This patch series is to fix bugs and improve codes regarding various driver core device iterating APIs

Signed-off-by: Zijun Hu quic_zijuhu@quicinc.com --- Changes in v5: - Add comments back and correct tile and commit messages for patch 8/8. - Link to v4: https://lore.kernel.org/r/20241218-class_fix-v4-0-3c40f098356b@quicinc.com

Changes in v4: - Squich patches 3-5 into one based on Jonathan and Fan comments. - Add one more patch - Link to v3: https://lore.kernel.org/r/20241212-class_fix-v3-0-04e20c4f0971@quicinc.com

Changes in v3: - Correct commit message, add fix tag, and correct pr_crit() message for 1st patch - Add more patches regarding driver core device iterating APIs. - Link to v2: https://lore.kernel.org/r/20241112-class_fix-v2-0-73d198d0a0d5@quicinc.com

Changes in v2: - Remove both fix and stable tag for patch 1/3 - drop patch 3/3 - Link to v1: https://lore.kernel.org/r/20241105-class_fix-v1-0-80866f9994a5@quicinc.com

--- Zijun Hu (8): driver core: class: Fix wild pointer dereferences in API class_dev_iter_next() blk-cgroup: Fix class @block_class's subsystem refcount leakage driver core: Move true expression out of if condition in 3 device finding APIs driver core: Rename declaration parameter name for API device_find_child() cluster driver core: Correct parameter check for API device_for_each_child_reverse_from() driver core: Correct API device_for_each_child_reverse_from() prototype driver core: Introduce device_iter_t for device iterating APIs driver core: Move two simple APIs for finding child device to header

block/blk-cgroup.c | 1 + drivers/base/bus.c | 9 +++++--- drivers/base/class.c | 11 ++++++++-- drivers/base/core.c | 49 +++++++++---------------------------------- drivers/base/driver.c | 9 +++++--- drivers/cxl/core/hdm.c | 2 +- drivers/cxl/core/region.c | 2 +- include/linux/device.h | 46 +++++++++++++++++++++++++++++++--------- include/linux/device/bus.h | 7 +++++-- include/linux/device/class.h | 4 ++-- include/linux/device/driver.h | 2 +- 11 files changed, 78 insertions(+), 64 deletions(-) --- base-commit: 78d4f34e2115b517bcbfe7ec0d018bbbb6f9b0b8 change-id: 20241104-class_fix-f176bd9eba22 prerequisite-change-id: 20241201-const_dfc_done-aaec71e3bbea:v5 prerequisite-patch-id: 536aa56c0d055f644a1f71ab5c88b7cac9510162 prerequisite-patch-id: 39b0cf088c72853d9ce60c9e633ad2070a0278a8 prerequisite-patch-id: 60b22c42b67ad56a3d2a7b80a30ad588cbe740ec prerequisite-patch-id: 119a167d7248481987b5e015db0e4fdb0d6edab8 prerequisite-patch-id: 133248083f3d3c57beb16473c2a4c62b3abc5fd0 prerequisite-patch-id: 4cda541f55165650bfa69fb19cbe0524eff0cb85 prerequisite-patch-id: 2b4193c6ea6370c07e6b66de04be89fb09448f54 prerequisite-patch-id: 73c675db18330c89fd8ca4790914d1d486ce0db8 prerequisite-patch-id: 88c50fc851fd7077797fd4e63fb12966b1b601bd prerequisite-patch-id: 47b93916c1b5fb809d7c99aeaa05c729b1af01c5 prerequisite-patch-id: 5b58c0292ea5a5e37b08e2c8287d94df958128db prerequisite-patch-id: 52ffb42b5aae69cae708332e0ddc7016139999f1

Best regards,