diff options
| author | Peter Ujfalusi <peter.ujfalusi@ti.com> | 2019-12-17 14:31:14 +0300 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2019-12-19 10:19:42 +0300 |
| commit | e6d82a7bc849200101178ba7e7545a15999fab5a (patch) | |
| tree | cf9248cb6b1d0c6c12a90b7a09b895814f9cc6d9 /drivers/mmc | |
| parent | b67b45179b34b76a3c90bcc8b05b7141e74df909 (diff) | |
| download | linux-e6d82a7bc849200101178ba7e7545a15999fab5a.tar.xz | |
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: Peter Ujfalusi <peter.ujfalusi@ti.com>
Link: https://lore.kernel.org/r/20191217113114.32085-1-peter.ujfalusi@ti.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/host/usdhi6rol0.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/drivers/mmc/host/usdhi6rol0.c b/drivers/mmc/host/usdhi6rol0.c index 969a34e698f2..9a0b1e4e405d 100644 --- a/drivers/mmc/host/usdhi6rol0.c +++ b/drivers/mmc/host/usdhi6rol0.c @@ -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; |