Messages in this thread Patch in this message | | | From | Ruan Jinjie <> | Subject | [PATCH -next] dmaengine: ste_dma40: Add missing IRQ check in d40_probe | Date | Mon, 24 Jul 2023 14:41:08 +0000 |
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From: ruanjinjie <ruanjinjie@huawei.com>
Check for the return value of platform_get_irq(): if no interrupt is specified, it wouldn't make sense to call request_irq().
Fixes: 8d318a50b3d7 ("DMAENGINE: Support for ST-Ericssons DMA40 block v3") Signed-off-by: Ruan Jinjie <ruanjinjie@huawei.com> --- drivers/dma/ste_dma40.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c index 825001bde42c..89e82508c133 100644 --- a/drivers/dma/ste_dma40.c +++ b/drivers/dma/ste_dma40.c @@ -3590,6 +3590,10 @@ 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) { -- 2.34.1
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