diff options
Diffstat (limited to 'drivers/acpi')
| -rw-r--r-- | drivers/acpi/reboot.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/acpi/reboot.c b/drivers/acpi/reboot.c index ca707f5b521d..2a61f884e222 100644 --- a/drivers/acpi/reboot.c +++ b/drivers/acpi/reboot.c @@ -3,6 +3,7 @@ #include <linux/pci.h> #include <linux/acpi.h> #include <acpi/reboot.h> +#include <linux/delay.h> #ifdef CONFIG_PCI static void acpi_pci_reboot(struct acpi_generic_address *rr, u8 reset_value) @@ -66,4 +67,14 @@ void acpi_reboot(void) acpi_reset(); break; } + + /* + * Some platforms do not shut down immediately after writing to the + * ACPI reset register, and this results in racing with the + * subsequent reboot mechanism. + * + * The 15ms delay has been found to be long enough for the system + * to reboot on the affected platforms. + */ + mdelay(15); } |