[PATCH v2 0/2] Add struct_offsetofend() for pointer arithmetic

[Bence Csokas <bence.csokas@arm.com>]

A common usage pattern for offsetof() is the following:

  offsetof(typeof(*ptr), member)

This is exactly the definition of struct_offset(). Some call sites use
offsetofend() instead of offsetof(). Add this variant, then replace all
call sites with the corresponding macros.

Signed-off-by: Bence Csokas <bence.csokas@arm.com>
---
Changes in v2:
- Use struct_offset() instead of reinventing it
- Rename offsetofendp() to struct_offsetofend()
- Merge the two treewide patches
- Link to v1: https://patch.msgid.link/20261105-offsetof-v1-0-4153f5c10edc@arm.com

To: Kees Cook <kees@kernel.org>
To: "Gustavo A. R. Silva" <gustavoars@kernel.org>
To: Marcel Holtmann <marcel@holtmann.org>
To: Luiz Augusto von Dentz <luiz.dentz@gmail.com>
To: Sumit Semwal <sumit.semwal@linaro.org>
To: Christian König <christian.koenig@amd.com>
To: Philipp Stanner <phasta@kernel.org>
To: Sudeep Holla <sudeep.holla@kernel.org>
To: Cristian Marussi <cristian.marussi@arm.com>
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To: Maxime Ripard <mripard@kernel.org>
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To: Andrew Lunn <andrew+netdev@lunn.ch>
To: "David S. Miller" <davem@davemloft.net>
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Cc: linux-hardening@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-bluetooth@vger.kernel.org
Cc: linux-media@vger.kernel.org
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Cc: linux-scsi@vger.kernel.org

---
Bence Csokas (2):
      stddef: Add offsetofend() variant of struct_offset()
      treewide: Use struct_offset()

 drivers/bluetooth/btmrvl_main.c                    | 12 +++++-----
 drivers/dma-buf/dma-resv.c                         |  2 +-
 drivers/firmware/arm_scmi/base.c                   |  2 +-
 drivers/gpu/drm/drm_edid.c                         | 26 +++++++++++-----------
 drivers/gpu/drm/i915/gem/i915_gem_object.c         |  4 ++--
 drivers/gpu/drm/i915/i915_active.c                 |  2 +-
 drivers/gpu/drm/i915/i915_sw_fence_work.c          |  2 +-
 .../gpu/drm/nouveau/nvkm/subdev/gsp/rm/r535/gsp.c  |  2 +-
 drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c            | 12 +++++-----
 drivers/infiniband/hw/bnxt_re/qplib_fp.c           |  2 +-
 drivers/infiniband/hw/hns/hns_roce_cq.c            |  4 ++--
 drivers/infiniband/hw/hns/hns_roce_qp.c            |  6 ++---
 drivers/media/usb/uvc/uvc_v4l2.c                   |  4 ++--
 drivers/net/hyperv/rndis_filter.c                  |  2 +-
 drivers/net/wireless/intel/iwlwifi/iwl-drv.c       |  2 +-
 drivers/net/wireless/intel/iwlwifi/mvm/rs-fw.c     |  2 +-
 drivers/net/wireless/intel/iwlwifi/mvm/rs.c        |  2 +-
 .../net/wireless/intel/iwlwifi/pcie/ctxt-info-v2.c |  5 ++---
 drivers/net/wireless/realtek/rtl8xxxu/core.c       |  2 +-
 drivers/net/wireless/realtek/rtw88/fw.c            |  2 +-
 drivers/net/wireless/realtek/rtw89/core.c          |  2 +-
 drivers/net/wireless/realtek/rtw89/fw.c            |  8 +++----
 drivers/net/wireless/virtual/mac80211_hwsim_main.c |  4 ++--
 drivers/platform/chrome/cros_ec_lightbar.c         |  4 ++--
 drivers/scsi/qla2xxx/qla_gs.c                      |  2 +-
 drivers/scsi/qla2xxx/qla_mbx.c                     |  2 +-
 drivers/scsi/qla2xxx/qla_os.c                      |  2 +-
 drivers/scsi/qla2xxx/qla_tmpl.c                    |  4 ++--
 drivers/scsi/scsi_transport_fc.c                   |  2 +-
 include/linux/overflow.h                           | 12 ++++++++++
 30 files changed, 75 insertions(+), 64 deletions(-)
---
base-commit: 9d66f26fefacebfeed15de31c1123451a17ff119
change-id: 20261105-offsetof-f62aa6348f0d

Best regards,
--  
Bence Csokas <bence.csokas@arm.com>