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dmaengine: ste_dma40: Add missing IRQ check in d40_probe 

BugLink: https://bugs.launchpad.net/bugs/2040284

[ 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: 8d318a50b3 ("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>
Signed-off-by: Roxana Nicolescu <roxana.nicolescu@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
This commit is contained in:
ruanjinjie 2023-07-24 14:41:08 +00:00 committed by Roxana Nicolescu
parent 0793dc994d
commit c1011f1ad1
1 changed files with 4 additions and 0 deletions
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4
drivers/dma/ste_dma40.c
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@ -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) {