Re: [PATCH 5.15 000/410] 5.15.202-rc2 review

[Nathan Chancellor <nathan@kernel.org>]

On Tue, Mar 17, 2026 at 08:39:16AM +0100, Greg Kroah-Hartman wrote:
> Wait, I removed them all, as that should have fixed the issue (I removed
> the offending commit that was originally causing the build problem
> here.)
> 
> Nathan, what errors are you seeing now?  None of these changes are in a
> release, and I don't see any i3c patches in the current queue.

Right, you did drop those changes back in January. However, Sasha added some of
those i3c patches back in 5.15.202.

I see

  $ git show -s --format='%h ("%s")' HEAD
  91d48252ad4b ("Linux 5.15.202")

  $ git log --format=oneline v5.15.201..v5.15.202 drivers/i3c
  cde3d9035e8afcb3b54aa233c51a0babb5013c67 i3c: master: svc: Initialize 'dev' to NULL in svc_i3c_master_ibi_isr()
  6cae2af141da60a68f9e733f69821c3ea457b0c0 i3c: Move device name assignment after i3c_bus_init
  acbd89719cb195143b5fc610c82e18f887631eaf i3c: remove i2c board info from i2c_dev_desc

  $ make -skj"$(nproc)" ARCH=x86_64 LLVM=1 mrproper allmodconfig drivers/i3c/master.o
  drivers/i3c/master.c:2203:3: error: variable 'i2cdev' is uninitialized when used here [-Werror,-Wuninitialized]
   2203 |                 i2cdev->dev = i2c_new_client_device(adap, &i2cboardinfo->base);
        |                 ^~~~~~
  ...

which is resolved by commit 6cbf8b38dfe3 ("i3c: fix uninitialized
variable use in i2c setup") upstream, a fix of commit 31b9887c7258
("i3c: remove i2c board info from i2c_dev_desc"), which was backported
in 5.15.202, as you can see above.

I merely brought up what happened in January because that patch was
already flagged as excessive but I guess it was a stable-dep for a
different i3c backport back then.

Hopefully that makes sense, let me know if not.

Cheers,
Nathan