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dmaengine: ste_dma40: Add missing IRQ check in d40_probe
[ Upstream commit c05ce69 ] Check for the return value of platform_get_irq(): if no interrupt is specified, it wouldn't make sense to call request_irq(). Fixes: 8d318a5 ("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>
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