[PATCH 0/2] media: qcom: camss: vfe-17x: fix wm_done dispatch and silence unmapped-WM noise

[Herman van Hazendonk <github.com@herrie.org>]

The vfe-17x wm_done IRQ path has two independent bugs fixed here:

PATCH 1/2 fixes a gate condition in the wm_done dispatch loop that
used a constant BIT(9) — STATUS_0_IMAGE_MASTER_PING_PONG(1) — instead
of the per-WM macro STATUS_0_IMAGE_MASTER_PING_PONG(wm). As a result
only write master 1 ever had its wm_done callback fired; every other
write master's interrupt was silently dropped, stalling any video
stream not routed through WM 1.

PATCH 2/2 moves the VFE_LINE_NONE check ahead of the output spinlock
in vfe_isr_wm_done(). Write masters allocated to statistics or other
secondary paths are not mapped to an output line; the existing code
took the spinlock before noticing this and printed a rate-limited
error each time. The fix returns silently before acquiring the lock,
eliminating harmless but noisy dmesg spam on such configurations.

Herman van Hazendonk (2):
  media: qcom: camss: vfe-17x: dispatch wm_done per write master
  media: qcom: camss: vfe-17x: silence wm-done IRQ on unmapped WMs

 .../media/platform/qcom/camss/camss-vfe-17x.c | 31 ++++++++++++++-----
 1 file changed, 23 insertions(+), 8 deletions(-)

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2.43.0