Unverified Commit a2f6ed4a authored by Yang Yingliang's avatar Yang Yingliang Committed by Mark Brown
Browse files

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: default avatarYang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20210615013922.784296-10-yangyingliang@huawei.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 67798860

sound/soc/fsl/fsl_xcvr.c

+4 −0
Original line number Diff line number Diff line
@@ -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;