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>

1 files changed, 5 insertions, 1 deletions

diff --git a/arch/mips/lib/delay.c b/arch/mips/lib/delay.c
index 5995969..dc81ca8 100644
--- a/arch/mips/lib/delay.c
+++ b/arch/mips/lib/delay.c
@@ -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));