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path: root/drivers/net/wireless/b43/main.c
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Diffstat (limited to 'drivers/net/wireless/b43/main.c')
-rw-r--r--drivers/net/wireless/b43/main.c70
1 files changed, 54 insertions, 16 deletions
diff --git a/drivers/net/wireless/b43/main.c b/drivers/net/wireless/b43/main.c
index 8fdba9415c04..6c3d9ea0a9f8 100644
--- a/drivers/net/wireless/b43/main.c
+++ b/drivers/net/wireless/b43/main.c
@@ -1544,6 +1544,30 @@ static void b43_write_probe_resp_template(struct b43_wldev *dev,
kfree(probe_resp_data);
}
+static void b43_upload_beacon0(struct b43_wldev *dev)
+{
+ struct b43_wl *wl = dev->wl;
+
+ if (wl->beacon0_uploaded)
+ return;
+ b43_write_beacon_template(dev, 0x68, 0x18);
+ /* FIXME: Probe resp upload doesn't really belong here,
+ * but we don't use that feature anyway. */
+ b43_write_probe_resp_template(dev, 0x268, 0x4A,
+ &__b43_ratetable[3]);
+ wl->beacon0_uploaded = 1;
+}
+
+static void b43_upload_beacon1(struct b43_wldev *dev)
+{
+ struct b43_wl *wl = dev->wl;
+
+ if (wl->beacon1_uploaded)
+ return;
+ b43_write_beacon_template(dev, 0x468, 0x1A);
+ wl->beacon1_uploaded = 1;
+}
+
static void handle_irq_beacon(struct b43_wldev *dev)
{
struct b43_wl *wl = dev->wl;
@@ -1568,24 +1592,27 @@ static void handle_irq_beacon(struct b43_wldev *dev)
return;
}
- if (!beacon0_valid) {
- if (!wl->beacon0_uploaded) {
- b43_write_beacon_template(dev, 0x68, 0x18);
- b43_write_probe_resp_template(dev, 0x268, 0x4A,
- &__b43_ratetable[3]);
- wl->beacon0_uploaded = 1;
- }
+ if (unlikely(wl->beacon_templates_virgin)) {
+ /* We never uploaded a beacon before.
+ * Upload both templates now, but only mark one valid. */
+ wl->beacon_templates_virgin = 0;
+ b43_upload_beacon0(dev);
+ b43_upload_beacon1(dev);
cmd = b43_read32(dev, B43_MMIO_MACCMD);
cmd |= B43_MACCMD_BEACON0_VALID;
b43_write32(dev, B43_MMIO_MACCMD, cmd);
- } else if (!beacon1_valid) {
- if (!wl->beacon1_uploaded) {
- b43_write_beacon_template(dev, 0x468, 0x1A);
- wl->beacon1_uploaded = 1;
+ } else {
+ if (!beacon0_valid) {
+ b43_upload_beacon0(dev);
+ cmd = b43_read32(dev, B43_MMIO_MACCMD);
+ cmd |= B43_MACCMD_BEACON0_VALID;
+ b43_write32(dev, B43_MMIO_MACCMD, cmd);
+ } else if (!beacon1_valid) {
+ b43_upload_beacon1(dev);
+ cmd = b43_read32(dev, B43_MMIO_MACCMD);
+ cmd |= B43_MACCMD_BEACON1_VALID;
+ b43_write32(dev, B43_MMIO_MACCMD, cmd);
}
- cmd = b43_read32(dev, B43_MMIO_MACCMD);
- cmd |= B43_MACCMD_BEACON1_VALID;
- b43_write32(dev, B43_MMIO_MACCMD, cmd);
}
}
@@ -4073,6 +4100,9 @@ static int b43_op_start(struct ieee80211_hw *hw)
wl->filter_flags = 0;
wl->radiotap_enabled = 0;
b43_qos_clear(wl);
+ wl->beacon0_uploaded = 0;
+ wl->beacon1_uploaded = 0;
+ wl->beacon_templates_virgin = 1;
/* First register RFkill.
* LEDs that are registered later depend on it. */
@@ -4241,7 +4271,9 @@ static void b43_chip_reset(struct work_struct *work)
goto out;
}
}
- out:
+out:
+ if (err)
+ wl->current_dev = NULL; /* Failed to init the dev. */
mutex_unlock(&wl->mutex);
if (err)
b43err(wl, "Controller restart FAILED\n");
@@ -4382,9 +4414,11 @@ static void b43_one_core_detach(struct ssb_device *dev)
struct b43_wldev *wldev;
struct b43_wl *wl;
+ /* Do not cancel ieee80211-workqueue based work here.
+ * See comment in b43_remove(). */
+
wldev = ssb_get_drvdata(dev);
wl = wldev->wl;
- cancel_work_sync(&wldev->restart_work);
b43_debugfs_remove_device(wldev);
b43_wireless_core_detach(wldev);
list_del(&wldev->list);
@@ -4569,6 +4603,10 @@ static void b43_remove(struct ssb_device *dev)
struct b43_wl *wl = ssb_get_devtypedata(dev);
struct b43_wldev *wldev = ssb_get_drvdata(dev);
+ /* We must cancel any work here before unregistering from ieee80211,
+ * as the ieee80211 unreg will destroy the workqueue. */
+ cancel_work_sync(&wldev->restart_work);
+
B43_WARN_ON(!wl);
if (wl->current_dev == wldev)
ieee80211_unregister_hw(wl->hw);