kdb: Use for_each_console() helper

Replace open coded single-linked list iteration loop with for_each_console()
helper in use.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>

diff --git a/kernel/debug/kdb/kdb_io.c b/kernel/debug/kdb/kdb_io.c
index 8bcdded..924bc92 100644 (file)
--- a/kernel/debug/kdb/kdb_io.c
+++ b/kernel/debug/kdb/kdb_io.c
@@ -553,7 +553,7 @@ int vkdb_printf(enum kdb_msgsrc src, const char *fmt, va_list ap)
        int this_cpu, old_cpu;
        char *cp, *cp2, *cphold = NULL, replaced_byte = ' ';
        char *moreprompt = "more> ";
-       struct console *c = console_drivers;
+       struct console *c;
        unsigned long uninitialized_var(flags);
 
        /* Serialize kdb_printf if multiple cpus try to write at once.
@@ -698,10 +698,9 @@ kdb_printit:
                                cp2++;
                        }
                }
-               while (c) {
+               for_each_console(c) {
                        c->write(c, cp, retlen - (cp - kdb_buffer));
                        touch_nmi_watchdog();
-                       c = c->next;
                }
        }
        if (logging) {
@@ -752,7 +751,6 @@ kdb_printit:
                        moreprompt = "more> ";
 
                kdb_input_flush();
-               c = console_drivers;
 
                if (dbg_io_ops && !dbg_io_ops->is_console) {
                        len = strlen(moreprompt);
@@ -762,10 +760,9 @@ kdb_printit:
                                cp++;
                        }
                }
-               while (c) {
+               for_each_console(c) {
                        c->write(c, moreprompt, strlen(moreprompt));
                        touch_nmi_watchdog();
-                       c = c->next;
                }
 
                if (logging)