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| author | Yang Yingliang <yangyingliang@huawei.com> | 2021-06-15 03:39:22 +0200 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2021-06-21 14:03:18 +0200 |
| commit | a2f6ed4a44721d3a9fdf4da7e0743cb13866bf61 (patch) | |
| tree | 4ae1a3c0d42d58d827de42adaccbf1ba4266c6e7 | |
| parent | ASoC: fsl_ssi: Use devm_platform_get_and_ioremap_resource() (diff) | |
| download | linux-a2f6ed4a44721d3a9fdf4da7e0743cb13866bf61.tar.xz linux-a2f6ed4a44721d3a9fdf4da7e0743cb13866bf61.zip | |
ASoC: fsl_xcvr: check return value after calling platform_get_resource_byname()
It will cause null-ptr-deref if platform_get_resource_byname() returns NULL,
we need check the return value.
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20210615013922.784296-10-yangyingliang@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
| -rw-r--r-- | sound/soc/fsl/fsl_xcvr.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/sound/soc/fsl/fsl_xcvr.c b/sound/soc/fsl/fsl_xcvr.c index df7c189d97dd..1330e190e1ff 100644 --- a/sound/soc/fsl/fsl_xcvr.c +++ b/sound/soc/fsl/fsl_xcvr.c @@ -1202,6 +1202,10 @@ static int fsl_xcvr_probe(struct platform_device *pdev) rx_res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "rxfifo"); tx_res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "txfifo"); + if (!rx_res || !tx_res) { + dev_err(dev, "could not find rxfifo or txfifo resource\n"); + return -EINVAL; + } xcvr->dma_prms_rx.chan_name = "rx"; xcvr->dma_prms_tx.chan_name = "tx"; xcvr->dma_prms_rx.addr = rx_res->start; |