6 files changed, 3 insertions, 12 deletions

diff --git a/arch/um/Kconfig.debug b/arch/um/Kconfig.debug
index 5681a8bd370b..bab51d619173 100644
--- a/arch/um/Kconfig.debug
+++ b/arch/um/Kconfig.debug
@@ -49,7 +49,6 @@ config GCOV
 
 config SYSCALL_DEBUG
         bool "Enable system call debugging"
-        default N
         depends on DEBUG_INFO
         help
         This adds some system debugging to UML, including keeping a ring buffer
diff --git a/arch/um/drivers/mconsole_kern.c b/arch/um/drivers/mconsole_kern.c
index 6d7173fc55a3..79149314ed04 100644
--- a/arch/um/drivers/mconsole_kern.c
+++ b/arch/um/drivers/mconsole_kern.c
@@ -300,8 +300,6 @@ void mconsole_reboot(struct mc_request *req)
         machine_restart(NULL);
 }
 
-extern void ctrl_alt_del(void);
-
 void mconsole_cad(struct mc_request *req)
 {
         mconsole_reply(req, "", 0, 0);
diff --git a/arch/um/include/sysdep-x86_64/syscalls.h b/arch/um/include/sysdep-x86_64/syscalls.h
index e06f83e80f4a..5e86aa047b2b 100644
--- a/arch/um/include/sysdep-x86_64/syscalls.h
+++ b/arch/um/include/sysdep-x86_64/syscalls.h
@@ -12,8 +12,6 @@
 
 typedef long syscall_handler_t(void);
 
-extern syscall_handler_t *ia32_sys_call_table[];
-
 extern syscall_handler_t *sys_call_table[];
 
 #define EXECUTE_SYSCALL(syscall, regs) \
diff --git a/arch/um/kernel/physmem.c b/arch/um/kernel/physmem.c
index fc0f0b085ca7..166cb09cae4c 100644
--- a/arch/um/kernel/physmem.c
+++ b/arch/um/kernel/physmem.c
@@ -69,7 +69,7 @@ static void insert_phys_mapping(struct phys_desc *desc)
                 panic("Physical remapping for %p already present",
                       desc->virt);
 
-        rb_link_node(&desc->rb, (*n)->rb_parent, n);
+        rb_link_node(&desc->rb, rb_parent(*n), n);
         rb_insert_color(&desc->rb, &phys_mappings);
 }
 
diff --git a/arch/um/kernel/time_kern.c b/arch/um/kernel/time_kern.c
index 86f51d04c98d..87cdbc560d36 100644
--- a/arch/um/kernel/time_kern.c
+++ b/arch/um/kernel/time_kern.c
@@ -87,7 +87,7 @@ void timer_irq(union uml_pt_regs *regs)
 
 void time_init_kern(void)
 {
-        unsigned long long nsecs;
+        long long nsecs;
 
         nsecs = os_nsecs();
         set_normalized_timespec(&wall_to_monotonic, -nsecs / BILLION,
diff --git a/arch/um/sys-ppc/misc.S b/arch/um/sys-ppc/misc.S
index 11b7bd768cfd..f0c971db47e4 100644
--- a/arch/um/sys-ppc/misc.S
+++ b/arch/um/sys-ppc/misc.S
@@ -23,14 +23,10 @@
 #define CACHE_LINE_SIZE         16
 #define LG_CACHE_LINE_SIZE      4
 #define MAX_COPY_PREFETCH       1
-#elif !defined(CONFIG_PPC64BRIDGE)
+#else
 #define CACHE_LINE_SIZE         32
 #define LG_CACHE_LINE_SIZE      5
 #define MAX_COPY_PREFETCH       4
-#else
-#define CACHE_LINE_SIZE         128
-#define LG_CACHE_LINE_SIZE      7
-#define MAX_COPY_PREFETCH       1
 #endif /* CONFIG_4xx || CONFIG_8xx */
 
         .text