diff options
| author | Thomas Renninger <trenn@suse.de> | 2010-07-29 22:08:44 +0200 |
|---|---|---|
| committer | Matthew Garrett <mjg@redhat.com> | 2010-08-03 09:49:13 -0400 |
| commit | de4f10466e9347a2f1bfe39e501539557bed2c4b (patch) | |
| tree | 0d4c3de512b213b8d99c709d24b6f9daed106d25 /drivers/acpi/ec.c | |
| parent | 7a0691c16f795cb7b69dcbaa61543e73b8865c4f (diff) | |
| download | lwn-de4f10466e9347a2f1bfe39e501539557bed2c4b.tar.gz lwn-de4f10466e9347a2f1bfe39e501539557bed2c4b.zip | |
acpi ec: Fix possible double io port registration
which will result in a harmless but ugly WARN message on
some machines.
Signed-off-by: Thomas Renninger <trenn@suse.de>
CC: mjg59@srcf.ucam.org
CC: platform-driver-x86@vger.kernel.org
CC: linux-acpi@vger.kernel.org
CC: astarikovskiy@suse.de
CC: akpm@linux-foundation.org
Signed-off-by: Matthew Garrett <mjg@redhat.com>
Diffstat (limited to 'drivers/acpi/ec.c')
| -rw-r--r-- | drivers/acpi/ec.c | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c index 265a99c1eb14..1fa0aafebe2a 100644 --- a/drivers/acpi/ec.c +++ b/drivers/acpi/ec.c @@ -818,6 +818,12 @@ static int acpi_ec_add(struct acpi_device *device) if (!first_ec) first_ec = ec; device->driver_data = ec; + + WARN(!request_region(ec->data_addr, 1, "EC data"), + "Could not request EC data io port 0x%lx", ec->data_addr); + WARN(!request_region(ec->command_addr, 1, "EC cmd"), + "Could not request EC cmd io port 0x%lx", ec->command_addr); + pr_info(PREFIX "GPE = 0x%lx, I/O: command/status = 0x%lx, data = 0x%lx\n", ec->gpe, ec->command_addr, ec->data_addr); @@ -844,6 +850,8 @@ static int acpi_ec_remove(struct acpi_device *device, int type) kfree(handler); } mutex_unlock(&ec->lock); + release_region(ec->data_addr, 1); + release_region(ec->command_addr, 1); device->driver_data = NULL; if (ec == first_ec) first_ec = NULL; @@ -864,18 +872,10 @@ ec_parse_io_ports(struct acpi_resource *resource, void *context) * the second address region returned is the status/command * port. */ - if (ec->data_addr == 0) { + if (ec->data_addr == 0) ec->data_addr = resource->data.io.minimum; - WARN(!request_region(ec->data_addr, 1, "EC data"), - "Could not request EC data io port %lu", - ec->data_addr); - } - else if (ec->command_addr == 0) { + else if (ec->command_addr == 0) ec->command_addr = resource->data.io.minimum; - WARN(!request_region(ec->command_addr, 1, "EC command"), - "Could not request EC command io port %lu", - ec->command_addr); - } else return AE_CTRL_TERMINATE; |