MIPS: __delay ABI-dependent subtraction simplification

This small update to the previous fix to __delay removes a conditional
around the ABI-dependent subtraction operation within an inline asm in
favor to the standard <asm/asm.h> LONG_SUBU macro.  No change in code
produced.

Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/6703/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 3 insertions, 5 deletions

diff --git a/arch/mips/lib/delay.c b/arch/mips/lib/delay.c
index 705cfb7c1a74..21d27c6819a2 100644
--- a/arch/mips/lib/delay.c
+++ b/arch/mips/lib/delay.c
@@ -11,7 +11,9 @@
 #include <linux/module.h>
 #include <linux/param.h>
 #include <linux/smp.h>
+#include <linux/stringify.h>
 
+#include <asm/asm.h>
 #include <asm/compiler.h>
 #include <asm/war.h>
 
@@ -27,11 +29,7 @@ void __delay(unsigned long loops)
         "       .set    noreorder                               \n"
         "       .align  3                                       \n"
         "1:     bnez    %0, 1b                                  \n"
-#if BITS_PER_LONG == 32
-        "       subu    %0, %1                                  \n"
-#else
-        "       dsubu   %0, %1                                  \n"
-#endif
+        "        " __stringify(LONG_SUBU) "     %0, %1          \n"
         "       .set    reorder                                 \n"
         : "=r" (loops)
         : GCC_DADDI_IMM_ASM() (1), "0" (loops));