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ACPI: PM: s2idle: Add missing checks to acpi_s2idle_begin_lps0()

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Commit 32ece31db4 ("ACPI: PM: s2idle: Only retrieve constraints
when needed"), that attempted to avoid useless evaluation of LPS0 _DSM
Function 1 in lps0_device_attach(), forgot to add checks for
lps0_device_handle and sleep_no_lps0 to acpi_s2idle_begin_lps0()
where they should be done before calling lpi_device_get_constraints()
or lpi_device_get_constraints_amd().

Add the missing checks.

Fixes: 32ece31db4 ("ACPI: PM: s2idle: Only retrieve constraints when needed")
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Mario Limonciello (AMD) <superm1@kernel.org>
Link: https://patch.msgid.link/2818730.mvXUDI8C0e@rafael.j.wysocki
This commit is contained in:
Rafael J. Wysocki
2026-01-12 19:33:29 +01:00
parent 0f61b1860c
commit 8f334e3522
1 changed files with 2 additions and 1 deletions
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drivers/acpi/x86/s2idle.c
+2 -1
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@@ -515,7 +515,8 @@ static struct acpi_scan_handler lps0_handler = {
static int acpi_s2idle_begin_lps0(void)
{
if (pm_debug_messages_on && !lpi_constraints_table) {
if (lps0_device_handle && !sleep_no_lps0 && pm_debug_messages_on &&
!lpi_constraints_table) {
if (acpi_s2idle_vendor_amd())
lpi_device_get_constraints_amd();
else