Otherwise, the following build error will happen for CONFIG_DEBUG_FS=n &&
CONFIG_PCIE_PTM=y.
drivers/pci/pcie/ptm.c:498:25: error: redefinition of 'pcie_ptm_create_debugfs'
498 | struct pci_ptm_debugfs *pcie_ptm_create_debugfs(struct device *dev, void *pdata,
| ^
./include/linux/pci.h:1915:2: note: previous definition is here
1915 | *pcie_ptm_create_debugfs(struct device *dev, void *pdata,
| ^
drivers/pci/pcie/ptm.c:546:6: error: redefinition of 'pcie_ptm_destroy_debugfs'
546 | void pcie_ptm_destroy_debugfs(struct pci_ptm_debugfs *ptm_debugfs)
| ^
./include/linux/pci.h:1918:1: note: previous definition is here
1918 | pcie_ptm_destroy_debugfs(struct pci_ptm_debugfs *ptm_debugfs) { }
|
Fixes: 132833405e61 ("PCI: Add debugfs support for exposing PTM context")
Reported-by: Eric Biggers <ebiggers@xxxxxxxxxx>
Closes: https://lore.kernel.org/linux-pci/20250607025506.GA16607@sol
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx>
---
drivers/pci/pcie/ptm.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/pci/pcie/ptm.c b/drivers/pci/pcie/ptm.c
index ee5f615a9023..4bd73f038ffb 100644
--- a/drivers/pci/pcie/ptm.c
+++ b/drivers/pci/pcie/ptm.c
@@ -254,6 +254,7 @@ bool pcie_ptm_enabled(struct pci_dev *dev)
}
EXPORT_SYMBOL(pcie_ptm_enabled);
+#if IS_ENABLED(CONFIG_DEBUG_FS)
static ssize_t context_update_write(struct file *file, const char __user *ubuf,
size_t count, loff_t *ppos)
{
@@ -552,3 +553,4 @@ void pcie_ptm_destroy_debugfs(struct pci_ptm_debugfs *ptm_debugfs)
debugfs_remove_recursive(ptm_debugfs->debugfs);
}
EXPORT_SYMBOL_GPL(pcie_ptm_destroy_debugfs);
+#endif
--
2.43.0
