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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: 8d318a50b3 ("DMAENGINE: Support for ST-Ericssons DMA40 block v3")
Signed-off-by: Ruan Jinjie <[email protected]>
Reviewed-by: Linus Walleij <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Vinod Koul <[email protected]>
Signed-off-by: Sasha Levin <[email protected]>
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1 changed files with 4 additions and 0 deletions
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@ -3599,6 +3599,10 @@ static int __init d40_probe(struct platform_device *pdev)
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spin_lock_init(&base->lcla_pool.lock);
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base->irq = platform_get_irq(pdev, 0);
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if (base->irq < 0) {
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ret = base->irq;
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goto destroy_cache;
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}
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ret = request_irq(base->irq, d40_handle_interrupt, 0, D40_NAME, base);
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if (ret) {
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