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Revert "Input: rmi4 - fix register descriptor address calculation"

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The register descriptor presence register is a packet register, which
means its bytes share a single RMI address. It does not occupy
consecutive addresses, and the register structure that follows it
is located at the next RMI address (presence_address + 1), not
(presence_address + presence_size).

Revert the incorrect address calculation introduced in commit
a98518e724.

Reported-by: "Barry K. Nathan" <barryn@pobox.com>
Tested-by: "Barry K. Nathan" <barryn@pobox.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Dmitry Torokhov 2026-06-26 17:42:10 -07:00
parent d577e46785
commit d85589879f
1 changed files with 1 additions and 1 deletions
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2
drivers/input/rmi4/rmi_driver.c
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@ -643,7 +643,7 @@ int rmi_read_register_desc(struct rmi_device *d, u16 addr,
ret = rmi_read_block(d, addr, buf, size_presence_reg);
if (ret)
return ret;
addr += size_presence_reg;
++addr;
if (buf[0] == 0) {
if (size_presence_reg < 3)