diff options
| author | Chen Ni <nichen@iscas.ac.cn> | 2026-01-19 09:04:50 +0300 |
|---|---|---|
| committer | Madhavan Srinivasan <maddy@linux.ibm.com> | 2026-04-01 06:51:05 +0300 |
| commit | 1ef8cf10cdbe79823fd6de0f0b93ca996045d1cc (patch) | |
| tree | 63c5f05580586de6399dda5ad2e964d570cb6953 | |
| parent | 6e65886fceb23605eff952d6b1975737b4c4b154 (diff) | |
| download | linux-1ef8cf10cdbe79823fd6de0f0b93ca996045d1cc.tar.xz | |
powerpc/52xx/media5200: Consolidate chained IRQ handler install/remove
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
| -rw-r--r-- | arch/powerpc/platforms/52xx/media5200.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/powerpc/platforms/52xx/media5200.c b/arch/powerpc/platforms/52xx/media5200.c index bc7f83cfec1d..c20ac8010f6d 100644 --- a/arch/powerpc/platforms/52xx/media5200.c +++ b/arch/powerpc/platforms/52xx/media5200.c @@ -176,8 +176,8 @@ static void __init media5200_init_irq(void) of_node_put(fpga_np); - irq_set_handler_data(cascade_virq, &media5200_irq); - irq_set_chained_handler(cascade_virq, media5200_irq_cascade); + irq_set_chained_handler_and_data(cascade_virq, media5200_irq_cascade, + &media5200_irq); return; |