ata: pata_arasan_cf: Use dev_err_probe() instead dev_err() in data_xfer()

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. Use dev_err_probe() instead.

Signed-off-by: Minjie Du <duminjie@vivo.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>

diff --git a/drivers/ata/pata_arasan_cf.c b/drivers/ata/pata_arasan_cf.c
index 6ab2943..314eaa1 100644 (file)
--- 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");
                acdev->dma_chan = NULL;
                goto chan_request_fail;
        }