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PCI: endpoint: functions/pci-epf-test: Fix dma_chan direction

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[ Upstream commit 880d51c729a3fa944794feb19f605eefe55916fc ]

In pci_epf_test_init_dma_chan() epf_test->dma_chan_rx is assigned from
dma_request_channel() with DMA_DEV_TO_MEM as filter.dma_mask.

However, in pci_epf_test_data_transfer() if the dir is DMA_DEV_TO_MEM,
epf->dma_chan_rx should be used but instead we are using
epf_test->dma_chan_tx.

Fix it.

Link: https://lore.kernel.org/r/20230412063447.2841177-1-yoshihiro.shimoda.uh@renesas.com
Fixes: 8353813c88 ("PCI: endpoint: Enable DMA tests for endpoints with DMA capabilities")
Tested-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Yoshihiro Shimoda 2023-04-12 15:34:47 +09:00 committed by Greg Kroah-Hartman
parent e14379d026
commit 222f64e56b
1 changed files with 1 additions and 1 deletions
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2
drivers/pci/endpoint/functions/pci-epf-test.c
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@ -112,7 +112,7 @@ static int pci_epf_test_data_transfer(struct pci_epf_test *epf_test,
size_t len, dma_addr_t dma_remote,
enum dma_transfer_direction dir)
{
struct dma_chan *chan = (dir == DMA_DEV_TO_MEM) ?
struct dma_chan *chan = (dir == DMA_MEM_TO_DEV) ?
epf_test->dma_chan_tx : epf_test->dma_chan_rx;
dma_addr_t dma_local = (dir == DMA_MEM_TO_DEV) ? dma_src : dma_dst;
enum dma_ctrl_flags flags = DMA_CTRL_ACK | DMA_PREP_INTERRUPT;