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Staging: fbtft: Fix bug in fbtft-core

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commit fc1e2c8ea85e109acf09e74789e9b852f6eed251 upstream.

Commit 367e8560e8d7a62d96e9b1d644028a3816e04206 introduced a bug
in fbtft-core where fps is always 0, this is because variable
update_time is not assigned correctly.

Signed-off-by: Ksenija Stanojevic <ksenija.stanojevic@gmail.com>
Fixes: 367e8560e8d7 ("Staging: fbtbt: Replace timespec with ktime_t")
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ksenija Stanojevic 2016-10-02 17:42:35 +02:00 committed by Greg Kroah-Hartman
parent 62dd9cf78b
commit be93c69e9b
1 changed files with 2 additions and 2 deletions
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4
drivers/staging/fbtft/fbtft-core.c
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@ -392,11 +392,11 @@ static void fbtft_update_display(struct fbtft_par *par, unsigned start_line,
if (unlikely(timeit)) {
ts_end = ktime_get();
if (ktime_to_ns(par->update_time))
if (!ktime_to_ns(par->update_time))
par->update_time = ts_start;
par->update_time = ts_start;
fps = ktime_us_delta(ts_start, par->update_time);
par->update_time = ts_start;
fps = fps ? 1000000 / fps : 0;
throughput = ktime_us_delta(ts_end, ts_start);