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ACPI: Register EC io ports in /proc/ioports

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Formerly these have been exposed through /proc/..
Better register them where all IO ports should get registered
and scream loud if someone else claims to use them.

EC data and command port typically should show up like this
then:
...
  0060-0060 : keyboard
  0062-0062 : EC data
  0064-0064 : keyboard
  0066-0066 : EC command
  0070-0071 : rtc0
...

Signed-off-by: Thomas Renninger <trenn@suse.de>

CC: Alexey Starikovskiy <astarikovskiy@suse.de>
CC: Len Brown <lenb@kernel.org>
CC: linux-kernel@vger.kernel.org
CC: linux-acpi@vger.kernel.org
CC: Bjorn Helgaas <bjorn.helgaas@hp.com>
CC: platform-driver-x86@vger.kernel.org
Signed-off-by: Matthew Garrett <mjg@redhat.com>
This commit is contained in:
Thomas Renninger 2010-07-16 13:11:33 +02:00 committed by Matthew Garrett
parent 9827886dce
commit b52e04216f
1 changed files with 10 additions and 2 deletions
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12
drivers/acpi/ec.c
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@ -864,10 +864,18 @@ 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;
else if (ec->command_addr == 0)
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) {
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;