[PATCH v2 0/3] driver core: Constify the signature of device_show/store_*()

Thomas Weißschuh linux at weissschuh.net
Sun Sep 6 22:45:00 PDT 2026


Prepare for the constification of 'struct dev_ext_attribute' instances
by changing the signature of the standard callback functions.
The first two patches prepare some drivers to handle both the const and
non-const callback variants.

Intended for the driver-core tree.

Signed-off-by: Thomas Weißschuh <linux at weissschuh.net>
---
Changes in v2:
- Rebase on v7.3-rc1.
- Cover a few more drivers in drivers/perf/.
- Link to v1: https://patch.msgid.link/20260714-sysfs-const-attr-dev_ext_attr-v1-0-6b2c0435d621@weissschuh.net

---
Thomas Weißschuh (3):
      x86/mce: Use __DEVICE_ATTR() macro to initialize dev_ext_attribute
      drivers: perf: Use __DEVICE_ATTR() macro to initialize dev_ext_attribute
      driver core: Constify the signature of device_show/store_*()

 arch/powerpc/perf/hv-24x7.c                 |  2 +-
 arch/x86/kernel/cpu/mce/core.c              |  6 +++---
 drivers/base/core.c                         | 30 ++++++++++++++---------------
 drivers/perf/alibaba_uncore_drw_pmu.c       |  2 +-
 drivers/perf/arm-cci.c                      |  2 +-
 drivers/perf/arm-ccn.c                      |  2 +-
 drivers/perf/arm_cspmu/arm_cspmu.h          |  2 +-
 drivers/perf/arm_dsu_pmu.c                  |  2 +-
 drivers/perf/arm_spe_pmu.c                  |  6 +++---
 drivers/perf/cxl_pmu.c                      | 10 +++++-----
 drivers/perf/fsl_imx8_ddr_perf.c            |  2 +-
 drivers/perf/fujitsu_uncore_pmu.c           |  2 +-
 drivers/perf/hisilicon/hisi_pcie_pmu.c      |  2 +-
 drivers/perf/hisilicon/hisi_uncore_pmu.h    |  6 +++---
 drivers/perf/hisilicon/hns3_pmu.c           |  6 +++---
 drivers/perf/nvidia_t410_c2c_pmu.c          |  2 +-
 drivers/perf/nvidia_t410_cmem_latency_pmu.c | 12 ++++++------
 drivers/perf/qcom_l3_pmu.c                  |  8 ++++----
 drivers/perf/starfive_starlink_pmu.c        |  2 +-
 drivers/perf/xgene_pmu.c                    |  2 +-
 include/linux/device.h                      | 14 +++++++-------
 21 files changed, 61 insertions(+), 61 deletions(-)
---
base-commit: cee9395acd8043be0644b25c34bfa86623f2b935
change-id: 20260712-sysfs-const-attr-dev_ext_attr-dbf669fdfd4e

Best regards,
--  
Thomas Weißschuh <linux at weissschuh.net>




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