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a697ae6ea5
linux/sound/soc
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Xiyu Yang a697ae6ea5
ASoC: davinci-mcasp: Fix dma_chan refcnt leak when getting dma type 
davinci_mcasp_get_dma_type() invokes dma_request_chan(), which returns a
reference of the specified dma_chan object to "chan" with increased
refcnt.

When davinci_mcasp_get_dma_type() returns, local variable "chan" becomes
invalid, so the refcount should be decreased to keep refcount balanced.

The reference counting issue happens in one exception handling path of
davinci_mcasp_get_dma_type(). When chan device is NULL, the function
forgets to decrease the refcnt increased by dma_request_chan(), causing
a refcnt leak.

Fix this issue by calling dma_release_channel() when chan device is
NULL.

Signed-off-by: Xiyu Yang <xiyuyang19@fudan.edu.cn>
Signed-off-by: Xin Tan <tanxin.ctf@gmail.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Link: https://lore.kernel.org/r/1587818916-38730-1-git-send-email-xiyuyang19@fudan.edu.cn
Signed-off-by: Mark Brown <broonie@kernel.org>
2020-04-28 13:33:56 +01:00
..
adi
amd ASoC: amd: Fix button configuration 2020-04-14 12:59:13 +01:00
atmel ASoC: atmel: use asoc_rtd_to_cpu() / asoc_rtd_to_codec() macro for DAI pointer 2020-03-27 14:44:31 +00:00
au1x ASoC: au1x: use asoc_rtd_to_cpu() / asoc_rtd_to_codec() macro for DAI pointer 2020-03-27 14:44:32 +00:00
bcm ASoC: bcm: Fix pointer cast warning 2020-03-30 15:32:34 +01:00
cirrus ASoC: cirrus: use asoc_rtd_to_cpu() / asoc_rtd_to_codec() macro for DAI pointer 2020-03-27 14:44:34 +00:00
codecs ASoC: wm8962: set CLOCKING2 as non-volatile register 2020-04-24 11:31:04 +01:00
dwc ASoC: dwc: use asoc_rtd_to_cpu() / asoc_rtd_to_codec() macro for DAI pointer 2020-03-27 14:44:35 +00:00
fsl ASoC: fsl_esai: Disable exception interrupt before scheduling tasklet 2020-04-27 13:06:31 +01:00
generic ASoC: generic: use asoc_rtd_to_cpu() / asoc_rtd_to_codec() macro for DAI pointer 2020-03-27 14:44:36 +00:00
hisilicon
img ASoC: img: use asoc_rtd_to_cpu() / asoc_rtd_to_codec() macro for DAI pointer 2020-03-27 14:44:37 +00:00
intel ASoC: tegra: Fixes for v5.7-rc3 2020-04-22 08:51:44 +01:00
jz4740 ASoC: jz4740-i2s: Add support for the JZ4770 2020-03-24 17:16:01 +00:00
kirkwood ASoC: kirkwood: use asoc_rtd_to_cpu() / asoc_rtd_to_codec() macro for DAI pointer 2020-03-27 14:44:39 +00:00
mediatek ASoC: mediatek: use asoc_rtd_to_cpu() / asoc_rtd_to_codec() macro for DAI pointer 2020-03-27 14:44:40 +00:00
meson ASoC: meson: gx-card: fix codec-to-codec link setup 2020-04-20 13:58:22 +01:00
mxs ASoC: mxs: use asoc_rtd_to_cpu() / asoc_rtd_to_codec() macro for DAI pointer 2020-03-27 14:44:42 +00:00
pxa Merge series "ASoC: remove rtd->cpu/codec_dai{s}" from Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>: 2020-03-27 15:33:10 +00:00
qcom ASoC: q6dsp6: q6afe-dai: add missing channels to MI2S DAIs 2020-04-15 17:58:59 +01:00
rockchip ASoC: rockchip: use asoc_rtd_to_cpu() / asoc_rtd_to_codec() macro for DAI pointer 2020-03-27 14:44:45 +00:00
samsung ASoC: samsung: s3c24xx-i2s: Fix build after removal of DAI suspend/resume 2020-04-14 12:16:22 +01:00
sh ASoC: rsnd: Fix "status check failed" spam for multi-SSI 2020-04-20 14:16:18 +01:00
sirf
sof ASoC: SOF: Intel: add min/max channels for SSP on Baytrail/Broadwell 2020-04-17 19:37:15 +01:00
spear
sprd ASoC: sprd: use asoc_rtd_to_cpu() / asoc_rtd_to_codec() macro for DAI pointer 2020-03-27 14:44:48 +00:00
sti
stm ASoC: stm32: sai: fix sai probe 2020-04-17 19:37:14 +01:00
sunxi ASoC: sunxi: use asoc_rtd_to_cpu() / asoc_rtd_to_codec() macro for DAI pointer 2020-03-27 14:44:50 +00:00
tegra ASoC: tegra: Enable audio mclk during tegra_asoc_utils_init() 2020-04-21 16:53:15 +02:00
ti ASoC: davinci-mcasp: Fix dma_chan refcnt leak when getting dma type 2020-04-28 13:33:56 +01:00
txx9 ASoC: txx9: use asoc_rtd_to_cpu() / asoc_rtd_to_codec() macro for DAI pointer 2020-03-27 14:44:53 +00:00
uniphier ASoC: uniphier: use asoc_rtd_to_cpu() / asoc_rtd_to_codec() macro for DAI pointer 2020-03-27 14:44:53 +00:00
ux500 ASoC: ux500: use asoc_rtd_to_cpu() / asoc_rtd_to_codec() macro for DAI pointer 2020-03-27 14:44:54 +00:00
xilinx
xtensa ASoC: xtensa: use asoc_rtd_to_cpu() / asoc_rtd_to_codec() macro for DAI pointer 2020-03-27 14:44:55 +00:00
zte ASoC: zte: zx-tdm: remove redundant variables dev 2020-03-11 17:59:49 +00:00
Kconfig
Makefile
soc-ac97.c
soc-acpi.c
soc-component.c ASoC: soc-component: tidyup snd_soc_pcm_component_sync_stop() 2020-02-28 17:06:09 +00:00
soc-compress.c ASoC: Return error if the function does not support multi-cpu 2020-02-26 17:35:04 +00:00
soc-core.c ASoC: soc-core: Merge CPU/Codec for soc_dai_pcm_new() 2020-03-20 20:45:35 +00:00
soc-dai.c ASoC: soc-dai: revert all changes to DAI startup/shutdown sequence 2020-04-15 23:06:01 +01:00
soc-dapm.c ASoC: dapm: fixup dapm kcontrol widget 2020-04-20 14:35:06 +01:00
soc-devres.c
soc-generic-dmaengine-pcm.c ASoC: Return error if the function does not support multi-cpu 2020-02-26 17:35:04 +00:00
soc-io.c
soc-jack.c
soc-ops.c ASoC: fix regwmask 2020-03-30 18:22:36 +01:00
soc-pcm.c ASoC: soc-pcm: dpcm: Only allow playback/capture if supported 2020-04-15 13:00:28 +01:00
soc-topology.c ASoC: topology: Fix endianness issue 2020-04-15 17:59:00 +01:00
soc-utils.c