cpufreq: interactive: fix compiling warnings

The gcc warns like:

  cpufreq_interactive.c:745:6: warning: operation on 'ret' may be undefined [-Wsequence-point]

It was introduced by commit cf0fad49d17cb8273ce555dd5b7afab67d7923bf.

Since sprintf(...) just return 1 (one character) in this case, ret should not changed.
Just discarding the result of sprintf(...) leads to the result that
the committer of cf0fad49d17cb8273ce555dd5b7afab67d7923bf wants.

Change-Id: Ifed1cef6d6a31c3ed23dad03a567b3b9eddf3a57
Signed-off-by: Chih-Wei Huang <cwhuang@android-x86.org>

diff --git a/drivers/cpufreq/cpufreq_interactive.c b/drivers/cpufreq/cpufreq_interactive.c
index d72e8c458f69b89a9242bf8fb0b395e620b4f2f2..9f63bd1e4feee26b697ae8deb76bf5fb1ea817cb 100644 (file)
--- a/drivers/cpufreq/cpufreq_interactive.c
+++ b/drivers/cpufreq/cpufreq_interactive.c
@@ -752,7 +752,7 @@ static ssize_t show_target_loads(
                ret += sprintf(buf + ret, "%u%s", tunables->target_loads[i],
                               i & 0x1 ? ":" : " ");
 
-       ret += sprintf(buf + --ret, "\n");
+       sprintf(buf + ret - 1, "\n");
        spin_unlock_irqrestore(&tunables->target_loads_lock, flags);
        return ret;
 }
@@ -792,7 +792,7 @@ static ssize_t show_above_hispeed_delay(
                               tunables->above_hispeed_delay[i],
                               i & 0x1 ? ":" : " ");
 
-       ret += sprintf(buf + --ret, "\n");
+       sprintf(buf + ret - 1, "\n");
        spin_unlock_irqrestore(&tunables->above_hispeed_delay_lock, flags);
        return ret;
 }