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PCI: epf-test: Fix DMA transfer completion initialization

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commit 4aca56f8eae8aa44867ddd6aa107e06f7613226f upstream.

Reinitialize the transfer_complete DMA transfer completion before calling
tx_submit(), to avoid seeing the DMA transfer complete before the
completion is initialized, thus potentially losing the completion
notification.

Link: https://lore.kernel.org/r/20230415023542.77601-4-dlemoal@kernel.org
Fixes: 8353813c88 ("PCI: endpoint: Enable DMA tests for endpoints with DMA capabilities")
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Manivannan Sadhasivam <mani@kernel.org>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Damien Le Moal 2023-04-15 11:35:28 +09:00 committed by Greg Kroah-Hartman
parent cf0d7b7270
commit bcd276f143
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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@ -151,10 +151,10 @@ static int pci_epf_test_data_transfer(struct pci_epf_test *epf_test,
return -EIO;
}
reinit_completion(&epf_test->transfer_complete);
tx->callback = pci_epf_test_dma_callback;
tx->callback_param = epf_test;
cookie = tx->tx_submit(tx);
reinit_completion(&epf_test->transfer_complete);
ret = dma_submit_error(cookie);
if (ret) {