orinoco: cache downloadable firmware image in memory for use during resume
If card is using downloadable firmware (like Agere 9.x), firmware has
to be reloaded during resume. It is not possible to use request_firmware
for that, because tasks are still frozen, so request_firmware will
just timeout and fail. So cache firmware image in memory for later
reuse in ->resume method.
Signed-off-by: Andrey Borzenkov <arvidjaar@mail.ru>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/orinoco.c b/drivers/net/wireless/orinoco.c
index 7bd1559..5a39166e 100644
--- a/drivers/net/wireless/orinoco.c
+++ b/drivers/net/wireless/orinoco.c
@@ -487,12 +487,17 @@
if (err)
goto free;
- err = request_firmware(&fw_entry, firmware, priv->dev);
- if (err) {
- printk(KERN_ERR "%s: Cannot find firmware %s\n",
- dev->name, firmware);
- err = -ENOENT;
- goto free;
+ if (priv->cached_fw)
+ fw_entry = priv->cached_fw;
+ else {
+ err = request_firmware(&fw_entry, firmware, priv->dev);
+ if (err) {
+ printk(KERN_ERR "%s: Cannot find firmware %s\n",
+ dev->name, firmware);
+ err = -ENOENT;
+ goto free;
+ }
+ priv->cached_fw = fw_entry;
}
hdr = (const struct orinoco_fw_header *) fw_entry->data;
@@ -535,7 +540,11 @@
dev->name, hermes_present(hw));
abort:
- release_firmware(fw_entry);
+ /* In case of error, assume firmware was bogus and release it */
+ if (err) {
+ priv->cached_fw = NULL;
+ release_firmware(fw_entry);
+ }
free:
kfree(pda);
@@ -3532,6 +3541,8 @@
netif_carrier_off(dev);
priv->last_linkstatus = 0xffff;
+ priv->cached_fw = NULL;
+
return dev;
}
@@ -3543,6 +3554,9 @@
* when we call tasklet_kill it will run one final time,
* emptying the list */
tasklet_kill(&priv->rx_tasklet);
+ if (priv->cached_fw)
+ release_firmware(priv->cached_fw);
+ priv->cached_fw = NULL;
priv->wpa_ie_len = 0;
kfree(priv->wpa_ie);
orinoco_mic_free(priv);