It is possible that dma_request_chan will return EPROBE_DEFER,
which means that host->dev is not ready yet. In this case,
dev_err(host->dev), there will be no output. This patch fixes the bug.
Signed-off-by: Wang Ming <machel@xxxxxxxx>
---
drivers/mmc/host/dw_mmc.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
index 829af2c98a44..5a3eefd86931 100644
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -841,9 +841,9 @@ static int dw_mci_edmac_init(struct dw_mci *host)
host->dms->ch = dma_request_chan(host->dev, "rx-tx");
if (IS_ERR(host->dms->ch)) {
- int ret = PTR_ERR(host->dms->ch);
+ int ret = dev_err_probe(host->dev, PTR_ERR(host->dms->ch),
+ "Failed to get external DMA channel.\n");
- dev_err(host->dev, "Failed to get external DMA channel.\n");
kfree(host->dms);
host->dms = NULL;
return ret;
--
2.25.1
