powerpc/rtas-rtc: remove sideeffects of printk_ratelimit

Don't use printk_ratelimit() as an additional condition for returning
on an error. Because when the ratelimit is reached, printk_ratelimit
will return 0 and e.g. in rtas_get_boot_time won't check for an error
condition.

Signed-off-by: Christian Dietrich <christian.dietrich@informatik.uni-erlangen.de>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

diff --git a/arch/powerpc/kernel/rtas-rtc.c b/arch/powerpc/kernel/rtas-rtc.c
index 77578c0..c57c193 100644 (file)
--- a/arch/powerpc/kernel/rtas-rtc.c
+++ b/arch/powerpc/kernel/rtas-rtc.c
@@ -4,6 +4,7 @@
 #include <linux/init.h>
 #include <linux/rtc.h>
 #include <linux/delay.h>
+#include <linux/ratelimit.h>
 #include <asm/prom.h>
 #include <asm/rtas.h>
 #include <asm/time.h>
@@ -29,9 +30,10 @@ unsigned long __init rtas_get_boot_time(void)
                }
        } while (wait_time && (get_tb() < max_wait_tb));
 
-       if (error != 0 && printk_ratelimit()) {
-               printk(KERN_WARNING "error: reading the clock failed (%d)\n",
-                       error);
+       if (error != 0) {
+               printk_ratelimited(KERN_WARNING
+                                  "error: reading the clock failed (%d)\n",
+                                  error);
                return 0;
        }
 
@@ -55,19 +57,21 @@ void rtas_get_rtc_time(struct rtc_time *rtc_tm)
 
                wait_time = rtas_busy_delay_time(error);
                if (wait_time) {
-                       if (in_interrupt() && printk_ratelimit()) {
+                       if (in_interrupt()) {
                                memset(rtc_tm, 0, sizeof(struct rtc_time));
-                               printk(KERN_WARNING "error: reading clock"
-                                      " would delay interrupt\n");
+                               printk_ratelimited(KERN_WARNING
+                                                  "error: reading clock "
+                                                  "would delay interrupt\n");
                                return; /* delay not allowed */
                        }
                        msleep(wait_time);
                }
        } while (wait_time && (get_tb() < max_wait_tb));
 
-        if (error != 0 && printk_ratelimit()) {
-                printk(KERN_WARNING "error: reading the clock failed (%d)\n",
-                      error);
+       if (error != 0) {
+               printk_ratelimited(KERN_WARNING
+                                  "error: reading the clock failed (%d)\n",
+                                  error);
                return;
         }
 
@@ -99,9 +103,10 @@ int rtas_set_rtc_time(struct rtc_time *tm)
                }
        } while (wait_time && (get_tb() < max_wait_tb));
 
-        if (error != 0 && printk_ratelimit())
-                printk(KERN_WARNING "error: setting the clock failed (%d)\n",
-                      error);
+       if (error != 0)
+               printk_ratelimited(KERN_WARNING
+                                  "error: setting the clock failed (%d)\n",
+                                  error);
 
         return 0;
 }