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authorPontus Fuchs <pontus.fuchs@gmail.com>2014-02-12 23:04:43 +0400
committerJohn W. Linville <linville@tuxdriver.com>2014-02-14 00:20:17 +0400
commit4bda7faf619a609534bb99c860a0a32ec40b8fb6 (patch)
tree14a6dd93dbac13b9c166dfa1aac78942077e2f1b /drivers/net/wireless
parent546c505bdc64c471be33a5ab525458431d718f5e (diff)
downloadlinux-4bda7faf619a609534bb99c860a0a32ec40b8fb6.tar.xz
wcn36xx: Cache nv to avoid request_firmware on resume path
If wowlan if off mac80211 will stop / start the driver on suspend / resume. This causes problems on resume since request_firmware is called from start. Fix this by caching the nv. Signed-off-by: Pontus Fuchs <pontus.fuchs@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless')
-rw-r--r--drivers/net/wireless/ath/wcn36xx/main.c2
-rw-r--r--drivers/net/wireless/ath/wcn36xx/smd.c22
-rw-r--r--drivers/net/wireless/ath/wcn36xx/wcn36xx.h2
3 files changed, 14 insertions, 12 deletions
diff --git a/drivers/net/wireless/ath/wcn36xx/main.c b/drivers/net/wireless/ath/wcn36xx/main.c
index e64a6784079e..a801aaa76037 100644
--- a/drivers/net/wireless/ath/wcn36xx/main.c
+++ b/drivers/net/wireless/ath/wcn36xx/main.c
@@ -17,6 +17,7 @@
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/module.h>
+#include <linux/firmware.h>
#include <linux/platform_device.h>
#include "wcn36xx.h"
@@ -992,6 +993,7 @@ static int wcn36xx_remove(struct platform_device *pdev)
struct wcn36xx *wcn = hw->priv;
wcn36xx_dbg(WCN36XX_DBG_MAC, "platform remove\n");
+ release_firmware(wcn->nv);
mutex_destroy(&wcn->hal_mutex);
ieee80211_unregister_hw(hw);
diff --git a/drivers/net/wireless/ath/wcn36xx/smd.c b/drivers/net/wireless/ath/wcn36xx/smd.c
index ad93cc791110..d5e90c45a482 100644
--- a/drivers/net/wireless/ath/wcn36xx/smd.c
+++ b/drivers/net/wireless/ath/wcn36xx/smd.c
@@ -251,21 +251,22 @@ static int wcn36xx_smd_rsp_status_check(void *buf, size_t len)
int wcn36xx_smd_load_nv(struct wcn36xx *wcn)
{
- const struct firmware *nv;
struct nv_data *nv_d;
struct wcn36xx_hal_nv_img_download_req_msg msg_body;
int fw_bytes_left;
int ret;
u16 fm_offset = 0;
- ret = request_firmware(&nv, WLAN_NV_FILE, wcn->dev);
- if (ret) {
- wcn36xx_err("Failed to load nv file %s: %d\n",
- WLAN_NV_FILE, ret);
- goto out_free_nv;
+ if (!wcn->nv) {
+ ret = request_firmware(&wcn->nv, WLAN_NV_FILE, wcn->dev);
+ if (ret) {
+ wcn36xx_err("Failed to load nv file %s: %d\n",
+ WLAN_NV_FILE, ret);
+ goto out;
+ }
}
- nv_d = (struct nv_data *)nv->data;
+ nv_d = (struct nv_data *)wcn->nv->data;
INIT_HAL_MSG(msg_body, WCN36XX_HAL_DOWNLOAD_NV_REQ);
msg_body.header.len += WCN36XX_NV_FRAGMENT_SIZE;
@@ -275,7 +276,7 @@ int wcn36xx_smd_load_nv(struct wcn36xx *wcn)
mutex_lock(&wcn->hal_mutex);
do {
- fw_bytes_left = nv->size - fm_offset - 4;
+ fw_bytes_left = wcn->nv->size - fm_offset - 4;
if (fw_bytes_left > WCN36XX_NV_FRAGMENT_SIZE) {
msg_body.last_fragment = 0;
msg_body.nv_img_buffer_size = WCN36XX_NV_FRAGMENT_SIZE;
@@ -313,10 +314,7 @@ int wcn36xx_smd_load_nv(struct wcn36xx *wcn)
out_unlock:
mutex_unlock(&wcn->hal_mutex);
-out_free_nv:
- release_firmware(nv);
-
- return ret;
+out: return ret;
}
static int wcn36xx_smd_start_rsp(struct wcn36xx *wcn, void *buf, size_t len)
diff --git a/drivers/net/wireless/ath/wcn36xx/wcn36xx.h b/drivers/net/wireless/ath/wcn36xx/wcn36xx.h
index c5bd61cffc9e..0c5413f2c2e0 100644
--- a/drivers/net/wireless/ath/wcn36xx/wcn36xx.h
+++ b/drivers/net/wireless/ath/wcn36xx/wcn36xx.h
@@ -171,6 +171,8 @@ struct wcn36xx {
struct device *dev;
struct list_head vif_list;
+ const struct firmware *nv;
+
u8 fw_revision;
u8 fw_version;
u8 fw_minor;