From 5fc3249068c1ed87c6fd485f42ced24132405629 Mon Sep 17 00:00:00 2001 From: Kay Sievers Date: Tue, 8 May 2012 13:04:17 +0200 Subject: [PATCH] kmsg: use do_div() to divide 64bit integer On Tue, May 8, 2012 at 10:02 AM, Stephen Rothwell wrote: > kernel/built-in.o: In function `devkmsg_read': > printk.c:(.text+0x27e8): undefined reference to `__udivdi3' > Most probably the "msg->ts_nsec / 1000" since > ts_nsec is a u64 and this is a 32 bit build ... Reported-by: Stephen Rothwell Signed-off-by: Kay Sievers Signed-off-by: Greg Kroah-Hartman --- kernel/printk.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/kernel/printk.c b/kernel/printk.c index 1ccc6d986cb3..96d4cc892255 100644 --- a/kernel/printk.c +++ b/kernel/printk.c @@ -407,6 +407,7 @@ static ssize_t devkmsg_read(struct file *file, char __user *buf, { struct devkmsg_user *user = file->private_data; struct log *msg; + u64 ts_usec; size_t i; size_t len; ssize_t ret; @@ -441,8 +442,10 @@ static ssize_t devkmsg_read(struct file *file, char __user *buf, } msg = log_from_idx(user->idx); + ts_usec = msg->ts_nsec; + do_div(ts_usec, 1000); len = sprintf(user->buf, "%u,%llu,%llu;", - msg->level, user->seq, msg->ts_nsec / 1000); + msg->level, user->seq, ts_usec); /* escape non-printable characters */ for (i = 0; i < msg->text_len; i++) { -- 2.30.2