From f25723dcef4a38f6a39e17afeabd1adf6402230e Mon Sep 17 00:00:00 2001 From: Vincent Whitchurch Date: Tue, 27 Sep 2022 13:21:14 +0200 Subject: spi: Save current RX and TX DMA devices Save the current RX and TX DMA devices to avoid having to duplicate the logic to pick them, since we'll need access to them in some more functions to fix a bug in the cache handling. Signed-off-by: Vincent Whitchurch Link: https://lore.kernel.org/r/20220927112117.77599-2-vincent.whitchurch@axis.com Signed-off-by: Mark Brown --- drivers/spi/spi.c | 19 ++++--------------- 1 file changed, 4 insertions(+), 15 deletions(-) (limited to 'drivers/spi/spi.c') diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index c582ae4deab3..a492a2a16fed 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -1147,6 +1147,8 @@ static int __spi_map_msg(struct spi_controller *ctlr, struct spi_message *msg) } } + ctlr->cur_rx_dma_dev = rx_dev; + ctlr->cur_tx_dma_dev = tx_dev; ctlr->cur_msg_mapped = true; return 0; @@ -1154,26 +1156,13 @@ static int __spi_map_msg(struct spi_controller *ctlr, struct spi_message *msg) static int __spi_unmap_msg(struct spi_controller *ctlr, struct spi_message *msg) { + struct device *rx_dev = ctlr->cur_rx_dma_dev; + struct device *tx_dev = ctlr->cur_tx_dma_dev; struct spi_transfer *xfer; - struct device *tx_dev, *rx_dev; if (!ctlr->cur_msg_mapped || !ctlr->can_dma) return 0; - if (ctlr->dma_tx) - tx_dev = ctlr->dma_tx->device->dev; - else if (ctlr->dma_map_dev) - tx_dev = ctlr->dma_map_dev; - else - tx_dev = ctlr->dev.parent; - - if (ctlr->dma_rx) - rx_dev = ctlr->dma_rx->device->dev; - else if (ctlr->dma_map_dev) - rx_dev = ctlr->dma_map_dev; - else - rx_dev = ctlr->dev.parent; - list_for_each_entry(xfer, &msg->transfers, transfer_list) { if (!ctlr->can_dma(ctlr, msg->spi, xfer)) continue; -- cgit v1.2.3