[kbuild-all] [xlnx:master 10/20] include/linux/mutex.h:154:40: warning: ignoring return value of 'mutex_lock_interruptible_nested', declared with attribute warn_unused_result

tree: https://github.com/Xilinx/linux-xlnx master head: 319e5bc767fe351a63744daa9cdd69b1915956d0 commit: b4164ed1bbab5999a8b30dc25eaaa3200ff1fe59 [10/20] misc: ai-engine: Move AI engine reg access to kernel config: i386-allyesconfig (attached as .config) compiler: gcc-9 (Debian 9.3.0-13) 9.3.0 reproduce (this is a W=1 build): git checkout b4164ed1bbab5999a8b30dc25eaaa3200ff1fe59 # save the attached .config to linux build tree make W=1 ARCH=i386 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>, old ones prefixed by <<): In file included from include/linux/kernfs.h:12, from include/linux/sysfs.h:16, from include/linux/kobject.h:20, from include/linux/cdev.h:5, from drivers/misc/xilinx-ai-engine/ai-engine-dev.c:9: drivers/misc/xilinx-ai-engine/ai-engine-dev.c: In function 'aie_request_partition_from_id': 154 | #define mutex_lock_interruptible(lock) mutex_lock_interruptible_nested(lock, 0) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 165 | mutex_lock_interruptible(&adev->mlock); | ^~~~~~~~~~~~~~~~~~~~~~~~ 154 | #define mutex_lock_interruptible(lock) mutex_lock_interruptible_nested(lock, 0) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/misc/xilinx-ai-engine/ai-engine-dev.c:175:2: note: in expansion of macro 'mutex_lock_interruptible' 175 | mutex_lock_interruptible(&apart->mlock); | ^~~~~~~~~~~~~~~~~~~~~~~~ drivers/misc/xilinx-ai-engine/ai-engine-dev.c: In function 'aie_enquire_partitions': 154 | #define mutex_lock_interruptible(lock) mutex_lock_interruptible_nested(lock, 0) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/misc/xilinx-ai-engine/ai-engine-dev.c:97:2: note: in expansion of macro 'mutex_lock_interruptible' 97 | mutex_lock_interruptible(&adev->mlock); | ^~~~~~~~~~~~~~~~~~~~~~~~ -- In file included from include/linux/cdev.h:8, from drivers/misc/xilinx-ai-engine/ai-engine-part.c:8: drivers/misc/xilinx-ai-engine/ai-engine-part.c: In function 'aie_part_reg_validation': 68 | "Invalid reg off(0x%lx), not 32bit aligned.n", | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/device.h:1658:22: note: in definition of macro 'dev_fmt' 1658 | #define dev_fmt(fmt) fmt | ^~~ 67 | dev_err(&apart->dev, | ^~~~~~~ drivers/misc/xilinx-ai-engine/ai-engine-part.c:68:25: note: format string is defined here 68 | "Invalid reg off(0x%lx), not 32bit aligned.n", | ~~^ | | | long unsigned int | %x In file included from include/linux/cdev.h:8, from drivers/misc/xilinx-ai-engine/ai-engine-part.c:8: 74 | dev_err(&apart->dev, "Invalid reg operation len %lu.n", len); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/device.h:1658:22: note: in definition of macro 'dev_fmt' 1658 | #define dev_fmt(fmt) fmt | ^~~ drivers/misc/xilinx-ai-engine/ai-engine-part.c:74:3: note: in expansion of macro 'dev_err' 74 | dev_err(&apart->dev, "Invalid reg operation len %lu.n", len); | ^~~~~~~ drivers/misc/xilinx-ai-engine/ai-engine-part.c:74:53: note: format string is defined here 74 | dev_err(&apart->dev, "Invalid reg operation len %lu.n", len); | ~~^ | | | long unsigned int | %u In file included from include/linux/cdev.h:8, from drivers/misc/xilinx-ai-engine/ai-engine-part.c:8: drivers/misc/xilinx-ai-engine/ai-engine-part.c:82:4: warning: format '%lu' expects argument of type 'long unsigned int', but argument 3 has type 'size_t' {aka 'unsigned int'} [-Wformat=] 82 | "Invalid reg operation len %lu.n", len); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/device.h:1658:22: note: in definition of macro 'dev_fmt' 1658 | #define dev_fmt(fmt) fmt | ^~~ drivers/misc/xilinx-ai-engine/ai-engine-part.c:81:3: note: in expansion of macro 'dev_err' 81 | dev_err(&apart->dev, | ^~~~~~~ drivers/misc/xilinx-ai-engine/ai-engine-part.c:82:33: note: format string is defined here 82 | "Invalid reg operation len %lu.n", len); | ~~^ | | | long unsigned int | %u In file included from include/linux/cdev.h:8, from drivers/misc/xilinx-ai-engine/ai-engine-part.c:8: drivers/misc/xilinx-ai-engine/ai-engine-part.c:116:6: warning: format '%lx' expects argument of type 'long unsigned int', but argument 3 has type 'size_t' {aka 'unsigned int'} [-Wformat=] 116 | "reg 0x%lx,0x%lx not writable.n", | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/device.h:1658:22: note: in definition of macro 'dev_fmt' 1658 | #define dev_fmt(fmt) fmt | ^~~ drivers/misc/xilinx-ai-engine/ai-engine-part.c:115:5: note: in expansion of macro 'dev_err' 115 | dev_err(&apart->dev, | ^~~~~~~ drivers/misc/xilinx-ai-engine/ai-engine-part.c:116:15: note: format string is defined here 116 | "reg 0x%lx,0x%lx not writable.n", | ~~^ | | | long unsigned int | %x In file included from include/linux/cdev.h:8, from drivers/misc/xilinx-ai-engine/ai-engine-part.c:8: drivers/misc/xilinx-ai-engine/ai-engine-part.c:116:6: warning: format '%lx' expects argument of type 'long unsigned int', but argument 4 has type 'size_t' {aka 'unsigned int'} [-Wformat=] 116 | "reg 0x%lx,0x%lx not writable.n", | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/device.h:1658:22: note: in definition of macro 'dev_fmt' 1658 | #define dev_fmt(fmt) fmt | ^~~ drivers/misc/xilinx-ai-engine/ai-engine-part.c:115:5: note: in expansion of macro 'dev_err' 115 | dev_err(&apart->dev, | ^~~~~~~ drivers/misc/xilinx-ai-engine/ai-engine-part.c:116:21: note: format string is defined here 116 | "reg 0x%lx,0x%lx not writable.n", | ~~^ | | | long unsigned int | %x In file included from include/linux/cdev.h:8, from drivers/misc/xilinx-ai-engine/ai-engine-part.c:8: drivers/misc/xilinx-ai-engine/ai-engine-part.c: In function 'aie_part_write_register': drivers/misc/xilinx-ai-engine/ai-engine-part.c:153:24: warning: format '%lx' expects argument of type 'long unsigned int', but argument 3 has type 'size_t' {aka 'unsigned int'} [-Wformat=] 153 | dev_err(&apart->dev, "failed to write to 0x%lx,0x%lx.n", | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/device.h:1658:22: note: in definition of macro 'dev_fmt' 1658 | #define dev_fmt(fmt) fmt | ^~~ drivers/misc/xilinx-ai-engine/ai-engine-part.c:153:3: note: in expansion of macro 'dev_err' 153 | dev_err(&apart->dev, "failed to write to 0x%lx,0x%lx.n", | ^~~~~~~ drivers/misc/xilinx-ai-engine/ai-engine-part.c:153:48: note: format string is defined here 153 | dev_err(&apart->dev, "failed to write to 0x%lx,0x%lx.n", | ~~^ | | | long unsigned int | %x In file included from include/linux/cdev.h:8, from drivers/misc/xilinx-ai-engine/ai-engine-part.c:8: drivers/misc/xilinx-ai-engine/ai-engine-part.c:153:24: warning: format '%lx' expects argument of type 'long unsigned int', but argument 4 has type 'size_t' {aka 'unsigned int'} [-Wformat=] 153 | dev_err(&apart->dev, "failed to write to 0x%lx,0x%lx.n", | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/device.h:1658:22: note: in definition of macro 'dev_fmt' 1658 | #define dev_fmt(fmt) fmt | ^~~ drivers/misc/xilinx-ai-engine/ai-engine-part.c:153:3: note: in expansion of macro 'dev_err' 153 | dev_err(&apart->dev, "failed to write to 0x%lx,0x%lx.n", | ^~~~~~~ drivers/misc/xilinx-ai-engine/ai-engine-part.c:153:54: note: format string is defined here 153 | dev_err(&apart->dev, "failed to write to 0x%lx,0x%lx.n", | ~~^ | | | long unsigned int | %x In file included from include/linux/cdev.h:8, from drivers/misc/xilinx-ai-engine/ai-engine-part.c:8: drivers/misc/xilinx-ai-engine/ai-engine-part.c: In function 'aie_part_read_register': drivers/misc/xilinx-ai-engine/ai-engine-part.c:193:24: warning: format '%lx' expects argument of type 'long unsigned int', but argument 3 has type 'size_t' {aka 'unsigned int'} [-Wformat=] 193 | dev_err(&apart->dev, "Invalid read request 0x%lx,0x%lx.n", | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/device.h:1658:22: note: in definition of macro 'dev_fmt' 1658 | #define dev_fmt(fmt) fmt | ^~~ drivers/misc/xilinx-ai-engine/ai-engine-part.c:193:3: note: in expansion of macro 'dev_err' 193 | dev_err(&apart->dev, "Invalid read request 0x%lx,0x%lx.n", | ^~~~~~~ drivers/misc/xilinx-ai-engine/ai-engine-part.c:193:50: note: format string is defined here 193 | dev_err(&apart->dev, "Invalid read request 0x%lx,0x%lx.n", | ~~^ | | | long unsigned int | %x In file included from include/linux/cdev.h:8, from drivers/misc/xilinx-ai-engine/ai-engine-part.c:8: drivers/misc/xilinx-ai-engine/ai-engine-part.c:193:24: warning: format '%lx' expects argument of type 'long unsigned int', but argument 4 has type 'size_t' {aka 'unsigned int'} [-Wformat=] 193 | dev_err(&apart->dev, "Invalid read request 0x%lx,0x%lx.n", | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/device.h:1658:22: note: in definition of macro 'dev_fmt' 1658 | #define dev_fmt(fmt) fmt | ^~~ drivers/misc/xilinx-ai-engine/ai-engine-part.c:193:3: note: in expansion of macro 'dev_err' 193 | dev_err(&apart->dev, "Invalid read request 0x%lx,0x%lx.n", | ^~~~~~~ drivers/misc/xilinx-ai-engine/ai-engine-part.c:193:56: note: format string is defined here 193 | dev_err(&apart->dev, "Invalid read request 0x%lx,0x%lx.n", | ~~^ | | | long unsigned int | %x In file included from include/linux/kernfs.h:12, from include/linux/sysfs.h:16, from include/linux/kobject.h:20, from include/linux/cdev.h:5, from drivers/misc/xilinx-ai-engine/ai-engine-part.c:8: drivers/misc/xilinx-ai-engine/ai-engine-part.c: In function 'aie_part_release': 154 | #define mutex_lock_interruptible(lock) mutex_lock_interruptible_nested(lock, 0) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 253 | mutex_lock_interruptible(&apart->mlock); | ^~~~~~~~~~~~~~~~~~~~~~~~ drivers/misc/xilinx-ai-engine/ai-engine-part.c: In function 'aie_part_ioctl': 154 | #define mutex_lock_interruptible(lock) mutex_lock_interruptible_nested(lock, 0) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/misc/xilinx-ai-engine/ai-engine-part.c:366:3: note: in expansion of macro 'mutex_lock_interruptible' 366 | mutex_lock_interruptible(&apart->mlock); | ^~~~~~~~~~~~~~~~~~~~~~~~ drivers/misc/xilinx-ai-engine/ai-engine-part.c: In function 'aie_part_write_iter': 154 | #define mutex_lock_interruptible(lock) mutex_lock_interruptible_nested(lock, 0) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/misc/xilinx-ai-engine/ai-engine-part.c:276:2: note: in expansion of macro 'mutex_lock_interruptible' 276 | mutex_lock_interruptible(&apart->mlock); | ^~~~~~~~~~~~~~~~~~~~~~~~ drivers/misc/xilinx-ai-engine/ai-engine-part.c: In function 'aie_part_read_iter': 154 | #define mutex_lock_interruptible(lock) mutex_lock_interruptible_nested(lock, 0) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/misc/xilinx-ai-engine/ai-engine-part.c:296:2: note: in expansion of macro 'mutex_lock_interruptible' 296 | mutex_lock_interruptible(&apart->mlock); | ^~~~~~~~~~~~~~~~~~~~~~~~ drivers/misc/xilinx-ai-engine/ai-engine-part.c: In function 'of_aie_part_probe': 154 | #define mutex_lock_interruptible(lock) mutex_lock_interruptible_nested(lock, 0) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/misc/xilinx-ai-engine/ai-engine-part.c:514:2: note: in expansion of macro 'mutex_lock_interruptible' 514 | mutex_lock_interruptible(&adev->mlock); | ^~~~~~~~~~~~~~~~~~~~~~~~ drivers/misc/xilinx-ai-engine/ai-engine-part.c: In function 'aie_create_partition': 154 | #define mutex_lock_interruptible(lock) mutex_lock_interruptible_nested(lock, 0) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/misc/xilinx-ai-engine/ai-engine-part.c:429:2: note: in expansion of macro 'mutex_lock_interruptible' 429 | mutex_lock_interruptible(&adev->mlock); | ^~~~~~~~~~~~~~~~~~~~~~~~ 154 | #define mutex_lock_interruptible(lock) mutex_lock_interruptible_nested(lock, 0) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/misc/xilinx-ai-engine/ai-engine-part.c:476:2: note: in expansion of macro 'mutex_lock_interruptible' 476 | mutex_lock_interruptible(&adev->mlock); | ^~~~~~~~~~~~~~~~~~~~~~~~ drivers/misc/xilinx-ai-engine/ai-engine-part.c: In function 'aie_part_release_device': 154 | #define mutex_lock_interruptible(lock) mutex_lock_interruptible_nested(lock, 0) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/misc/xilinx-ai-engine/ai-engine-part.c:401:2: note: in expansion of macro 'mutex_lock_interruptible' 401 | mutex_lock_interruptible(&adev->mlock); | ^~~~~~~~~~~~~~~~~~~~~~~~ vim +/mutex_lock_interruptible_nested +154 include/linux/mutex.h e4564f79d4b692 Peter Zijlstra 2007-10-11 152 e4564f79d4b692 Peter Zijlstra 2007-10-11 153 #define mutex_lock(lock) mutex_lock_nested(lock, 0) e4564f79d4b692 Peter Zijlstra 2007-10-11 @154 #define mutex_lock_interruptible(lock) mutex_lock_interruptible_nested(lock, 0) ad776537cc6b4b Liam R. Howlett 2007-12-06 155 #define mutex_lock_killable(lock) mutex_lock_killable_nested(lock, 0) 1460cb65a10f6c Tejun Heo 2016-10-28 156 #define mutex_lock_io(lock) mutex_lock_io_nested(lock, 0) e4c70a6629f9c7 Peter Zijlstra 2011-05-24 157 :::::: The code at line 154 was first introduced by commit :::::: e4564f79d4b6923da7360df4b24a48cc2d4160de lockdep: fixup mutex annotations :::::: TO: Peter Zijlstra <a.p.zijlstra(a)chello.nl&gt; :::::: CC: Peter Zijlstra <a.p.zijlstra(a)chello.nl&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org