\n", efa2ca73 Robert Jarzmik 2011-10-05 1723 dps1, dps1_low, dps1_high, efa2ca73 Robert Jarzmik 2011-10-05 1724 !!(dps1 & DOC_DPS_OTP_PROTECTED), efa2ca73 Robert Jarzmik 2011-10-05 1725 !!(dps1 & DOC_DPS_READ_PROTECTED), efa2ca73 Robert Jarzmik 2011-10-05 1726 !!(dps1 & DOC_DPS_WRITE_PROTECTED), efa2ca73 Robert Jarzmik 2011-10-05 1727 !!(dps1 & DOC_DPS_HW_LOCK_ENABLED), efa2ca73 Robert Jarzmik 2011-10-05 1728 !!(dps1 & DOC_DPS_KEY_OK)); 8c98d255 Joe Perches 2014-09-29 1729 return 0; efa2ca73 Robert Jarzmik 2011-10-05 1730 } 34e778aa Yangtao Li 2018-12-01 1731 34e778aa Yangtao Li 2018-12-01 1732 DEFINE_SHOW_ATTRIBUTE(protection); efa2ca73 Robert Jarzmik 2011-10-05 1733 e8e3edb9 Mario Rugiero 2017-05-29 1734 static void __init doc_dbg_register(struct mtd_info *floor) efa2ca73 Robert Jarzmik 2011-10-05 1735 { e8e3edb9 Mario Rugiero 2017-05-29 1736 struct dentry *root = floor->dbg.dfs_dir; e8e3edb9 Mario Rugiero 2017-05-29 1737 struct docg3 *docg3 = floor->priv; efa2ca73 Robert Jarzmik 2011-10-05 1738 1530578a Boris Brezillon 2017-11-11 1739 if (IS_ERR_OR_NULL(root)) { 1530578a Boris Brezillon 2017-11-11 1740 if (IS_ENABLED(CONFIG_DEBUG_FS) && 1530578a Boris Brezillon 2017-11-11 1741 !IS_ENABLED(CONFIG_MTD_PARTITIONED_MASTER)) 1530578a Boris Brezillon 2017-11-11 1742 dev_warn(floor->dev.parent, 1530578a Boris Brezillon 2017-11-11 1743 "CONFIG_MTD_PARTITIONED_MASTER must be enabled to expose debugfs stuff\n"); e8e3edb9 Mario Rugiero 2017-05-29 1744 return; 1530578a Boris Brezillon 2017-11-11 1745 } efa2ca73 Robert Jarzmik 2011-10-05 1746 e8e3edb9 Mario Rugiero 2017-05-29 1747 debugfs_create_file("docg3_flashcontrol", S_IRUSR, root, docg3, efa2ca73 Robert Jarzmik 2011-10-05 1748 &flashcontrol_fops); e8e3edb9 Mario Rugiero 2017-05-29 1749 debugfs_create_file("docg3_asic_mode", S_IRUSR, root, docg3, e8e3edb9 Mario Rugiero 2017-05-29 1750 &asic_mode_fops); e8e3edb9 Mario Rugiero 2017-05-29 1751 debugfs_create_file("docg3_device_id", S_IRUSR, root, docg3, e8e3edb9 Mario Rugiero 2017-05-29 @1752 &device_id_fops); e8e3edb9 Mario Rugiero 2017-05-29 1753 debugfs_create_file("docg3_protection", S_IRUSR, root, docg3, e8e3edb9 Mario Rugiero 2017-05-29 1754 &protection_fops); efa2ca73 Robert Jarzmik 2011-10-05 1755 } efa2ca73 Robert Jarzmik 2011-10-05 1756 :::::: The code at line 1752 was first introduced by commit :::::: e8e3edb95ce6a146bc774b6cfad3553f4383edc8 mtd: create per-device and module-scope debugfs entries :::::: TO: Mario Rugiero <mrugiero@xxxxxxxxx> :::::: CC: Brian Norris <computersforpeace@xxxxxxxxx> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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