linux-kernel - [PATCH 0/3] ata: Module parameter clean-ups for pata_legacy and pata

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Date:   Sun, 21 Mar 2021 20:55:17 +0100 (CET)
From:   "Maciej W. Rozycki" <macro@...am.me.uk>
To:     linux-ide@...r.kernel.org, linux-doc@...r.kernel.org,
        linux-kernel@...r.kernel.org
cc:     Jens Axboe <axboe@...nel.dk>, Christoph Hellwig <hch@....de>
Subject: [PATCH 0/3] ata: Module parameter clean-ups for pata_legacy and
 pata_platform

Hi,

 In the course of looking into Christoph's recent proposal to drop legacy 
IDE drivers I have come across a number of issues with module parameters 
of the pata_legacy and pata_platform drivers: errors in documentation 
present in the comment form, missing user-visible documentation, and 
unconditional poking at ISA I/O ports in pata_legacy that isn't there with 
the old ide-generic driver (the lack of `probe_mask' parameter).

 Here's a small patch series that addresses these issues.  Overall I 
find the design of the pata_legacy driver's options a bit messy, e.g. the 
`all' vs the `probe_all' parameter, and the interpretation of masks where 
bits correspond to probed PATA locations in a particular system (rather 
than either all known or all existing), but it's been there long enough I 
think we have to keep it, so I merely tried to describe the current 
semantics.  See the individual change descriptions for details.

 The changes have been run-time verified with an EISA system and a single 
ISA PATA adapter at the usual primary I/O location.  They have also been 
verified (mainly for the correctness of MODULE_PARM_DESC use) with an 
x86/PC build (for pata_legacy) and a MIPS/SWARM build (for pata_platform).

 Please apply.

  Maciej