From: Peter Ujfalusi Date: Tue, 17 Dec 2019 11:30:31 +0000 (+0200) Subject: mmc: sh_mmcif: Use dma_request_chan() instead dma_request_slave_channel() X-Git-Tag: v5.6-rc1~200^2~40 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=b67b45179b34b76a3c90bcc8b05b7141e74df909;p=thirdparty%2Flinux.git mmc: sh_mmcif: Use dma_request_chan() instead dma_request_slave_channel() dma_request_slave_channel() is a wrapper on top of dma_request_chan() eating up the error code. By using dma_request_chan() directly the driver can support deferred probing against DMA if needed. Signed-off-by: Peter Ujfalusi Link: https://lore.kernel.org/r/20191217113031.31847-1-peter.ujfalusi@ti.com Signed-off-by: Ulf Hansson --- diff --git a/drivers/mmc/host/sh_mmcif.c b/drivers/mmc/host/sh_mmcif.c index 5069f1cbcef8e..7e1fd557109c0 100644 --- a/drivers/mmc/host/sh_mmcif.c +++ b/drivers/mmc/host/sh_mmcif.c @@ -432,8 +432,12 @@ static void sh_mmcif_request_dma(struct sh_mmcif_host *host) host->chan_rx = sh_mmcif_request_dma_pdata(host, pdata->slave_id_rx); } else { - host->chan_tx = dma_request_slave_channel(dev, "tx"); - host->chan_rx = dma_request_slave_channel(dev, "rx"); + host->chan_tx = dma_request_chan(dev, "tx"); + if (IS_ERR(host->chan_tx)) + host->chan_tx = NULL; + host->chan_rx = dma_request_chan(dev, "rx"); + if (IS_ERR(host->chan_rx)) + host->chan_rx = NULL; } dev_dbg(dev, "%s: got channel TX %p RX %p\n", __func__, host->chan_tx, host->chan_rx);