diff mbox series

[RFC,17/38] x86/pci: Reducde #ifdeffery in PCI init code

Message ID 20200821002946.982695529@linutronix.de (mailing list archive)
State Superseded
Headers show
Series x86, PCI, XEN, genirq ...: Prepare for device MSI | expand

Commit Message

Thomas Gleixner Aug. 21, 2020, 12:24 a.m. UTC
Adding a function call before the first #ifdef in arch_pci_init() triggers
a 'mixed declarations and code' warning if PCI_DIRECT is enabled.

Use stub functions and move the #ifdeffery to the header file where it is
not in the way.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-pci@vger.kernel.org
---
 arch/x86/include/asm/pci_x86.h |   11 +++++++++++
 arch/x86/pci/init.c            |   10 +++-------
 2 files changed, 14 insertions(+), 7 deletions(-)

Comments

Bjorn Helgaas Aug. 25, 2020, 8:20 p.m. UTC | #1
s/Reducde/Reduce/ (in subject)

On Fri, Aug 21, 2020 at 02:24:41AM +0200, Thomas Gleixner wrote:
> Adding a function call before the first #ifdef in arch_pci_init() triggers
> a 'mixed declarations and code' warning if PCI_DIRECT is enabled.
> 
> Use stub functions and move the #ifdeffery to the header file where it is
> not in the way.
> 
> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
> Cc: linux-pci@vger.kernel.org

Nice cleanup, thanks.  Glad to get rid of the useless initializer,
too.

Acked-by: Bjorn Helgaas <bhelgaas@google.com>

> ---
>  arch/x86/include/asm/pci_x86.h |   11 +++++++++++
>  arch/x86/pci/init.c            |   10 +++-------
>  2 files changed, 14 insertions(+), 7 deletions(-)
> 
> --- a/arch/x86/include/asm/pci_x86.h
> +++ b/arch/x86/include/asm/pci_x86.h
> @@ -114,9 +114,20 @@ extern const struct pci_raw_ops pci_dire
>  extern bool port_cf9_safe;
>  
>  /* arch_initcall level */
> +#ifdef CONFIG_PCI_DIRECT
>  extern int pci_direct_probe(void);
>  extern void pci_direct_init(int type);
> +#else
> +static inline int pci_direct_probe(void) { return -1; }
> +static inline  void pci_direct_init(int type) { }
> +#endif
> +
> +#ifdef CONFIG_PCI_BIOS
>  extern void pci_pcbios_init(void);
> +#else
> +static inline void pci_pcbios_init(void) { }
> +#endif
> +
>  extern void __init dmi_check_pciprobe(void);
>  extern void __init dmi_check_skip_isa_align(void);
>  
> --- a/arch/x86/pci/init.c
> +++ b/arch/x86/pci/init.c
> @@ -8,11 +8,9 @@
>     in the right sequence from here. */
>  static __init int pci_arch_init(void)
>  {
> -#ifdef CONFIG_PCI_DIRECT
> -	int type = 0;
> +	int type;
>  
>  	type = pci_direct_probe();
> -#endif
>  
>  	if (!(pci_probe & PCI_PROBE_NOEARLY))
>  		pci_mmcfg_early_init();
> @@ -20,18 +18,16 @@ static __init int pci_arch_init(void)
>  	if (x86_init.pci.arch_init && !x86_init.pci.arch_init())
>  		return 0;
>  
> -#ifdef CONFIG_PCI_BIOS
>  	pci_pcbios_init();
> -#endif
> +
>  	/*
>  	 * don't check for raw_pci_ops here because we want pcbios as last
>  	 * fallback, yet it's needed to run first to set pcibios_last_bus
>  	 * in case legacy PCI probing is used. otherwise detecting peer busses
>  	 * fails.
>  	 */
> -#ifdef CONFIG_PCI_DIRECT
>  	pci_direct_init(type);
> -#endif
> +
>  	if (!raw_pci_ops && !raw_pci_ext_ops)
>  		printk(KERN_ERR
>  		"PCI: Fatal: No config space access function found\n");
>
diff mbox series

Patch

--- a/arch/x86/include/asm/pci_x86.h
+++ b/arch/x86/include/asm/pci_x86.h
@@ -114,9 +114,20 @@  extern const struct pci_raw_ops pci_dire
 extern bool port_cf9_safe;
 
 /* arch_initcall level */
+#ifdef CONFIG_PCI_DIRECT
 extern int pci_direct_probe(void);
 extern void pci_direct_init(int type);
+#else
+static inline int pci_direct_probe(void) { return -1; }
+static inline  void pci_direct_init(int type) { }
+#endif
+
+#ifdef CONFIG_PCI_BIOS
 extern void pci_pcbios_init(void);
+#else
+static inline void pci_pcbios_init(void) { }
+#endif
+
 extern void __init dmi_check_pciprobe(void);
 extern void __init dmi_check_skip_isa_align(void);
 
--- a/arch/x86/pci/init.c
+++ b/arch/x86/pci/init.c
@@ -8,11 +8,9 @@ 
    in the right sequence from here. */
 static __init int pci_arch_init(void)
 {
-#ifdef CONFIG_PCI_DIRECT
-	int type = 0;
+	int type;
 
 	type = pci_direct_probe();
-#endif
 
 	if (!(pci_probe & PCI_PROBE_NOEARLY))
 		pci_mmcfg_early_init();
@@ -20,18 +18,16 @@  static __init int pci_arch_init(void)
 	if (x86_init.pci.arch_init && !x86_init.pci.arch_init())
 		return 0;
 
-#ifdef CONFIG_PCI_BIOS
 	pci_pcbios_init();
-#endif
+
 	/*
 	 * don't check for raw_pci_ops here because we want pcbios as last
 	 * fallback, yet it's needed to run first to set pcibios_last_bus
 	 * in case legacy PCI probing is used. otherwise detecting peer busses
 	 * fails.
 	 */
-#ifdef CONFIG_PCI_DIRECT
 	pci_direct_init(type);
-#endif
+
 	if (!raw_pci_ops && !raw_pci_ext_ops)
 		printk(KERN_ERR
 		"PCI: Fatal: No config space access function found\n");