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printk: Correct wrong casting 

log_first_seq and console_seq are 64-bit unsigned integers.
Correct a wrong casting that might cut off the output.

Link: http://lkml.kernel.org/r/1538239553-81805-2-git-send-email-zhe.he@windriver.com
Cc: rostedt@goodmis.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: He Zhe <zhe.he@windriver.com>
[sergey.senozhatsky@gmail.com: More descriptive commit message]
Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Signed-off-by: Petr Mladek <pmladek@suse.com>
This commit is contained in:
He Zhe 2018-09-30 00:45:51 +08:00 committed by Petr Mladek
parent 277fcdb2cf
commit 51a72ab737
1 changed files with 3 additions and 2 deletions
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5
kernel/printk/printk.c
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@ -2358,8 +2358,9 @@ void console_unlock(void)
printk_safe_enter_irqsave(flags);
raw_spin_lock(&logbuf_lock);
if (console_seq < log_first_seq) {
len = sprintf(text, "** %u printk messages dropped **\n",
(unsigned)(log_first_seq - console_seq));
len = sprintf(text,
"** %llu printk messages dropped **\n",
log_first_seq - console_seq);
/* messages are gone, move to first one */
console_seq = log_first_seq;