From ea4aae05974334e9837d86ff1cb716bad36b3ca8 Mon Sep 17 00:00:00 2001 From: Niklas Schnelle Date: Thu, 11 Mar 2021 14:23:12 +0100 Subject: [PATCH] PCI: Print a debug message on PCI device release Commit 62795041418d ("PCI: enhance physical slot debug information") added a debug print on releasing the PCI slot and another message on destroying it. There is however no debug print on releasing the PCI device structure itself and even with closely looking at the kernel log during hotplug testing, I overlooked several missing pci_dev_put() calls for way too long. Add a debug print in pci_release_dev() making it much easier to spot when the PCI device structure is not released when it is supposed to be. Link: https://lore.kernel.org/r/20210311132312.2882425-1-schnelle@linux.ibm.com Signed-off-by: Niklas Schnelle Signed-off-by: Bjorn Helgaas --- drivers/pci/probe.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index 3a62d09..7d9eddc 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -2226,6 +2226,7 @@ static void pci_release_dev(struct device *dev) pci_bus_put(pci_dev->bus); kfree(pci_dev->driver_override); bitmap_free(pci_dev->dma_alias_mask); + dev_dbg(dev, "device released\n"); kfree(pci_dev); } -- 2.7.4