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| author | Rafael J. Wysocki <rjw@sisk.pl> | 2011-01-19 22:27:55 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-01-20 18:30:17 -0800 |
| commit | d551d81d6a720542873f478def60baab6b5df403 (patch) | |
| tree | 0abdbd457d8d92ced99048a84b92a067b08d4652 | |
| parent | 2d6d9fd3a54a28c6f67f26eb6c74803307a1b11e (diff) | |
| download | lwn-d551d81d6a720542873f478def60baab6b5df403.tar.gz lwn-d551d81d6a720542873f478def60baab6b5df403.zip | |
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>
| -rw-r--r-- | drivers/acpi/sleep.c | 2 |
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. |