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[ Upstream commit804313b64e] pci_get_device() will increase the reference count for the returned pci_dev. Since 'dma_dev' is only used to filter the channel in dw_spi_dma_chan_filer() after using it we need to call pci_dev_put() to decrease the reference count. Also add pci_dev_put() for the error case. Fixes:7063c0d942("spi/dw_spi: add DMA support") Signed-off-by: Xiongfeng Wang <wangxiongfeng2@huawei.com> Acked-by: Serge Semin <fancer.lancer@gmail.com> Link: https://lore.kernel.org/r/20221116093204.46700-1-wangxiongfeng2@huawei.com Signed-off-by: Mark Brown <broonie@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.