[PATCH 0/8] i2c: convert i2c_smbus_read_block_data() users to pass buffer length

[Dmitry Torokhov <dmitry.torokhov@gmail.com>]

Convert callers of i2c_smbus_read_block_data() across input, ACPI,
IPMI, platform, and power supply drivers to pass destination buffer
sizes, adopting the 4-argument form introduced in commit 68f382641f8c
("i2c: smbus: make i2c_smbus_read_block_data() safer").

Because the prerequisite commit 68f382641f8c is in mainline now,
subsystem maintainers are encouraged to pick up their respective
patches directly into their trees.

The hwmon subsystem conversions will be sent out in a separate series.

In cyapa_gen3 and rmi_smbus, passing the requested chunk size bounds
the transfer and avoids potential out-of-bounds writes when reading
blocks smaller than the SMBus maximum of 32 bytes.

In vexia_atla10_ec, the redundant intermediate bounce buffer and
memcpy() are removed so the response is read directly into the caller
buffer.

Additional conversions update callers in ipmi_ssif, i2c-core-acpi,
elan_i2c_smbus, and sbs-battery to provide explicit buffer lengths,
and update the prototype in Documentation/i2c/writing-clients.rst.

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
---
Dmitry Torokhov (8):
      i2c: acpi: use 4-argument i2c_smbus_read_block_data()
      i2c: docs: update i2c_smbus_read_block_data() prototype in writing-clients
      Input: cyapa - use 4-argument i2c_smbus_read_block_data()
      Input: elan_i2c - use 4-argument i2c_smbus_read_block_data()
      Input: synaptics-rmi4 - use 4-argument i2c_smbus_read_block_data()
      ipmi: ssif: use 4-argument i2c_smbus_read_block_data()
      platform/x86: x86-android-tablets: use 4-argument i2c_smbus_read_block_data()
      power: supply: sbs-battery: use 4-argument i2c_smbus_read_block_data()

 Documentation/i2c/writing-clients.rst              |  2 +-
 drivers/char/ipmi/ipmi_ssif.c                      | 39 ++++++++++++----------
 drivers/i2c/i2c-core-acpi.c                        |  2 +-
 drivers/input/mouse/cyapa_gen3.c                   |  8 +++--
 drivers/input/mouse/elan_i2c_smbus.c               | 36 ++++++++++++--------
 drivers/input/rmi4/rmi_smbus.c                     |  4 +--
 .../x86/x86-android-tablets/vexia_atla10_ec.c      |  4 +--
 drivers/power/supply/sbs-battery.c                 |  8 +++--
 8 files changed, 60 insertions(+), 43 deletions(-)
---
base-commit: 20a33c6b6cbe7e4805dfb6cd68816937443aa148
change-id: 20261022-i2c-smbus-read-block-data-b043550b8943

Thanks.

-- 
Dmitry