diff options
| author | ruanjinjie <ruanjinjie@huawei.com> | 2023-07-24 17:41:08 +0300 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2023-08-21 08:42:16 +0300 |
| commit | c05ce6907b3d6e148b70f0bb5eafd61dcef1ddc1 (patch) | |
| tree | 24e55068b210a6e5dbff76ddec47eead6094e589 /drivers/dma | |
| parent | 1fbda5f4c7c1c8bd51cd3bc3d2ff19176c696b74 (diff) | |
| download | linux-c05ce6907b3d6e148b70f0bb5eafd61dcef1ddc1.tar.xz | |
dmaengine: ste_dma40: Add missing IRQ check in d40_probe
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>
Diffstat (limited to 'drivers/dma')
| -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 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) { |