Messages in this thread | | | Date | Sat, 5 Jun 2021 19:08:08 +0800 | From | kernel test robot <> | Subject | drivers/input/misc/iqs626a.c:1645:12: warning: stack frame size of 2544 bytes in function 'iqs626_probe' |
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tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 9d32fa5d74b148b1cba262c0c24b9a27a910909b commit: f1d2809de97adc422967b6de59f0f6199769eb93 Input: Add support for Azoteq IQS626A date: 2 months ago config: powerpc64-randconfig-r001-20210605 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 8ec9aa236e325fd4629cfeefac2919302e14d61a) 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 # install powerpc64 cross compiling tool for clang build # apt-get install binutils-powerpc64-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f1d2809de97adc422967b6de59f0f6199769eb93 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout f1d2809de97adc422967b6de59f0f6199769eb93 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=powerpc64
If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
In file included from drivers/input/misc/iqs626a.c:13: In file included from include/linux/completion.h:12: In file included from include/linux/swait.h:5: In file included from include/linux/list.h:9: In file included from include/linux/kernel.h:11: In file included from include/linux/bitops.h:32: In file included from arch/powerpc/include/asm/bitops.h:62: arch/powerpc/include/asm/barrier.h:49:9: warning: '__lwsync' macro redefined [-Wmacro-redefined] #define __lwsync() __asm__ __volatile__ (stringify_in_c(LWSYNC) : : :"memory") ^ <built-in>:309:9: note: previous definition is here #define __lwsync __builtin_ppc_lwsync ^ >> drivers/input/misc/iqs626a.c:1645:12: warning: stack frame size of 2544 bytes in function 'iqs626_probe' [-Wframe-larger-than=] static int iqs626_probe(struct i2c_client *client) ^ 2 warnings generated.
vim +/iqs626_probe +1645 drivers/input/misc/iqs626a.c
1644 > 1645 static int iqs626_probe(struct i2c_client *client) 1646 { 1647 struct iqs626_ver_info ver_info; 1648 struct iqs626_private *iqs626; 1649 int error; 1650 1651 iqs626 = devm_kzalloc(&client->dev, sizeof(*iqs626), GFP_KERNEL); 1652 if (!iqs626) 1653 return -ENOMEM; 1654 1655 i2c_set_clientdata(client, iqs626); 1656 iqs626->client = client; 1657 1658 iqs626->regmap = devm_regmap_init_i2c(client, &iqs626_regmap_config); 1659 if (IS_ERR(iqs626->regmap)) { 1660 error = PTR_ERR(iqs626->regmap); 1661 dev_err(&client->dev, "Failed to initialize register map: %d\n", 1662 error); 1663 return error; 1664 } 1665 1666 init_completion(&iqs626->ati_done); 1667 1668 error = regmap_raw_read(iqs626->regmap, IQS626_VER_INFO, &ver_info, 1669 sizeof(ver_info)); 1670 if (error) 1671 return error; 1672 1673 if (ver_info.prod_num != IQS626_VER_INFO_PROD_NUM) { 1674 dev_err(&client->dev, "Unrecognized product number: 0x%02X\n", 1675 ver_info.prod_num); 1676 return -EINVAL; 1677 } 1678 1679 error = iqs626_parse_prop(iqs626); 1680 if (error) 1681 return error; 1682 1683 error = iqs626_input_init(iqs626); 1684 if (error) 1685 return error; 1686 1687 error = devm_request_threaded_irq(&client->dev, client->irq, 1688 NULL, iqs626_irq, IRQF_ONESHOT, 1689 client->name, iqs626); 1690 if (error) { 1691 dev_err(&client->dev, "Failed to request IRQ: %d\n", error); 1692 return error; 1693 } 1694 1695 if (!wait_for_completion_timeout(&iqs626->ati_done, 1696 msecs_to_jiffies(2000))) { 1697 dev_err(&client->dev, "Failed to complete ATI\n"); 1698 return -ETIMEDOUT; 1699 } 1700 1701 /* 1702 * The keypad may include one or more switches and is not registered 1703 * until ATI is complete and the initial switch states are read. 1704 */ 1705 error = input_register_device(iqs626->keypad); 1706 if (error) 1707 dev_err(&client->dev, "Failed to register keypad: %d\n", error); 1708 1709 return error; 1710 } 1711
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