redonkable/alistair23-linux
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orinoco: cache downloadable firmware image in memory for use during resume

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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>
This commit is contained in:
Andrey Borzenkov 2008-10-19 12:06:11 +04:00 committed by John W. Linville
parent 0df6cbb7d8
commit 4fb30784c7
2 changed files with 26 additions and 7 deletions
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28
drivers/net/wireless/orinoco.c
View file

@ -487,12 +487,17 @@ orinoco_dl_firmware(struct orinoco_private *priv,
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 @@ orinoco_dl_firmware(struct orinoco_private *priv,
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 @@ struct net_device
netif_carrier_off(dev);
priv->last_linkstatus = 0xffff;
priv->cached_fw = NULL;
return dev;
}
@ -3543,6 +3554,9 @@ void free_orinocodev(struct net_device *dev)
* 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);

5
drivers/net/wireless/orinoco.h
View file

@ -66,6 +66,8 @@ struct orinoco_rx_data {
struct list_head list;
};
struct firmware;
struct orinoco_private {
void *card; /* Pointer to card dependent structure */
struct device *dev;
@ -164,6 +166,9 @@ struct orinoco_private {
unsigned int wpa_enabled:1;
unsigned int tkip_cm_active:1;
unsigned int key_mgmt:3;
/* Cached in memory firmware to use in ->resume */
const struct firmware *cached_fw;
};
#ifdef ORINOCO_DEBUG