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MIPS: Make __{,n,u}delay declarations match definitions and generic delay.h 

At some recent point arch/mips/include/asm/delay.h has started being
included into csrc-octeon.c where the __?delay() functions are defined.
This causes a compile failure due to conflicting declarations and
definitions of the functions.

It turns out that the generic definitions in arch/mips/lib/delay.c also
conflict.

Proposed fix: Declare the functions to take unsigned long parameters
just like asm-generic (and x86) does.  Update __delay to agree
(__ndelay and __udelay need no change).

Bonus: Get rid of 'inline' from __delay() definition, as it is globally
visible, and the compiler should be making this decision itself (it does
in fact inline the function without being told to).

Signed-off-by: David Daney <david.daney@cavium.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/4354/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
David Daney 2012-09-28 11:34:10 -07:00 committed by Ralf Baechle
parent ddffeb8c4d
commit 5210edcd52
2 changed files with 8 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
arch/mips/include/asm/delay.h
View File

@ -13,9 +13,9 @@
#include <linux/param.h>
extern void __delay(unsigned int loops);
extern void __ndelay(unsigned int ns);
extern void __udelay(unsigned int us);
extern void __delay(unsigned long loops);
extern void __ndelay(unsigned long ns);
extern void __udelay(unsigned long us);
#define ndelay(ns) __ndelay(ns)
#define udelay(us) __udelay(us)

6
arch/mips/lib/delay.c
View File

@ -15,13 +15,17 @@
#include <asm/compiler.h>
#include <asm/war.h>
inline void __delay(unsigned int loops)
void __delay(unsigned long loops)
{
__asm__ __volatile__ (
" .set noreorder \n"
" .align 3 \n"
"1: bnez %0, 1b \n"
#if __SIZEOF_LONG__ == 4
" subu %0, 1 \n"
#else
" dsubu %0, 1 \n"
#endif
" .set reorder \n"
: "=r" (loops)
: "0" (loops));