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Commit a5a5ed7c authored by Chris Lew's avatar Chris Lew
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soc: qcom: qsee_ipc_irq: Sanitize IRQ desc 



There is a chance that the irq_to_desc function will return NULL if the
client unregisters their IRQ. Check if desc is NULL before calling the
IRQ_HANDLER.

Change-Id: I10950e19138eb8e6f7673f61b7de78696e4c2c27
Signed-off-by: default avatarChris Lew <clew@codeaurora.org>
parent 55e5efd5

drivers/soc/qcom/qsee_ipc_irq.c

+2 −1
Original line number Original line Diff line number Diff line
@@ -100,6 +100,7 @@ static irqreturn_t qsee_intr(int irq, void *data) 




		irq_pin = irq_find_mapping(qirq->domain, to_hwirq(i, j));

		irq_pin = irq_find_mapping(qirq->domain, to_hwirq(i, j));

		desc = irq_to_desc(irq_pin);

		desc = irq_to_desc(irq_pin);

		if (desc)

			handle_simple_irq(desc);

			handle_simple_irq(desc);

		regmap_write(qirq->regmap, bank->data->clear, BIT(j));

		regmap_write(qirq->regmap, bank->data->clear, BIT(j));

	}

	}