# git rev-parse -q --verify 71a7507afbc3f27c346898f13ab9bfd918613c34^{commit} 71a7507afbc3f27c346898f13ab9bfd918613c34 already have revision, skipping fetch # git checkout -q -f -B kisskb 71a7507afbc3f27c346898f13ab9bfd918613c34 # git clean -qxdf # < git log -1 # commit 71a7507afbc3f27c346898f13ab9bfd918613c34 # Merge: ba54ff1fb662 f18caf261398 # Author: Linus Torvalds # Date: Fri Dec 16 03:54:54 2022 -0800 # # Merge tag 'driver-core-6.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core # # Pull driver core updates from Greg KH: # "Here is the set of driver core and kernfs changes for 6.2-rc1. # # The "big" change in here is the addition of a new macro, # container_of_const() that will preserve the "const-ness" of a pointer # passed into it. # # The "problem" of the current container_of() macro is that if you pass # in a "const *", out of it can comes a non-const pointer unless you # specifically ask for it. For many usages, we want to preserve the # "const" attribute by using the same call. For a specific example, this # series changes the kobj_to_dev() macro to use it, allowing it to be # used no matter what the const value is. This prevents every subsystem # from having to declare 2 different individual macros (i.e. # kobj_const_to_dev() and kobj_to_dev()) and having the compiler enforce # the const value at build time, which having 2 macros would not do # either. # # The driver for all of this have been discussions with the Rust kernel # developers as to how to properly mark driver core, and kobject, # objects as being "non-mutable". The changes to the kobject and driver # core in this pull request are the result of that, as there are lots of # paths where kobjects and device pointers are not modified at all, so # marking them as "const" allows the compiler to enforce this. # # So, a nice side affect of the Rust development effort has been already # to clean up the driver core code to be more obvious about object # rules. # # All of this has been bike-shedded in quite a lot of detail on lkml # with different names and implementations resulting in the tiny version # we have in here, much better than my original proposal. Lots of # subsystem maintainers have acked the changes as well. # # Other than this change, included in here are smaller stuff like: # # - kernfs fixes and updates to handle lock contention better # # - vmlinux.lds.h fixes and updates # # - sysfs and debugfs documentation updates # # - device property updates # # All of these have been in the linux-next tree for quite a while with # no problems" # # * tag 'driver-core-6.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (58 commits) # device property: Fix documentation for fwnode_get_next_parent() # firmware_loader: fix up to_fw_sysfs() to preserve const # usb.h: take advantage of container_of_const() # device.h: move kobj_to_dev() to use container_of_const() # container_of: add container_of_const() that preserves const-ness of the pointer # driver core: fix up missed drivers/s390/char/hmcdrv_dev.c class.devnode() conversion. # driver core: fix up missed scsi/cxlflash class.devnode() conversion. # driver core: fix up some missing class.devnode() conversions. # driver core: make struct class.devnode() take a const * # driver core: make struct class.dev_uevent() take a const * # cacheinfo: Remove of_node_put() for fw_token # device property: Add a blank line in Kconfig of tests # device property: Rename goto label to be more precise # device property: Move PROPERTY_ENTRY_BOOL() a bit down # device property: Get rid of __PROPERTY_ENTRY_ARRAY_EL*SIZE*() # kernfs: fix all kernel-doc warnings and multiple typos # driver core: pass a const * into of_device_uevent() # kobject: kset_uevent_ops: make name() callback take a const * # kobject: kset_uevent_ops: make filter() callback take a const * # kobject: make kobject_namespace take a const * # ... # < /opt/cross/kisskb/korg/gcc-11.1.0-nolibc/sh4-linux/bin/sh4-linux-gcc --version # < /opt/cross/kisskb/korg/gcc-11.1.0-nolibc/sh4-linux/bin/sh4-linux-ld --version # < git log --format=%s --max-count=1 71a7507afbc3f27c346898f13ab9bfd918613c34 # < make -s -j 160 ARCH=sh O=/kisskb/build/linus_se7619_defconfig_sh4-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/sh4-linux/bin/sh4-linux- se7619_defconfig # < make -s -j 160 ARCH=sh O=/kisskb/build/linus_se7619_defconfig_sh4-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/sh4-linux/bin/sh4-linux- help # make -s -j 160 ARCH=sh O=/kisskb/build/linus_se7619_defconfig_sh4-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/sh4-linux/bin/sh4-linux- olddefconfig # make -s -j 160 ARCH=sh O=/kisskb/build/linus_se7619_defconfig_sh4-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/sh4-linux/bin/sh4-linux- Generating include/generated/machtypes.h :1517:2: warning: #warning syscall clone3 not implemented [-Wcpp] In file included from /kisskb/src/arch/sh/include/asm/hw_irq.h:6, from /kisskb/src/include/linux/irq.h:596, from /kisskb/src/include/asm-generic/hardirq.h:17, from /kisskb/src/arch/sh/include/asm/hardirq.h:9, from /kisskb/src/include/linux/hardirq.h:11, from /kisskb/src/include/linux/interrupt.h:11, from /kisskb/src/include/linux/serial_core.h:13, from /kisskb/src/include/linux/serial_sci.h:6, from /kisskb/src/arch/sh/kernel/cpu/sh2/setup-sh7619.c:11: /kisskb/src/include/linux/sh_intc.h:100:63: warning: division 'sizeof (void *) / sizeof (void)' does not compute the number of array elements [-Wsizeof-pointer-div] 100 | #define _INTC_ARRAY(a) a, __same_type(a, NULL) ? 0 : sizeof(a)/sizeof(*a) | ^ /kisskb/src/include/linux/sh_intc.h:105:31: note: in expansion of macro '_INTC_ARRAY' 105 | _INTC_ARRAY(vectors), _INTC_ARRAY(groups), \ | ^~~~~~~~~~~ /kisskb/src/include/linux/sh_intc.h:124:15: note: in expansion of macro 'INTC_HW_DESC' 124 | .hw = INTC_HW_DESC(vectors, groups, mask_regs, \ | ^~~~~~~~~~~~ /kisskb/src/arch/sh/kernel/cpu/sh2/setup-sh7619.c:58:8: note: in expansion of macro 'DECLARE_INTC_DESC' 58 | static DECLARE_INTC_DESC(intc_desc, "sh7619", vectors, NULL, | ^~~~~~~~~~~~~~~~~ /kisskb/src/include/linux/sh_intc.h:100:63: warning: division 'sizeof (void *) / sizeof (void)' does not compute the number of array elements [-Wsizeof-pointer-div] 100 | #define _INTC_ARRAY(a) a, __same_type(a, NULL) ? 0 : sizeof(a)/sizeof(*a) | ^ /kisskb/src/include/linux/sh_intc.h:106:9: note: in expansion of macro '_INTC_ARRAY' 106 | _INTC_ARRAY(mask_regs), _INTC_ARRAY(prio_regs), \ | ^~~~~~~~~~~ /kisskb/src/include/linux/sh_intc.h:124:15: note: in expansion of macro 'INTC_HW_DESC' 124 | .hw = INTC_HW_DESC(vectors, groups, mask_regs, \ | ^~~~~~~~~~~~ /kisskb/src/arch/sh/kernel/cpu/sh2/setup-sh7619.c:58:8: note: in expansion of macro 'DECLARE_INTC_DESC' 58 | static DECLARE_INTC_DESC(intc_desc, "sh7619", vectors, NULL, | ^~~~~~~~~~~~~~~~~ /kisskb/src/include/linux/sh_intc.h:100:63: warning: division 'sizeof (void *) / sizeof (void)' does not compute the number of array elements [-Wsizeof-pointer-div] 100 | #define _INTC_ARRAY(a) a, __same_type(a, NULL) ? 0 : sizeof(a)/sizeof(*a) | ^ /kisskb/src/include/linux/sh_intc.h:107:9: note: in expansion of macro '_INTC_ARRAY' 107 | _INTC_ARRAY(sense_regs), _INTC_ARRAY(ack_regs), \ | ^~~~~~~~~~~ /kisskb/src/include/linux/sh_intc.h:124:15: note: in expansion of macro 'INTC_HW_DESC' 124 | .hw = INTC_HW_DESC(vectors, groups, mask_regs, \ | ^~~~~~~~~~~~ /kisskb/src/arch/sh/kernel/cpu/sh2/setup-sh7619.c:58:8: note: in expansion of macro 'DECLARE_INTC_DESC' 58 | static DECLARE_INTC_DESC(intc_desc, "sh7619", vectors, NULL, | ^~~~~~~~~~~~~~~~~ /kisskb/src/include/linux/sh_intc.h:100:63: warning: division 'sizeof (void *) / sizeof (void)' does not compute the number of array elements [-Wsizeof-pointer-div] 100 | #define _INTC_ARRAY(a) a, __same_type(a, NULL) ? 0 : sizeof(a)/sizeof(*a) | ^ /kisskb/src/include/linux/sh_intc.h:107:34: note: in expansion of macro '_INTC_ARRAY' 107 | _INTC_ARRAY(sense_regs), _INTC_ARRAY(ack_regs), \ | ^~~~~~~~~~~ /kisskb/src/include/linux/sh_intc.h:124:15: note: in expansion of macro 'INTC_HW_DESC' 124 | .hw = INTC_HW_DESC(vectors, groups, mask_regs, \ | ^~~~~~~~~~~~ /kisskb/src/arch/sh/kernel/cpu/sh2/setup-sh7619.c:58:8: note: in expansion of macro 'DECLARE_INTC_DESC' 58 | static DECLARE_INTC_DESC(intc_desc, "sh7619", vectors, NULL, | ^~~~~~~~~~~~~~~~~ Completed OK # rm -rf /kisskb/build/linus_se7619_defconfig_sh4-gcc11 # Build took: 0:00:22.524011