| Message ID | 20220301081104.GB17375@kili (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | ASoC: qcom: Fix error code in lpass_platform_copy() | expand |
On Tue, 1 Mar 2022 11:11:04 +0300, Dan Carpenter wrote: > The copy_to/from_user() functions return the number of bytes remaining > to be copied. This function needs to return negative error codes > because snd_soc_pcm_component_copy_user() treats positive returns as > success in soc_component_ret(). > > Applied to https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next Thanks! [1/1] ASoC: qcom: Fix error code in lpass_platform_copy() commit: d5dd781bcc81aa31b62310927f25cfa2574450f1 All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted. You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed. If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced. Please add any relevant lists and maintainers to the CCs when replying to this mail. Thanks, Mark
diff --git a/sound/soc/qcom/lpass-platform.c b/sound/soc/qcom/lpass-platform.c index bf180a594c19..620312529c2f 100644 --- a/sound/soc/qcom/lpass-platform.c +++ b/sound/soc/qcom/lpass-platform.c @@ -1228,15 +1228,19 @@ static int lpass_platform_copy(struct snd_soc_component *component, channel * (rt->dma_bytes / rt->channels)); if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { - if (is_cdc_dma_port(dai_id)) + if (is_cdc_dma_port(dai_id)) { ret = copy_from_user_toio(dma_buf, buf, bytes); - else - ret = copy_from_user((void __force *)dma_buf, buf, bytes); + } else { + if (copy_from_user((void __force *)dma_buf, buf, bytes)) + ret = -EFAULT; + } } else if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) { - if (is_cdc_dma_port(dai_id)) + if (is_cdc_dma_port(dai_id)) { ret = copy_to_user_fromio(buf, dma_buf, bytes); - else - ret = copy_to_user(buf, (void __force *)dma_buf, bytes); + } else { + if (copy_to_user(buf, (void __force *)dma_buf, bytes)) + ret = -EFAULT; + } } return ret;
The copy_to/from_user() functions return the number of bytes remaining to be copied. This function needs to return negative error codes because snd_soc_pcm_component_copy_user() treats positive returns as success in soc_component_ret(). Fixes: 7d7209557b67 ("ASoC: qcom: Add support for codec dma driver") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> --- sound/soc/qcom/lpass-platform.c | 16 ++++++++++------ 1 file changed, 10 insertions(+), 6 deletions(-)