Commit e6d82a7b authored by Peter Ujfalusi's avatar Peter Ujfalusi Committed by Ulf Hansson
Browse files

mmc: usdhi6rol0: 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: default avatarPeter Ujfalusi <peter.ujfalusi@ti.com>
Link: https://lore.kernel.org/r/20191217113114.32085-1-peter.ujfalusi@ti.com


Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent b67b4517

drivers/mmc/host/usdhi6rol0.c

+8 −4
Original line number Diff line number Diff line
@@ -676,12 +676,14 @@ static void usdhi6_dma_request(struct usdhi6_host *host, phys_addr_t start) 
	};

	int ret;



	host->chan_tx = dma_request_slave_channel(mmc_dev(host->mmc), "tx");

	host->chan_tx = dma_request_chan(mmc_dev(host->mmc), "tx");

	dev_dbg(mmc_dev(host->mmc), "%s: TX: got channel %p\n", __func__,

		host->chan_tx);



	if (!host->chan_tx)

	if (IS_ERR(host->chan_tx)) {

		host->chan_tx = NULL;

		return;

	}



	cfg.direction = DMA_MEM_TO_DEV;

	cfg.dst_addr = start + USDHI6_SD_BUF0;
@@ -691,12 +693,14 @@ static void usdhi6_dma_request(struct usdhi6_host *host, phys_addr_t start) 
	if (ret < 0)

		goto e_release_tx;



	host->chan_rx = dma_request_slave_channel(mmc_dev(host->mmc), "rx");

	host->chan_rx = dma_request_chan(mmc_dev(host->mmc), "rx");

	dev_dbg(mmc_dev(host->mmc), "%s: RX: got channel %p\n", __func__,

		host->chan_rx);



	if (!host->chan_rx)

	if (IS_ERR(host->chan_rx)) {

		host->chan_rx = NULL;

		goto e_release_tx;

	}



	cfg.direction = DMA_DEV_TO_MEM;

	cfg.src_addr = cfg.dst_addr;

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