diff options
| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-09-09 08:40:22 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-09-09 08:40:22 +0200 |
| commit | f299cd11f7539482e87b2d2d527968a26b33f0ec (patch) | |
| tree | abc4443b5666f567f3b83bf2a0cefe87a8930101 /drivers/clocksource/timer-imx-tpm.c | |
| parent | 9c0c11bb87b09a8b7cdc21ca1090e7b36abe9d09 (diff) | |
| parent | da3ea35007d0af457a0afc87e84fddaebc4e0b63 (diff) | |
Merge 6.11-rc7 into usb-next
We need the USB fixes in here as well, and this also resolves the merge
conflict in:
drivers/usb/typec/ucsi/ucsi.c
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/clocksource/timer-imx-tpm.c')
| -rw-r--r-- | drivers/clocksource/timer-imx-tpm.c | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/drivers/clocksource/timer-imx-tpm.c b/drivers/clocksource/timer-imx-tpm.c index bd64a8a8427f..92c025b70eb6 100644 --- a/drivers/clocksource/timer-imx-tpm.c +++ b/drivers/clocksource/timer-imx-tpm.c @@ -83,20 +83,28 @@ static u64 notrace tpm_read_sched_clock(void) static int tpm_set_next_event(unsigned long delta, struct clock_event_device *evt) { - unsigned long next, now; + unsigned long next, prev, now; - next = tpm_read_counter(); - next += delta; + prev = tpm_read_counter(); + next = prev + delta; writel(next, timer_base + TPM_C0V); now = tpm_read_counter(); /* + * Need to wait CNT increase at least 1 cycle to make sure + * the C0V has been updated into HW. + */ + if ((next & 0xffffffff) != readl(timer_base + TPM_C0V)) + while (now == tpm_read_counter()) + ; + + /* * NOTE: We observed in a very small probability, the bus fabric * contention between GPU and A7 may results a few cycles delay * of writing CNT registers which may cause the min_delta event got * missed, so we need add a ETIME check here in case it happened. */ - return (int)(next - now) <= 0 ? -ETIME : 0; + return (now - prev) >= delta ? -ETIME : 0; } static int tpm_set_state_oneshot(struct clock_event_device *evt) |