Commit e87e0de4 authored by Ksenija Stanojevic's avatar Ksenija Stanojevic Committed by Greg Kroah-Hartman

Staging: fbtft: Fix bug in fbtft-core

commit fc1e2c8ea85e109acf09e74789e9b852f6eed251 upstream.

Commit 367e8560 introduced a bug
in fbtft-core where fps is always 0, this is because variable
update_time is not assigned correctly.
Signed-off-by: default avatarKsenija Stanojevic <>
Fixes: 367e8560 ("Staging: fbtbt: Replace timespec with ktime_t")
Signed-off-by: default avatarGreg Kroah-Hartman <>
parent 540ce809
......@@ -391,11 +391,11 @@ 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);
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