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| author | Alexey Khoroshilov <khoroshilov@ispras.ru> | 2022-06-13 01:23:58 +0300 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2022-06-16 09:04:09 -0700 |
| commit | f7a03501b090f8c5f9ecb08420cda0b168667004 (patch) | |
| tree | b0f05c2f158b9a46d43a1e5c5e67259c3631b84a /drivers/dma/stm32-mdma.c | |
| parent | 5dc8638872ef0deeae1371a9e2d551920870f76a (diff) | |
| download | linux-f7a03501b090f8c5f9ecb08420cda0b168667004.tar.bz2 | |
dmaengine: stm32-mdma: Remove dead code in stm32_mdma_irq_handler()
Local variable chan is initialized by an address of element of chan array
that is part of stm32_mdma_device struct, so it does not make sense to
compare chan with NULL.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Fixes: a4ffb13c8946 ("dmaengine: Add STM32 MDMA driver")
Reviewed-by: Amelie Delaunay <amelie.delaunay@foss.st.com>
Link: https://lore.kernel.org/r/1655072638-9103-1-git-send-email-khoroshilov@ispras.ru
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma/stm32-mdma.c')
| -rw-r--r-- | drivers/dma/stm32-mdma.c | 5 |
1 files changed, 0 insertions, 5 deletions
diff --git a/drivers/dma/stm32-mdma.c b/drivers/dma/stm32-mdma.c index caf0cce8f528..b11927ed4367 100644 --- a/drivers/dma/stm32-mdma.c +++ b/drivers/dma/stm32-mdma.c @@ -1328,12 +1328,7 @@ static irqreturn_t stm32_mdma_irq_handler(int irq, void *devid) return IRQ_NONE; } id = __ffs(status); - chan = &dmadev->chan[id]; - if (!chan) { - dev_warn(mdma2dev(dmadev), "MDMA channel not initialized\n"); - return IRQ_NONE; - } /* Handle interrupt for the channel */ spin_lock(&chan->vchan.lock); |