On 7/19/23 16:31, 杜敏杰 wrote:
> It is possible for dma_request_chan() to return EPROBE_DEFER, which means
> acdev->host->dev is not ready yet.
> At this point dev_err() will have no output.
>
> Signed-off-by: Minjie Du <duminjie@xxxxxxxx>
> ---
> drivers/ata/pata_arasan_cf.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/ata/pata_arasan_cf.c b/drivers/ata/pata_arasan_cf.c
> index 6ab294322..fd54682f1 100644
> --- a/drivers/ata/pata_arasan_cf.c
> +++ b/drivers/ata/pata_arasan_cf.c
> @@ -529,7 +529,8 @@ static void data_xfer(struct work_struct *work)
> /* dma_request_channel may sleep, so calling from process context */> acdev->dma_chan = dma_request_chan(acdev->host->dev, "data");
> if (IS_ERR(acdev->dma_chan)) {
> - dev_err(acdev->host->dev, "Unable to get dma_chan\n");
> + dev_err_probe(acdev->host->dev, PTR_ERR(acdev->dma_chan),
> + "Unable to get dma_chan\n");
Please align the string argument after "(".
> acdev->dma_chan = NULL;
> goto chan_request_fail;
> }
--
Damien Le Moal
Western Digital Research
