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dmaengine: fsl-edma: fix wrong pointer check in fsl_edma3_attach_pd()
[ Upstream commit bffa721 ] device_link_add() returns NULL pointer not PTR_ERR() when it fails, so replace the IS_ERR() check with NULL pointer check. Fixes: 72f5801 ("dmaengine: fsl-edma: integrate v3 support") Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> Link: https://lore.kernel.org/r/20231129090000.841440-1-yangyingliang@huaweicloud.com Signed-off-by: Vinod Koul <vkoul@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
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