From e33ee8d5e6fcb54d0e04269e4303d30d54922303 Mon Sep 17 00:00:00 2001 From: Ethan Zhao Date: Tue, 5 Mar 2024 20:21:14 +0800 Subject: PCI: Make pci_dev_is_disconnected() helper public for other drivers [ Upstream commit 39714fd73c6b60a8d27bcc5b431afb0828bf4434 ] Make pci_dev_is_disconnected() public so that it can be called from Intel VT-d driver to quickly fix/workaround the surprise removal unplug hang issue for those ATS capable devices on PCIe switch downstream hotplug capable ports. Beside pci_device_is_present() function, this one has no config space space access, so is light enough to optimize the normal pure surprise removal and safe removal flow. Acked-by: Bjorn Helgaas Reviewed-by: Dan Carpenter Tested-by: Haorong Ye Signed-off-by: Ethan Zhao Link: https://lore.kernel.org/r/20240301080727.3529832-2-haifeng.zhao@linux.intel.com Signed-off-by: Lu Baolu Signed-off-by: Joerg Roedel Stable-dep-of: 4fc82cd907ac ("iommu/vt-d: Don't issue ATS Invalidation request when device is disconnected") Signed-off-by: Sasha Levin --- drivers/pci/pci.h | 5 ----- 1 file changed, 5 deletions(-) (limited to 'drivers/pci') diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h index 99abc4cec0df..1b4f94182972 100644 --- a/drivers/pci/pci.h +++ b/drivers/pci/pci.h @@ -363,11 +363,6 @@ static inline int pci_dev_set_disconnected(struct pci_dev *dev, void *unused) return 0; } -static inline bool pci_dev_is_disconnected(const struct pci_dev *dev) -{ - return dev->error_state == pci_channel_io_perm_failure; -} - /* pci_dev priv_flags */ #define PCI_DEV_ADDED 0 #define PCI_DPC_RECOVERED 1 -- cgit v1.2.3