linux-kernel - [PATCH v3 0/3] Additional miscdevice fops parameters

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Message-ID: <20241210-miscdevice-file-param-v3-0-b2a79b666dc5@google.com>
Date: Tue, 10 Dec 2024 09:38:59 +0000
From: Alice Ryhl <aliceryhl@...gle.com>
To: Arnd Bergmann <arnd@...db.de>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: Alexander Viro <viro@...iv.linux.org.uk>, Christian Brauner <brauner@...nel.org>, Jan Kara <jack@...e.cz>, 
	Miguel Ojeda <ojeda@...nel.org>, Alex Gaynor <alex.gaynor@...il.com>, 
	Boqun Feng <boqun.feng@...il.com>, Gary Guo <gary@...yguo.net>, 
	"Björn Roy Baron" <bjorn3_gh@...tonmail.com>, Benno Lossin <benno.lossin@...ton.me>, 
	Andreas Hindborg <a.hindborg@...nel.org>, Trevor Gross <tmgross@...ch.edu>, Lee Jones <lee@...nel.org>, 
	Danilo Krummrich <dakr@...nel.org>, rust-for-linux@...r.kernel.org, 
	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org, 
	Alice Ryhl <aliceryhl@...gle.com>
Subject: [PATCH v3 0/3] Additional miscdevice fops parameters

This could not land with the base miscdevice abstractions due to the
dependency on File.

The last two patches enable you to use the `dev_*` macros to print
messages in miscdevice drivers.

Signed-off-by: Alice Ryhl <aliceryhl@...gle.com>
---
Changes in v3:
- Fix build error in fops->open() patch.
- Improve wording of some comments in fops->open() patch.
- Update commit message with more info on why `struct miscdevice` is
  only made available in fops->open() and not other hooks.
- Include Lee's device accessor patch, since it's a needed component to
  use the `dev_*` printing macros with miscdevice.
- Link to v2: https://lore.kernel.org/r/20241209-miscdevice-file-param-v2-0-83ece27e9ff6@google.com

Changes in v2:
- Access the `struct miscdevice` from fops->open().
- Link to v1: https://lore.kernel.org/r/20241203-miscdevice-file-param-v1-1-1d6622978480@google.com

---
Alice Ryhl (2):
      rust: miscdevice: access file in fops
      rust: miscdevice: access the `struct miscdevice` from fops->open()

Lee Jones (1):
      rust: miscdevice: Provide accessor to pull out miscdevice::this_device

 rust/kernel/miscdevice.rs | 66 +++++++++++++++++++++++++++++++++++++++--------
 1 file changed, 55 insertions(+), 11 deletions(-)
---
base-commit: fac04efc5c793dccbd07e2d59af9f90b7fc0dca4
change-id: 20241203-miscdevice-file-param-5df7f75861da

Best regards,
-- 
Alice Ryhl <aliceryhl@...gle.com>