diff options
| author | Xiongfeng Wang <wangxiongfeng2@huawei.com> | 2022-11-16 12:32:04 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-12-02 19:39:59 +0300 |
| commit | fcb2d286362b19c07d5ea85878738e48422067ce (patch) | |
| tree | dfac80a2d2ccae28862a5b615417c0a0944ea9d6 /drivers/spi | |
| parent | 0b6441abfa5d3c193ba8b75c220aa61ba5a0040f (diff) | |
| download | linux-fcb2d286362b19c07d5ea85878738e48422067ce.tar.xz | |
spi: dw-dma: decrease reference count in dw_spi_dma_init_mfld()
[ Upstream commit 804313b64e412a81b0b3389a10e7622452004aa6 ]
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: 7063c0d942a1 ("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>
Diffstat (limited to 'drivers/spi')
| -rw-r--r-- | drivers/spi/spi-dw-dma.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/spi/spi-dw-dma.c b/drivers/spi/spi-dw-dma.c index a09831c62192..32ac8f9068e8 100644 --- a/drivers/spi/spi-dw-dma.c +++ b/drivers/spi/spi-dw-dma.c @@ -127,12 +127,15 @@ static int dw_spi_dma_init_mfld(struct device *dev, struct dw_spi *dws) dw_spi_dma_sg_burst_init(dws); + pci_dev_put(dma_dev); + return 0; free_rxchan: dma_release_channel(dws->rxchan); dws->rxchan = NULL; err_exit: + pci_dev_put(dma_dev); return -EBUSY; } |