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ACPI / watchdog: Fix init failure with overlapping register regions

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Partially overlapping regions cause platform device creation
to fail. The latter of two overlapping resources will fail to be
reserved. Fix this by merging overlapping resource ranges while
enumerating WDAT table entries.

Signed-off-by: Ryan Kennedy <[email protected]>
Acked-by: Mika Westerberg <[email protected]>
Signed-off-by: Rafael J. Wysocki <[email protected]>
This commit is contained in:
Ryan Kennedy 2017-07-15 17:48:18 -04:00 • committed by Rafael J. Wysocki
commit 31e86cb99a
1 changed files with 6 additions and 1 deletions
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7
drivers/acpi/acpi_watchdog.c
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@ -86,7 +86,12 @@ void __init acpi_watchdog_init(void)
found = false;
resource_list_for_each_entry(rentry, &resource_list) {
if (resource_contains(rentry->res, &res)) {
if (rentry->res->flags == res.flags &&
resource_overlaps(rentry->res, &res)) {
if (res.start < rentry->res->start)
rentry->res->start = res.start;
if (res.end > rentry->res->end)
rentry->res->end = res.end;
found = true;
break;
}