diff options
| author | Rob Barnes <robbarnes@google.com> | 2023-01-04 02:15:24 +0100 |
|---|---|---|
| committer | Tzung-Bi Shih <tzungbi@kernel.org> | 2023-01-06 04:48:06 +0100 |
| commit | 957445d730badbea1b3b2ef038e60d2ca38abd0a (patch) | |
| tree | c6a7e6e8e65c785d80b635b63fbf643d2d457863 /drivers/platform | |
| parent | platform/chrome: cros_ec: Poll EC log on EC panic (diff) | |
| download | linux-957445d730badbea1b3b2ef038e60d2ca38abd0a.tar.xz linux-957445d730badbea1b3b2ef038e60d2ca38abd0a.zip | |
platform/chrome: cros_ec: Shutdown on EC Panic
When an EC panic is reported, attempt an orderly shutdown.
Force a shutdown after a brief timeout if the orderly shutdown
fails for any reason.
Using the common hw_protection_shutdown utility function since
an EC panic has the potential to cause hw damage.
This is all best effort. EC should also force a hard reset after a
short timeout.
Signed-off-by: Rob Barnes <robbarnes@google.com>
Reviewed-by: Prashant Malani <pmalani@chromium.org>
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Link: https://lore.kernel.org/r/20230104011524.369764-3-robbarnes@google.com
Diffstat (limited to 'drivers/platform')
| -rw-r--r-- | drivers/platform/chrome/cros_ec_lpc.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/platform/chrome/cros_ec_lpc.c b/drivers/platform/chrome/cros_ec_lpc.c index 5738f1d25091..3708fa75feb1 100644 --- a/drivers/platform/chrome/cros_ec_lpc.c +++ b/drivers/platform/chrome/cros_ec_lpc.c @@ -21,6 +21,7 @@ #include <linux/platform_data/cros_ec_proto.h> #include <linux/platform_device.h> #include <linux/printk.h> +#include <linux/reboot.h> #include <linux/suspend.h> #include "cros_ec.h" @@ -323,6 +324,8 @@ static void cros_ec_lpc_acpi_notify(acpi_handle device, u32 value, void *data) if (value == ACPI_NOTIFY_CROS_EC_PANIC) { dev_emerg(ec_dev->dev, "CrOS EC Panic Reported. Shutdown is imminent!"); blocking_notifier_call_chain(&ec_dev->panic_notifier, 0, ec_dev); + /* Begin orderly shutdown. Force shutdown after 1 second. */ + hw_protection_shutdown("CrOS EC Panic", 1000); /* Do not query for other events after a panic is reported */ return; } |