powerpc/52xx/media5200: Consolidate chained IRQ handler install/remove

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The driver currently sets the handler data and the chained handler in
two separate steps. This creates a theoretical race window where an
interrupt could fire after the handler is set but before the data is
assigned, leading to a NULL pointer dereference.

Replace the two calls with irq_set_chained_handler_and_data() to set
both the handler and its data atomically under the irq_desc->lock.

Signed-off-by: Chen Ni <nichen@iscas.ac.cn>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20260119060450.889119-1-nichen@iscas.ac.cn

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Chen Ni 2026-01-19 14:04:50 +08:00 • committed by Madhavan Srinivasan

parent 6e65886fce

commit 1ef8cf10cd

1 changed files with 2 additions and 2 deletions

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arch/powerpc/platforms/52xx/media5200.c

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