This is a note to let you know that I've just added the patch titled
PCI: epf-test: Fix DMA transfer completion initialization
to the 6.1-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
pci-epf-test-fix-dma-transfer-completion-initialization.patch
and it can be found in the queue-6.1 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 4aca56f8eae8aa44867ddd6aa107e06f7613226f Mon Sep 17 00:00:00 2001
From: Damien Le Moal <dlemoal@xxxxxxxxxx>
Date: Sat, 15 Apr 2023 11:35:28 +0900
Subject: PCI: epf-test: Fix DMA transfer completion initialization
From: Damien Le Moal <dlemoal@xxxxxxxxxx>
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@xxxxxxxxxx
Fixes: 8353813c88ef ("PCI: endpoint: Enable DMA tests for endpoints with DMA capabilities")
Signed-off-by: Damien Le Moal <dlemoal@xxxxxxxxxx>
Signed-off-by: Lorenzo Pieralisi <lpieralisi@xxxxxxxxxx>
Signed-off-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
Reviewed-by: Manivannan Sadhasivam <mani@xxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/pci/endpoint/functions/pci-epf-test.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/pci/endpoint/functions/pci-epf-test.c b/drivers/pci/endpoint/functions/pci-epf-test.c
index 0f9d2ec822ac..d65419735d2e 100644
--- a/drivers/pci/endpoint/functions/pci-epf-test.c
+++ b/drivers/pci/endpoint/functions/pci-epf-test.c
@@ -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) {
--
2.41.0
Patches currently in stable-queue which might be from dlemoal@xxxxxxxxxx are
queue-6.1/pci-epf-test-fix-dma-transfer-completion-detection.patch
queue-6.1/pci-rockchip-use-u32-variable-to-access-32-bit-registers.patch
queue-6.1/pci-rockchip-assert-pci-configuration-enable-bit-after-probe.patch
queue-6.1/pci-rockchip-fix-legacy-irq-generation-for-rk3399-pcie-endpoint-core.patch
queue-6.1/pci-epf-test-fix-dma-transfer-completion-initialization.patch
queue-6.1/pci-rockchip-add-poll-and-timeout-to-wait-for-phy-plls-to-be-locked.patch
queue-6.1/pci-rockchip-write-pci-device-id-to-correct-register.patch
queue-6.1/pci-rockchip-set-address-alignment-for-endpoint-mode.patch
