[PATCH -next resend 3/5] usb: musb: cppi41: Switch to use dev_err_probe() helper

[Yang Yingliang <yangyingliang@huawei.com>]

In the probe path, dev_err() can be replaced with dev_err_probe()
which will check if error code is -EPROBE_DEFER and prints the
error name. It also sets the defer probe reason which can be
checked later through debugfs. It's more simple in error path.

Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
---
 drivers/usb/musb/musb_cppi41.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/usb/musb/musb_cppi41.c b/drivers/usb/musb/musb_cppi41.c
index c963cb8565f2..9589243e8951 100644
--- a/drivers/usb/musb/musb_cppi41.c
+++ b/drivers/usb/musb/musb_cppi41.c
@@ -718,10 +718,8 @@ static int cppi41_dma_controller_start(struct cppi41_dma_controller *controller)
 
 		dc = dma_request_chan(dev->parent, str);
 		if (IS_ERR(dc)) {
-			ret = PTR_ERR(dc);
-			if (ret != -EPROBE_DEFER)
-				dev_err(dev, "Failed to request %s: %d.\n",
-					str, ret);
+			ret = dev_err_probe(dev, PTR_ERR(dc),
+					    "Failed to request %s.\n", str);
 			goto err;
 		}
 
-- 
2.25.1