Re: [PATCH v3 5/5] tty/serial: Add Spreadtrum sc9836-uart driver support

[Arnd Bergmann <arnd@arndb.de>]

On Wednesday 03 December 2014 17:17:13 Lyra Zhang wrote:

> 2014-11-27 2:29 GMT+08:00 Murali Karicheri <m-karicheri2@ti.com>:
> > How about sorting this includes? asm/irq.h go first followed linux/ in alphabatical order?
>
> There are a few compile warnings if I moved asm/irq.h to the top of
> all included files.

The order that Murali meant is

- first all linux/*.h headers, sorted alphabetically
- then all asm/*.h headers, again sorted alphabetically

This is the recommended style in general.

> Warning details are below:
> 
> In file included from drivers/tty/serial/sprd_serial.c:14:0:
> ./arch/arm64/include/asm/irq.h:6:39: warning: ‘struct pt_regs’
> declared inside parameter list [enabled by default]
>  extern void (*handle_arch_irq)(struct pt_regs *);
>                                        ^
> ./arch/arm64/include/asm/irq.h:6:39: warning: its scope is only this
> definition or declaration, which is probably not what you want
> [enabled by default]
> ./arch/arm64/include/asm/irq.h:8:54: warning: ‘struct pt_regs’
> declared inside parameter list [enabled by default]
>  extern void set_handle_irq(void (*handle_irq)(struct pt_regs *));
> 

I would consider this a (minor) bug in asm/irq.h. If you don't mind,
please submit a patch to add a line with 'struct pt_regs;' to
asm/irq.h.

	Arnd