[PATCH v3 0/2] media: ipu-bridge: survive module unload and reuse the software nodes on rebind

[D. Manresa]

Hello,

v3 is a rebase of the v2 series onto media/next; no functional change.

1/2 no longer applied there: the endpoint properties are now written
through the IPU_BRIDGE_NEXT_PROPERTY() indices and a local names
pointer, so the link-frequencies hunk had to be rewritten against that
shape. 2/2 applied unchanged.

While rebasing I noticed that commit a20c843c9bc4 ("media: ipu-bridge:
Keep the clock-noncontinuous property name out of rodata") already
fixed the third reference of this kind, the one I had reported
separately. The two remaining ones this patch moves - the
link-frequencies *values* and the "lens-focus" property *name* - are
disjoint from it, and 1/2 now says so.

Testing: the v1/v2 testing stands, on a Surface Pro 7+ (IPU6, OV5693 +
OV8865 + OV7251) running the equivalent change on 6.19: the PCI remove
-> module unload -> rescan -> modprobe sequence, fatal today (-EEXIST),
completes cleanly with the series, twice in a row, with all three
cameras streaming after each rebind. The rebased files here are
compile-tested only (gcc-13, no new warnings): that machine is not
running a media/next kernel, and it is about to leave my hands, so I
cannot promise a fresh run on it. Other Surface Pro 7+, Pro 8 and Go 4
owners are testing this hardware in
https://github.com/linux-surface/linux-surface/pull/2252 if a retest on
next is wanted before applying.

Changes since v2:
- rebased onto media/next (1/2 rewritten for the new property
  indexing); no functional change;
- 1/2 commit message notes a20c843c9bc4 and what is left after it.

v2: https://lore.kernel.org/linux-media/20260831140304.45940-1-dmanresa@xxxxxxxxx/

Changes since v1:
- shortened the 2/2 commit message;
- dev_info() -> dev_dbg() on the reuse path;
- Assisted-by: tag per Documentation/process/coding-assistants.rst.

Thanks,
D. Manresa

D. Manresa (2):
  media: ipu-bridge: don't reference the module image from software
    nodes
  media: ipu-bridge: reuse the software nodes on rebind

 drivers/media/pci/intel/ipu-bridge.c | 38 +++++++++++++++++++++++++---
 include/media/ipu-bridge.h           |  9 +++++++
 2 files changed, 44 insertions(+), 3 deletions(-)

-- 
2.43.0