diff options
| author | Alexey Starikovskiy <astarikovskiy@suse.de> | 2008-01-01 22:12:55 +0300 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2008-01-01 22:12:55 +0300 |
| commit | c04209a7948b95e8c52084e8595e74e9428653d3 (patch) | |
| tree | 8a7bed4071550e333f1a5e81558fc55a470cd554 /drivers/acpi/ec.c | |
| parent | e697789d64f8748cb219d7f5c413c512953802cc (diff) | |
| download | linux-c04209a7948b95e8c52084e8595e74e9428653d3.tar.xz | |
ACPI: EC: Enable boot EC before bus_scan
Some _STA methods called during bus_scan() might require EC region handler,
which might be enabled later in the scan.
Enable it explicitly before scan to avoid errors.
Reference: http://bugzilla.kernel.org/show_bug.cgi?id=9627
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi/ec.c')
| -rw-r--r-- | drivers/acpi/ec.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c index d411017f8c06..97dc16155a55 100644 --- a/drivers/acpi/ec.c +++ b/drivers/acpi/ec.c @@ -892,6 +892,17 @@ static int acpi_ec_stop(struct acpi_device *device, int type) return 0; } +int __init acpi_boot_ec_enable(void) +{ + if (!boot_ec || boot_ec->handlers_installed) + return 0; + if (!ec_install_handlers(boot_ec)) { + first_ec = boot_ec; + return 0; + } + return -EFAULT; +} + int __init acpi_ec_ecdt_probe(void) { int ret; @@ -924,9 +935,10 @@ int __init acpi_ec_ecdt_probe(void) goto error; /* We really need to limit this workaround, the only ASUS, * which needs it, has fake EC._INI method, so use it as flag. + * Keep boot_ec struct as it will be needed soon. */ if (ACPI_FAILURE(acpi_get_handle(boot_ec->handle, "_INI", &x))) - goto error; + return -ENODEV; } ret = ec_install_handlers(boot_ec); |