Commit fe5dd395 authored Jul 24, 2023 by ruanjinjie Committed by Greg Kroah-Hartman Sep 23, 2023

dmaengine: ste_dma40: Add missing IRQ check in d40_probe



[ Upstream commit c05ce6907b3d6e148b70f0bb5eafd61dcef1ddc1 ]

Check for the return value of platform_get_irq(): if no interrupt
is specified, it wouldn't make sense to call request_irq().

Fixes: 8d318a50 ("DMAENGINE: Support for ST-Ericssons DMA40 block v3")
Signed-off-by: Ruan Jinjie <ruanjinjie@huawei.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20230724144108.2582917-1-ruanjinjie@huawei.com


Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

parent e0f2d85e

drivers/dma/ste_dma40.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -3599,6 +3599,10 @@ static int __init d40_probe(struct platform_device *pdev)
		spin_lock_init(&base->lcla_pool.lock);

		base->irq = platform_get_irq(pdev, 0);
		if (base->irq < 0) {
		ret = base->irq;
		goto destroy_cache;
		}

		ret = request_irq(base->irq, d40_handle_interrupt, 0, D40_NAME, base);
		if (ret) {