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path: root/drivers/acpi/ec.c
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Diffstat (limited to 'drivers/acpi/ec.c')
-rw-r--r--drivers/acpi/ec.c18
1 files changed, 14 insertions, 4 deletions
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index b19a18dd994f..7edaccce6640 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -445,6 +445,16 @@ int ec_transaction(u8 command,
445 445
446EXPORT_SYMBOL(ec_transaction); 446EXPORT_SYMBOL(ec_transaction);
447 447
448/* Get the handle to the EC device */
449acpi_handle ec_get_handle(void)
450{
451 if (!first_ec)
452 return NULL;
453 return first_ec->handle;
454}
455
456EXPORT_SYMBOL(ec_get_handle);
457
448void acpi_ec_block_transactions(void) 458void acpi_ec_block_transactions(void)
449{ 459{
450 struct acpi_ec *ec = first_ec; 460 struct acpi_ec *ec = first_ec;
@@ -812,10 +822,10 @@ static int acpi_ec_add(struct acpi_device *device)
812 first_ec = ec; 822 first_ec = ec;
813 device->driver_data = ec; 823 device->driver_data = ec;
814 824
815 WARN(!request_region(ec->data_addr, 1, "EC data"), 825 ret = !!request_region(ec->data_addr, 1, "EC data");
816 "Could not request EC data io port 0x%lx", ec->data_addr); 826 WARN(!ret, "Could not request EC data io port 0x%lx", ec->data_addr);
817 WARN(!request_region(ec->command_addr, 1, "EC cmd"), 827 ret = !!request_region(ec->command_addr, 1, "EC cmd");
818 "Could not request EC cmd io port 0x%lx", ec->command_addr); 828 WARN(!ret, "Could not request EC cmd io port 0x%lx", ec->command_addr);
819 829
820 pr_info(PREFIX "GPE = 0x%lx, I/O: command/status = 0x%lx, data = 0x%lx\n", 830 pr_info(PREFIX "GPE = 0x%lx, I/O: command/status = 0x%lx, data = 0x%lx\n",
821 ec->gpe, ec->command_addr, ec->data_addr); 831 ec->gpe, ec->command_addr, ec->data_addr);