[PATCH v2] PCI: cpcihp: Move declaration of cpci_debug to the header file

From: "Krzysztof Wilczyński" <kw@linux.com>
To: Bjorn Helgaas <bhelgaas@google.com>
Cc: Scott Murray <scott@spiteful.org>, linux-pci@vger.kernel.org
Subject: [PATCH v2] PCI: cpcihp: Move declaration of cpci_debug to the header file
Date: Thu,  1 Jul 2021 18:43:06 +0000	[thread overview]
Message-ID: <20210701184306.1492003-1-kw@linux.com> (raw)

At the moment, the global variable cpci_debug is declared in the
cpci_hotplug_core.c file.  Since this variable has users outside of this
file and uses the extern keyword to change its visibility, move the
variable declaration to the header file.

This resolves the following sparse warning:

  drivers/pci/hotplug/cpci_hotplug_core.c:47:5: warning: symbol 'cpci_debug' was not declared. Should it be static?

Signed-off-by: Krzysztof Wilczyński <kw@linux.com>
---
Changes in v2:
  Remove hunk that incorrectly removed definition of the cpci_debug
  variable.

 drivers/pci/hotplug/cpci_hotplug.h     | 3 +++
 drivers/pci/hotplug/cpci_hotplug_pci.c | 2 --
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/pci/hotplug/cpci_hotplug.h b/drivers/pci/hotplug/cpci_hotplug.h
index f33ff2bca414..3fdd1b9bd8c3 100644
--- a/drivers/pci/hotplug/cpci_hotplug.h
+++ b/drivers/pci/hotplug/cpci_hotplug.h
@@ -75,6 +75,9 @@ int cpci_hp_unregister_bus(struct pci_bus *bus);
 int cpci_hp_start(void);
 int cpci_hp_stop(void);
 
+/* Global variables */
+extern int cpci_debug;
+
 /*
  * Internal function prototypes, these functions should not be used by
  * board/chassis drivers.
diff --git a/drivers/pci/hotplug/cpci_hotplug_pci.c b/drivers/pci/hotplug/cpci_hotplug_pci.c
index 2c16adb7f4ec..6c48066acb44 100644
--- a/drivers/pci/hotplug/cpci_hotplug_pci.c
+++ b/drivers/pci/hotplug/cpci_hotplug_pci.c
@@ -19,8 +19,6 @@
 
 #define MY_NAME	"cpci_hotplug"
 
-extern int cpci_debug;
-
 #define dbg(format, arg...)					\
 	do {							\
 		if (cpci_debug)					\
-- 
2.32.0

