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| author | Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> | 2026-08-21 22:10:21 +0100 |
|---|---|---|
| committer | Alexandre Belloni <alexandre.belloni@bootlin.com> | 2026-08-23 21:23:56 +0200 |
| commit | 51458d5b0a1cfb1b6013400abc95aadf16ed2a57 (patch) | |
| tree | ca1d6c83a19610214db8aab17e08adba7448d352 /tools/perf/scripts/python/bin/flamegraph-record | |
| parent | c3e735e9f62022354fc63dbf193cb5614188a33b (diff) | |
rtc: rzn1: Disable alarm interrupt before reprogramming alarm registers
rzn1_rtc_set_alarm() updates RZN1_RTC_ALM, RZN1_RTC_ALH and
RZN1_RTC_ALW using separate MMIO writes without first disabling the
alarm interrupt. If a previous alarm is still enabled, the interrupt
can fire while the alarm registers contain a mixture of old and newly
written values.
Fix this by disabling the alarm interrupt before reprogramming ALM, ALH
and ALW with a call to rzn1_rtc_alarm_irq_enable().
Fixes: b5ad1bf00d2c4 ("rtc: rzn1: Add alarm support")
Cc: stable@vger.kernel.org
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://patch.msgid.link/20260821211032.13554-7-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Diffstat (limited to 'tools/perf/scripts/python/bin/flamegraph-record')
0 files changed, 0 insertions, 0 deletions