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| author | Chen Gang <gang.chen.5i5j@gmail.com> | 2014-04-25 08:44:59 +0800 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2014-04-28 13:02:12 +0200 |
| commit | 4881f603d7b82df2bc15efd2a272f973a3bf8df1 (patch) | |
| tree | 8bbe70d82d020e1203059d16936de6ca9b191f32 | |
| parent | d1db0eea852497762cab43b905b879dfcd3b8987 (diff) | |
| download | linux-4881f603d7b82df2bc15efd2a272f973a3bf8df1.tar.gz linux-4881f603d7b82df2bc15efd2a272f973a3bf8df1.tar.bz2 linux-4881f603d7b82df2bc15efd2a272f973a3bf8df1.zip | |
PM / hibernate: use unsigned local variables in swsusp_show_speed()
do_div() needs 'u64' type, or it reports warning. And negative number
is meaningless for "speed", so change all signed to unsigned within
swsusp_show_speed().
The related warning (with allmodconfig for unicore32):
CC kernel/power/hibernate.o
kernel/power/hibernate.c: In function ‘swsusp_show_speed’:
kernel/power/hibernate.c:237: warning: comparison of distinct pointer types lacks a cast
Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
[rjw: Subject]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| -rw-r--r-- | kernel/power/hibernate.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/kernel/power/hibernate.c b/kernel/power/hibernate.c index f4f2073711d3..de4b989cc8fd 100644 --- a/kernel/power/hibernate.c +++ b/kernel/power/hibernate.c @@ -228,19 +228,23 @@ static void platform_recover(int platform_mode) void swsusp_show_speed(struct timeval *start, struct timeval *stop, unsigned nr_pages, char *msg) { - s64 elapsed_centisecs64; - int centisecs; - int k; - int kps; + u64 elapsed_centisecs64; + unsigned int centisecs; + unsigned int k; + unsigned int kps; elapsed_centisecs64 = timeval_to_ns(stop) - timeval_to_ns(start); + /* + * If "(s64)elapsed_centisecs64 < 0", it will print long elapsed time, + * it is obvious enough for what went wrong. + */ do_div(elapsed_centisecs64, NSEC_PER_SEC / 100); centisecs = elapsed_centisecs64; if (centisecs == 0) centisecs = 1; /* avoid div-by-zero */ k = nr_pages * (PAGE_SIZE / 1024); kps = (k * 100) / centisecs; - printk(KERN_INFO "PM: %s %d kbytes in %d.%02d seconds (%d.%02d MB/s)\n", + printk(KERN_INFO "PM: %s %u kbytes in %u.%02u seconds (%u.%02u MB/s)\n", msg, k, centisecs / 100, centisecs % 100, kps / 1000, (kps % 1000) / 10); |