i2c: atr: Fix lockdep for nested ATRs

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When we have an ATR, and another ATR as a subdevice of the first ATR,
we get lockdep warnings for the i2c_atr.lock and
i2c_atr_chan.orig_addrs_lock. This is because lockdep uses a static key
for the locks, and doesn't see the locks of the separate ATR instances
as separate.

Fix this by generating a dynamic lock key per lock instance.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen+renesas@ideasonboard.com>
Signed-off-by: Cosmin Tanislav <demonsingur@gmail.com>
Reviewed-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>

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Tomi Valkeinen 2025-05-07 15:19:07 +03:00 • committed by Wolfram Sang

parent 7e6f4a0a75

commit ec8c1b92ea

1 changed files with 18 additions and 3 deletions

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drivers/i2c/i2c-atr.c

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