linux-user, ppc: fix clock_nanosleep() for linux-user-ppc

Our safe_clock_nanosleep() returns -1 and updates errno.

We don't need to update the CRF bit in syscall.c because it will
be updated in ppc/cpu_loop.c as the return value is negative.

Signed-off-by: Laurent Vivier <[email protected]>
Signed-off-by: Alex Bennée <[email protected]>
Reviewed-by: Richard Henderson <[email protected]>
Message-Id: <[email protected]>
Message-Id: <[email protected]>

Author: vivier

linux-user/syscall.c

@@ -11840,13 +11840,6 @@ static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1,
             host_to_target_timespec(arg4, &ts);
         }
 
-#if defined(TARGET_PPC)
-        /* clock_nanosleep is odd in that it returns positive errno values.
-         * On PPC, CR0 bit 3 should be set in such a situation. */
-        if (ret && ret != -TARGET_ERESTARTSYS) {
-            ((CPUPPCState *)cpu_env)->crf[0] |= 1;
-        }
-#endif
         return ret;
     }
 #endif