sh: Show all clocks and their state in /proc/clocks

Show all clocks in /proc/clocks, and also show if they are enabled or
disabled. This is useful to show MSTPCR bits on SuperH Mobile processors.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 5 insertions, 9 deletions

diff --git a/arch/sh/kernel/cpu/clock.c b/arch/sh/kernel/cpu/clock.c
index 73334c689e9d..f5eb56e6bc59 100644
--- a/arch/sh/kernel/cpu/clock.c
+++ b/arch/sh/kernel/cpu/clock.c
@@ -308,15 +308,11 @@ static int show_clocks(char *buf, char **start, off_t off,
         list_for_each_entry_reverse(clk, &clock_list, node) {
                 unsigned long rate = clk_get_rate(clk);
 
-                /*
-                 * Don't bother listing dummy clocks with no ancestry
-                 * that only support enable and disable ops.
-                 */
-                if (unlikely(!rate && !clk->parent))
-                        continue;
-
-                p += sprintf(p, "%-12s\t: %ld.%02ldMHz\n", clk->name,
-                             rate / 1000000, (rate % 1000000) / 10000);
+                p += sprintf(p, "%-12s\t: %ld.%02ldMHz\t%s\n", clk->name,
+                             rate / 1000000, (rate % 1000000) / 10000,
+                             ((clk->flags & CLK_ALWAYS_ENABLED) ||
+                              (atomic_read(&clk->kref.refcount) != 1)) ?
+                             "enabled" : "disabled");
         }
 
         return p - buf;