6.1-stable review patch. If anyone has any objections, please let me know.
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From: Jorge Ramirez-Ortiz jorge.ramirez@oss.qualcomm.com
commit 3200144a2fa4209dc084a19941b9b203b43580f0 upstream.
Make sure the interrupt handler is initialized before the interrupt is registered.
If the IRQ is registered before hfi_create(), it's possible that an interrupt fires before the handler setup is complete, leading to a NULL dereference.
This error condition has been observed during system boot on Rb3Gen2.
Fixes: af2c3834c8ca ("[media] media: venus: adding core part and helper functions") Cc: stable@vger.kernel.org Signed-off-by: Jorge Ramirez-Ortiz jorge.ramirez@oss.qualcomm.com Reviewed-by: Bryan O'Donoghue bryan.odonoghue@linaro.org Reviewed-by: Vikash Garodia quic_vgarodia@quicinc.com Reviewed-by: Dikshita Agarwal quic_dikshita@quicinc.com Tested-by: Dikshita Agarwal quic_dikshita@quicinc.com # RB5 Signed-off-by: Bryan O'Donoghue bod@kernel.org Signed-off-by: Hans Verkuil hverkuil@xs4all.nl Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/media/platform/qcom/venus/core.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)
--- a/drivers/media/platform/qcom/venus/core.c +++ b/drivers/media/platform/qcom/venus/core.c @@ -333,13 +333,13 @@ static int venus_probe(struct platform_d INIT_DELAYED_WORK(&core->work, venus_sys_error_handler); init_waitqueue_head(&core->sys_err_done);
- ret = devm_request_threaded_irq(dev, core->irq, hfi_isr, venus_isr_thread, - IRQF_TRIGGER_HIGH | IRQF_ONESHOT, - "venus", core); + ret = hfi_create(core, &venus_core_ops); if (ret) goto err_core_put;
- ret = hfi_create(core, &venus_core_ops); + ret = devm_request_threaded_irq(dev, core->irq, hfi_isr, venus_isr_thread, + IRQF_TRIGGER_HIGH | IRQF_ONESHOT, + "venus", core); if (ret) goto err_core_put;