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usb: musb: cppi41: Switch to use dev_err_probe() helper

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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>
Link: https://lore.kernel.org/r/20220927072616.913672-4-yangyingliang@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Yang Yingliang 2022-09-27 15:26:14 +08:00 committed by Greg Kroah-Hartman
parent 92150ca664
commit a806f67f15
1 changed files with 2 additions and 4 deletions
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6
drivers/usb/musb/musb_cppi41.c
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@ -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;
}