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pl031: Update last RTCLR value on write in case it's read back

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The PL031 allows you to read RTCLR, which is meant to give you the last
value written. PL031State has an lr field which is used when reading
from RTCLR, and is present in the VM migration state, but we never
actually update it, so it always reads as its initial 0 value.

Cc: qemu-stable@nongnu.org
Signed-off-by: Jessica Clarke <jrtc27@jrtc27.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-id: 20240222000341.1562443-1-jrtc27@jrtc27.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
(cherry picked from commit 4d28d57c9f2eb1cdf70b29cea6e50282e010075b)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
This commit is contained in:
Jessica Clarke 2024-02-26 14:07:24 +00:00 committed by Michael Tokarev
parent e4e36e65c9
commit a0fb839d0a
1 changed files with 1 additions and 0 deletions
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hw/rtc/pl031.c
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@ -141,6 +141,7 @@ static void pl031_write(void * opaque, hwaddr offset,
g_autofree const char *qom_path = object_get_canonical_path(opaque);
struct tm tm;
s->lr = value;
s->tick_offset += value - pl031_get_count(s);
qemu_get_timedate(&tm, s->tick_offset);