MIPS: kernel: Remove not needed set_fs calls

flush_icache_range always does flush kernel address ranges, so no
need to do the set_fs dance.

Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>

diff --git a/arch/mips/kernel/ftrace.c b/arch/mips/kernel/ftrace.c
index 666b996..8c401e4 100644 (file)
--- a/arch/mips/kernel/ftrace.c
+++ b/arch/mips/kernel/ftrace.c
@@ -90,7 +90,6 @@ static int ftrace_modify_code_2(unsigned long ip, unsigned int new_code1,
                                unsigned int new_code2)
 {
        int faulted;
-       mm_segment_t old_fs;
 
        safe_store_code(new_code1, ip, faulted);
        if (unlikely(faulted))
@@ -102,10 +101,7 @@ static int ftrace_modify_code_2(unsigned long ip, unsigned int new_code1,
                return -EFAULT;
 
        ip -= 4;
-       old_fs = get_fs();
-       set_fs(KERNEL_DS);
        flush_icache_range(ip, ip + 8);
-       set_fs(old_fs);
 
        return 0;
 }
@@ -114,7 +110,6 @@ static int ftrace_modify_code_2r(unsigned long ip, unsigned int new_code1,
                                 unsigned int new_code2)
 {
        int faulted;
-       mm_segment_t old_fs;
 
        ip += 4;
        safe_store_code(new_code2, ip, faulted);
@@ -126,10 +121,7 @@ static int ftrace_modify_code_2r(unsigned long ip, unsigned int new_code1,
        if (unlikely(faulted))
                return -EFAULT;
 
-       old_fs = get_fs();
-       set_fs(KERNEL_DS);
        flush_icache_range(ip, ip + 8);
-       set_fs(old_fs);
 
        return 0;
 }