Amelie Delaunay 4f1d74f747 ASoC: stm32: spdifrx: fix dma channel release in stm32_spdifrx_remove ... [ Upstream commit 9bb4af400c ] In case of error when requesting ctrl_chan DMA channel, ctrl_chan is not null. So the release of the dma channel leads to the following issue: [ 4.879000] st,stm32-spdifrx 500d0000.audio-controller: dma_request_slave_channel error -19 [ 4.888975] Unable to handle kernel NULL pointer dereference at virtual address 000000000000003d [...] [ 5.096577] Call trace: [ 5.099099] dma_release_channel+0x24/0x100 [ 5.103235] stm32_spdifrx_remove+0x24/0x60 [snd_soc_stm32_spdifrx] [ 5.109494] stm32_spdifrx_probe+0x320/0x4c4 [snd_soc_stm32_spdifrx] To avoid this issue, release channel only if the pointer is valid. Fixes: 794df9448e ("ASoC: stm32: spdifrx: manage rebind issue") Signed-off-by: Amelie Delaunay <amelie.delaunay@foss.st.com> Signed-off-by: Olivier Moysan <olivier.moysan@foss.st.com> Link: https://patch.msgid.link/20241105140242.527279-1-olivier.moysan@foss.st.com Signed-off-by: Mark Brown <broonie@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2024-11-14 13:15:13 +01:00
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Kconfig	ASoC: stm: depend on COMMON_CLK to fix compile tests	2020-11-23 20:39:48 +00:00
Makefile	ASoC: stm32: add DFSDM DAI support	2018-01-10 10:52:05 +00:00
stm32_adfsdm.c	ASoC: stm32: dfsdm: manage cb buffers cleanup	2022-11-09 17:56:37 +00:00
stm32_i2s.c	ASoC: stm32: i2s: remove irqf_oneshot flag	2022-11-10 17:50:52 +00:00
stm32_sai_sub.c	ASoC: stm32: Migrate to new style legacy DAI naming flag	2022-06-27 13:16:20 +01:00
stm32_sai.c	ASoC: stm: Use dev_err_probe() helper	2021-12-20 12:47:23 +00:00
stm32_sai.h	Linux 5.2-rc6	2019-06-26 12:39:34 +01:00
stm32_spdifrx.c	ASoC: stm32: spdifrx: fix dma channel release in stm32_spdifrx_remove	2024-11-14 13:15:13 +01:00