| Message ID | 20230412063447.2841177-1-yoshihiro.shimoda.uh@renesas.com |
|---|---|
| State | New |
| Headers | show |
| Series | [v12] PCI: endpoint: functions/pci-epf-test: Fix dma_chan direction | expand |
On Wed, 12 Apr 2023 15:34:47 +0900, Yoshihiro Shimoda wrote: > In the 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 the pci_epf_test_data_transfer(), > if the dir is DMA_DEV_TO_MEM, it should use epf->dma_chan_rx, > but it used epf_test->dma_chan_tx. So, fix it. Otherwise, > results of pcitest with enabled DMA will be "NOT OKAY" on eDMA > environment. > > [...] Applied to controller/endpoint, thanks! [1/1] PCI: endpoint: functions/pci-epf-test: Fix dma_chan direction https://git.kernel.org/pci/pci/c/604de32d55a2 Thanks, Lorenzo
diff --git a/drivers/pci/endpoint/functions/pci-epf-test.c b/drivers/pci/endpoint/functions/pci-epf-test.c index 0f9d2ec822ac..172e5ac0bd96 100644 --- a/drivers/pci/endpoint/functions/pci-epf-test.c +++ b/drivers/pci/endpoint/functions/pci-epf-test.c @@ -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;
In the 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 the pci_epf_test_data_transfer(), if the dir is DMA_DEV_TO_MEM, it should use epf->dma_chan_rx, but it used epf_test->dma_chan_tx. So, fix it. Otherwise, results of pcitest with enabled DMA will be "NOT OKAY" on eDMA environment. Fixes: 8353813c88ef ("PCI: endpoint: Enable DMA tests for endpoints with DMA capabilities") Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Reviewed-by: Frank Li <Frank.Li@nxp.com> Tested-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com> --- Patch history: v1: https://lore.kernel.org/linux-pci/20230221100949.3530608-1-yoshihiro.shimoda.uh@renesas.com/ v1 resend: https://lore.kernel.org/linux-pci/20230221101706.3530869-1-yoshihiro.shimoda.uh@renesas.com/ v2: https://lore.kernel.org/linux-pci/20230222015327.3585691-1-yoshihiro.shimoda.uh@renesas.com/ v10 [1]: https://lore.kernel.org/linux-pci/20230308082352.491561-3-yoshihiro.shimoda.uh@renesas.com/ v11 [1]: https://lore.kernel.org/linux-pci/20230310123510.675685-3-yoshihiro.shimoda.uh@renesas.com/ v12: This patch. Changes from v11: - Add Tested-by (Thanks Hayashi-san!). [1] Include this patch into R-Car S4 support patch series. However, I need more time to fix the R-Car patches. So, I send this fix patch independently. drivers/pci/endpoint/functions/pci-epf-test.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)