From 4fb30784c720b863203957f76e3fde0d53932746 Mon Sep 17 00:00:00 2001 From: Andrey Borzenkov Date: Sun, 19 Oct 2008 12:06:11 +0400 Subject: [PATCH] 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 Signed-off-by: John W. Linville --- drivers/net/wireless/orinoco.c | 28 +++++++++++++++++++++------- drivers/net/wireless/orinoco.h | 5 +++++ 2 files changed, 26 insertions(+), 7 deletions(-) diff --git a/drivers/net/wireless/orinoco.c b/drivers/net/wireless/orinoco.c index 7bd1559e8711..5a39166e2a0f 100644 --- a/drivers/net/wireless/orinoco.c +++ b/drivers/net/wireless/orinoco.c @@ -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); diff --git a/drivers/net/wireless/orinoco.h b/drivers/net/wireless/orinoco.h index 981570bd3b9d..8c2953834923 100644 --- a/drivers/net/wireless/orinoco.h +++ b/drivers/net/wireless/orinoco.h @@ -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 -- 2.39.5