diff options
| author | ruanjinjie | 2023-07-24 14:41:08 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2023-09-13 09:42:58 +0200 |
| commit | e351933e4a14b97003622b501581c57e77c1b8a9 (patch) | |
| tree | d109f707f91458cf73db01112f321afa5a197df2 | |
| parent | 43a57ca7dd9073fbeae2cef9e9e61dd80062529f (diff) | |
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: 8d318a50b3d7 ("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>
| -rw-r--r-- | drivers/dma/ste_dma40.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c index f093e08c23b1..3b09fdc507e0 100644 --- a/drivers/dma/ste_dma40.c +++ b/drivers/dma/ste_dma40.c @@ -3597,6 +3597,10 @@ 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) { |