acer-wmi: schedule threeg and interface sysfs for feature removal

we can now autodetect internal 3G device and already have the threeg
rfkill device. So, we plan to remove threeg sysfs support for it's no
longer necessary.

We also plan to remove interface sysfs file that exposed which ACPI-WMI
interface that was used by acer-wmi driver. It will replaced by information
log when acer-wmi initial.

We keep it around for userspace compatibility reasons, schedule removal
in 2012.

Cc: Carlos Corbacho <carlos@strangeworlds.co.uk>
Cc: Matthew Garrett <mjg@redhat.com>
Cc: Dmitry Torokhov <dtor@mail.ru>
Cc: Corentin Chary <corentincj@iksaif.net>
Acked-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Lee, Chun-Yi <jlee@novell.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>

diff --git a/Documentation/feature-removal-schedule.txt b/Documentation/feature-removal-schedule.txt
index 72e238465b0b6ca452ee4905dc097007b9ff3dc0..c4c9e13f1b745de0fbcdfec822542044ff47fc62 100644 (file)
--- a/Documentation/feature-removal-schedule.txt
+++ b/Documentation/feature-removal-schedule.txt
@@ -583,3 +583,16 @@ Why:       Superseded by the UVCIOC_CTRL_QUERY ioctl.
 Who:   Laurent Pinchart <laurent.pinchart@ideasonboard.com>
 
 ----------------------------
+
+What:   threeg and interface sysfs files in /sys/devices/platform/acer-wmi
+When:   2012
+Why:    In 2.6.40, we can now autodetect internal 3G device and already have
+       the threeg rfkill device. So, we plan to remove threeg sysfs support
+       for it's no longer necessary.
+
+       We also plan to remove interface sysfs file that exposed which ACPI-WMI
+       interface that was used by acer-wmi driver. It will replaced by
+       information log when acer-wmi initial.
+Who:    Lee, Chun-Yi <jlee@novell.com>
+
+----------------------------

diff --git a/drivers/platform/x86/acer-wmi.c b/drivers/platform/x86/acer-wmi.c
index e1c4938b301bbcdacbcc1303e9b8cde5bf288585..089db868799ee0887328bd0b9a89667af51fc379 100644 (file)
--- a/drivers/platform/x86/acer-wmi.c
+++ b/drivers/platform/x86/acer-wmi.c
@@ -1400,6 +1400,9 @@ static ssize_t show_bool_threeg(struct device *dev,
 {
        u32 result; \
        acpi_status status;
+
+       pr_info("This threeg sysfs will be removed in 2012"
+               " - used by: %s\n", current->comm);
        if (wmi_has_guid(WMID_GUID3))
                status = wmid3_get_device_status(&result,
                                ACER_WMID3_GDS_THREEG);
@@ -1415,8 +1418,10 @@ static ssize_t set_bool_threeg(struct device *dev,
 {
        u32 tmp = simple_strtoul(buf, NULL, 10);
        acpi_status status = set_u32(tmp, ACER_CAP_THREEG);
-               if (ACPI_FAILURE(status))
-                       return -EINVAL;
+       pr_info("This threeg sysfs will be removed in 2012"
+               " - used by: %s\n", current->comm);
+       if (ACPI_FAILURE(status))
+               return -EINVAL;
        return count;
 }
 static DEVICE_ATTR(threeg, S_IRUGO | S_IWUSR, show_bool_threeg,
@@ -1425,6 +1430,8 @@ static DEVICE_ATTR(threeg, S_IRUGO | S_IWUSR, show_bool_threeg,
 static ssize_t show_interface(struct device *dev, struct device_attribute *attr,
        char *buf)
 {
+       pr_info("This interface sysfs will be removed in 2012"
+               " - used by: %s\n", current->comm);
        switch (interface->type) {
        case ACER_AMW0:
                return sprintf(buf, "AMW0\n");