The patch below does not apply to the 5.4-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.

To reproduce the conflict and resubmit, you may use the following commands:

git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.4.y git checkout FETCH_HEAD git cherry-pick -x 919d14603dab6a9cf03ebbeb2cfa556df48737c8 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to 'stable@vger.kernel.org' --in-reply-to '2025041759-uncover-siesta-9298@gregkh' --subject-prefix 'PATCH 5.4.y' HEAD^..

Possible dependencies:

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From 919d14603dab6a9cf03ebbeb2cfa556df48737c8 Mon Sep 17 00:00:00 2001 From: Kunihiko Hayashi hayashi.kunihiko@socionext.com Date: Tue, 25 Feb 2025 20:02:49 +0900 Subject: [PATCH] misc: pci_endpoint_test: Fix displaying 'irq_type' after 'request_irq' error MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit

There are two variables that indicate the interrupt type to be used in the next test execution, global "irq_type" and "test->irq_type".

The former is referenced from pci_endpoint_test_get_irq() to preserve the current type for ioctl(PCITEST_GET_IRQTYPE).

In the pci_endpoint_test_request_irq(), since this global variable is referenced when an error occurs, the unintended error message is displayed.

For example, after running "pcitest -i 2", the following message shows "MSI 3" even if the current IRQ type becomes "MSI-X":

pci-endpoint-test 0000:01:00.0: Failed to request IRQ 30 for MSI 3 SET IRQ TYPE TO MSI-X: NOT OKAY

Fix this issue by using "test->irq_type" instead of global "irq_type".

Cc: stable@vger.kernel.org Fixes: b2ba9225e031 ("misc: pci_endpoint_test: Avoid using module parameter to determine irqtype") Reviewed-by: Manivannan Sadhasivam manivannan.sadhasivam@linaro.org Signed-off-by: Kunihiko Hayashi hayashi.kunihiko@socionext.com Link: https://lore.kernel.org/r/20250225110252.28866-4-hayashi.kunihiko@socionext.... [kwilczynski: commit log] Signed-off-by: Krzysztof Wilczyński kwilczynski@kernel.org

diff --git a/drivers/misc/pci_endpoint_test.c b/drivers/misc/pci_endpoint_test.c index 9e56d200d2f0..acf3d8dab131 100644 --- a/drivers/misc/pci_endpoint_test.c +++ b/drivers/misc/pci_endpoint_test.c @@ -242,7 +242,7 @@ static int pci_endpoint_test_request_irq(struct pci_endpoint_test *test) return 0;

fail: - switch (irq_type) { + switch (test->irq_type) { case IRQ_TYPE_INTX: dev_err(dev, "Failed to request IRQ %d for Legacy\n", pci_irq_vector(pdev, i));