Thread (7 messages) 7 messages, 2 authors, 2022-11-30

Re: [resend, PATCH net-next v1 2/2] net: thunderbolt: Use separate header data type for the Rx

From: Mika Westerberg <mika.westerberg@linux.intel.com>
Date: 2022-11-30 11:10:44
Also in: lkml

On Wed, Nov 30, 2022 at 12:51:06PM +0200, Andy Shevchenko wrote:
On Wed, Nov 30, 2022 at 09:46:16AM +0200, Mika Westerberg wrote:
quoted
On Tue, Nov 29, 2022 at 06:13:59PM +0200, Andy Shevchenko wrote:
quoted
The same data type structure is used for bitwise operations and
regular ones. It makes sparse unhappy, for example:

  .../thunderbolt.c:718:23: warning: cast to restricted __le32

  .../thunderbolt.c:953:23: warning: incorrect type in initializer (different base types)
  .../thunderbolt.c:953:23:    expected restricted __wsum [usertype] wsum
  .../thunderbolt.c:953:23:    got restricted __be32 [usertype]

Split the header to bitwise one and specific for Rx to make sparse
happy. Assure the layout by involving static_assert() against size
and offsets of the member of the structures.
quoted
I would much rather keep the humans reading this happy than add 20+
lines just to silence a tool. Unless this of course is some kind of a
real bug.
Actually, changing types to bitwise ones reduces the sparse noise
(I will double check this) without reducing readability.
Would it be accepted?
Sure if it makes it more readable and does not add too many lines :)
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