Revert "ARCv2: spinlock/rwlock: Reset retry delay when starting a new spin-wait cycle"

This reverts commit b89aa12c177477e34caa722818536fb5d0bffd76.

The issue was fixed in hardware in HS2.1C release and there are no known
external users of affected RTL so revert the whole delayed retry series !

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>

diff --git a/arch/arc/include/asm/spinlock.h b/arch/arc/include/asm/spinlock.h
index a86cb84..5e01bdf 100644 (file)
--- a/arch/arc/include/asm/spinlock.h
+++ b/arch/arc/include/asm/spinlock.h
@@ -279,7 +279,7 @@ static inline void arch_spin_lock(arch_spinlock_t *lock)
        __asm__ __volatile__(
        "0:     mov     %[delay], 1             \n"
        "1:     llock   %[val], [%[slock]]      \n"
-       "       breq    %[val], %[LOCKED], 0b   \n"     /* spin while LOCKED */
+       "       breq    %[val], %[LOCKED], 1b   \n"     /* spin while LOCKED */
        "       scond   %[LOCKED], [%[slock]]   \n"     /* acquire */
        "       bz      4f                      \n"     /* done */
        "                                       \n"
@@ -358,7 +358,7 @@ static inline void arch_read_lock(arch_rwlock_t *rw)
        __asm__ __volatile__(
        "0:     mov     %[delay], 1             \n"
        "1:     llock   %[val], [%[rwlock]]     \n"
-       "       brls    %[val], %[WR_LOCKED], 0b\n"     /* <= 0: spin while write locked */
+       "       brls    %[val], %[WR_LOCKED], 1b\n"     /* <= 0: spin while write locked */
        "       sub     %[val], %[val], 1       \n"     /* reader lock */
        "       scond   %[val], [%[rwlock]]     \n"
        "       bz      4f                      \n"     /* done */
@@ -427,7 +427,7 @@ static inline void arch_write_lock(arch_rwlock_t *rw)
        __asm__ __volatile__(
        "0:     mov     %[delay], 1             \n"
        "1:     llock   %[val], [%[rwlock]]     \n"
-       "       brne    %[val], %[UNLOCKED], 0b \n"     /* while !UNLOCKED spin */
+       "       brne    %[val], %[UNLOCKED], 1b \n"     /* while !UNLOCKED spin */
        "       mov     %[val], %[WR_LOCKED]    \n"
        "       scond   %[val], [%[rwlock]]     \n"
        "       bz      4f                      \n"