ACPI / PM: Call suspend_nvs_free() earlier during resume

It turns out that some device drivers map pages from the ACPI NVS region
during resume using ioremap(), which conflicts with ioremap_cache() used
for mapping those pages by the NVS save/restore code in nvs.c.

Make the NVS pages mapped by the code in nvs.c be unmapped before device
drivers' resume routines run.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c
index fdd3aeeb6def..d6a8cd14de2e 100644
--- a/drivers/acpi/sleep.c
+++ b/drivers/acpi/sleep.c
@@ -166,6 +166,7 @@ static void acpi_pm_finish(void)
         u32 acpi_state = acpi_target_sleep_state;
 
         acpi_ec_unblock_transactions();
+        suspend_nvs_free();
 
         if (acpi_state == ACPI_STATE_S0)
                 return;
@@ -186,7 +187,6 @@ static void acpi_pm_finish(void)
  */
 static void acpi_pm_end(void)
 {
-        suspend_nvs_free();
         /*
          * This is necessary in case acpi_pm_finish() is not called during a
          * failing transition to a sleep state.