staging: r8712u: Use asynchronous firmware loading
In https://bugs.archlinux.org/task/27996, failure of driver r8712u is reported, with a timeout during module loading due to synchronous loading of the firmware. The code now uses request_firmware_nowait(). Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net> Cc: stable <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Larry Finger
Greg Kroah-Hartman
parent
737912e11b
commit
8c213fa591
@ -37,6 +37,8 @@ struct _adapter;
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#include "wlan_bssdef.h"
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#include "rtl8712_spec.h"
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#include "rtl8712_hal.h"
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#include <linux/mutex.h>
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#include <linux/completion.h>
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enum _NIC_VERSION {
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RTL8711_NIC,
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@ -168,6 +170,7 @@ struct _adapter {
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s32 bSurpriseRemoved;
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u32 IsrContent;
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u32 ImrContent;
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bool fw_found;
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u8 EepromAddressSize;
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u8 hw_init_completed;
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struct task_struct *cmdThread;
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@ -184,6 +187,10 @@ struct _adapter {
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_workitem wkFilterRxFF0;
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u8 blnEnableRxFF0Filter;
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spinlock_t lockRxFF0Filter;
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const struct firmware *fw;
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struct usb_interface *pusb_intf;
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struct mutex mutex_start;
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struct completion rtl8712_fw_ready;
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};
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static inline u8 *myid(struct eeprom_priv *peepriv)
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@ -42,29 +42,56 @@
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#define FWBUFF_ALIGN_SZ 512
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#define MAX_DUMP_FWSZ 49152 /*default = 49152 (48k)*/
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static u32 rtl871x_open_fw(struct _adapter *padapter, void **pphfwfile_hdl,
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const u8 **ppmappedfw)
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static void rtl871x_load_fw_cb(const struct firmware *firmware, void *context)
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{
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int rc;
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const char firmware_file[] = "rtlwifi/rtl8712u.bin";
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const struct firmware **praw = (const struct firmware **)
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(pphfwfile_hdl);
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struct dvobj_priv *pdvobjpriv = (struct dvobj_priv *)
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(&padapter->dvobjpriv);
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struct usb_device *pusbdev = pdvobjpriv->pusbdev;
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struct _adapter *padapter = context;
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complete(&padapter->rtl8712_fw_ready);
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if (!firmware) {
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struct usb_device *udev = padapter->dvobjpriv.pusbdev;
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struct usb_interface *pusb_intf = padapter->pusb_intf;
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printk(KERN_ERR "r8712u: Firmware request failed\n");
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padapter->fw_found = false;
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usb_put_dev(udev);
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usb_set_intfdata(pusb_intf, NULL);
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return;
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}
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padapter->fw = firmware;
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padapter->fw_found = true;
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/* firmware available - start netdev */
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register_netdev(padapter->pnetdev);
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}
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static const char firmware_file[] = "rtlwifi/rtl8712u.bin";
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int rtl871x_load_fw(struct _adapter *padapter)
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{
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struct device *dev = &padapter->dvobjpriv.pusbdev->dev;
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int rc;
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init_completion(&padapter->rtl8712_fw_ready);
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printk(KERN_INFO "r8712u: Loading firmware from \"%s\"\n",
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firmware_file);
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rc = request_firmware(praw, firmware_file, &pusbdev->dev);
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if (rc < 0) {
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printk(KERN_ERR "r8712u: Unable to load firmware\n");
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printk(KERN_ERR "r8712u: Install latest linux-firmware\n");
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rc = request_firmware_nowait(THIS_MODULE, 1, firmware_file, dev,
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GFP_KERNEL, padapter, rtl871x_load_fw_cb);
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if (rc)
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printk(KERN_ERR "r8712u: Firmware request error %d\n", rc);
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return rc;
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}
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MODULE_FIRMWARE("rtlwifi/rtl8712u.bin");
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static u32 rtl871x_open_fw(struct _adapter *padapter, const u8 **ppmappedfw)
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{
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const struct firmware **praw = &padapter->fw;
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if (padapter->fw->size > 200000) {
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printk(KERN_ERR "r8172u: Badfw->size of %d\n",
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(int)padapter->fw->size);
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return 0;
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}
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*ppmappedfw = (u8 *)((*praw)->data);
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return (*praw)->size;
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}
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MODULE_FIRMWARE("rtlwifi/rtl8712u.bin");
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static void fill_fwpriv(struct _adapter *padapter, struct fw_priv *pfwpriv)
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{
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@ -142,18 +169,17 @@ static u8 rtl8712_dl_fw(struct _adapter *padapter)
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uint dump_imem_sz, imem_sz, dump_emem_sz, emem_sz; /* max = 49152; */
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struct fw_hdr fwhdr;
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u32 ulfilelength; /* FW file size */
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void *phfwfile_hdl = NULL;
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const u8 *pmappedfw = NULL;
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u8 *ptmpchar = NULL, *ppayload, *ptr;
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struct tx_desc *ptx_desc;
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u32 txdscp_sz = sizeof(struct tx_desc);
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u8 ret = _FAIL;
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ulfilelength = rtl871x_open_fw(padapter, &phfwfile_hdl, &pmappedfw);
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ulfilelength = rtl871x_open_fw(padapter, &pmappedfw);
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if (pmappedfw && (ulfilelength > 0)) {
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update_fwhdr(&fwhdr, pmappedfw);
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if (chk_fwhdr(&fwhdr, ulfilelength) == _FAIL)
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goto firmware_rel;
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return ret;
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fill_fwpriv(padapter, &fwhdr.fwpriv);
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/* firmware check ok */
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maxlen = (fwhdr.img_IMEM_size > fwhdr.img_SRAM_size) ?
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@ -161,7 +187,7 @@ static u8 rtl8712_dl_fw(struct _adapter *padapter)
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maxlen += txdscp_sz;
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ptmpchar = _malloc(maxlen + FWBUFF_ALIGN_SZ);
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if (ptmpchar == NULL)
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goto firmware_rel;
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return ret;
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ptx_desc = (struct tx_desc *)(ptmpchar + FWBUFF_ALIGN_SZ -
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((addr_t)(ptmpchar) & (FWBUFF_ALIGN_SZ - 1)));
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@ -297,8 +323,6 @@ static u8 rtl8712_dl_fw(struct _adapter *padapter)
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exit_fail:
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kfree(ptmpchar);
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firmware_rel:
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release_firmware((struct firmware *)phfwfile_hdl);
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return ret;
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}
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@ -31,6 +31,7 @@
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/kthread.h>
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#include <linux/firmware.h>
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#include "osdep_service.h"
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#include "drv_types.h"
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#include "xmit_osdep.h"
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@ -264,12 +265,12 @@ static void start_drv_timers(struct _adapter *padapter)
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void r8712_stop_drv_timers(struct _adapter *padapter)
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{
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_cancel_timer_ex(&padapter->mlmepriv.assoc_timer);
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_cancel_timer_ex(&padapter->mlmepriv.sitesurveyctrl.
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sitesurvey_ctrl_timer);
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_cancel_timer_ex(&padapter->securitypriv.tkip_timer);
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_cancel_timer_ex(&padapter->mlmepriv.scan_to_timer);
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_cancel_timer_ex(&padapter->mlmepriv.dhcp_timer);
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_cancel_timer_ex(&padapter->mlmepriv.wdg_timer);
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_cancel_timer_ex(&padapter->mlmepriv.sitesurveyctrl.
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sitesurvey_ctrl_timer);
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}
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static u8 init_default_value(struct _adapter *padapter)
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@ -347,7 +348,8 @@ u8 r8712_free_drv_sw(struct _adapter *padapter)
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r8712_free_mlme_priv(&padapter->mlmepriv);
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r8712_free_io_queue(padapter);
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_free_xmit_priv(&padapter->xmitpriv);
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_r8712_free_sta_priv(&padapter->stapriv);
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if (padapter->fw_found)
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_r8712_free_sta_priv(&padapter->stapriv);
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_r8712_free_recv_priv(&padapter->recvpriv);
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mp871xdeinit(padapter);
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if (pnetdev)
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@ -388,6 +390,7 @@ static int netdev_open(struct net_device *pnetdev)
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{
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struct _adapter *padapter = (struct _adapter *)netdev_priv(pnetdev);
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mutex_lock(&padapter->mutex_start);
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if (padapter->bup == false) {
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padapter->bDriverStopped = false;
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padapter->bSurpriseRemoved = false;
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@ -435,11 +438,13 @@ static int netdev_open(struct net_device *pnetdev)
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/* start driver mlme relation timer */
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start_drv_timers(padapter);
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padapter->ledpriv.LedControlHandler(padapter, LED_CTL_NO_LINK);
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mutex_unlock(&padapter->mutex_start);
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return 0;
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netdev_open_error:
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padapter->bup = false;
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netif_carrier_off(pnetdev);
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netif_stop_queue(pnetdev);
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mutex_unlock(&padapter->mutex_start);
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return -1;
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}
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@ -473,6 +478,9 @@ static int netdev_close(struct net_device *pnetdev)
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r8712_free_network_queue(padapter);
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/* The interface is no longer Up: */
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padapter->bup = false;
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release_firmware(padapter->fw);
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/* never exit with a firmware callback pending */
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wait_for_completion(&padapter->rtl8712_fw_ready);
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return 0;
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}
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@ -145,5 +145,6 @@ struct hal_priv {
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};
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uint rtl8712_hal_init(struct _adapter *padapter);
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int rtl871x_load_fw(struct _adapter *padapter);
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#endif
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@ -390,6 +390,7 @@ static int r871xu_drv_init(struct usb_interface *pusb_intf,
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pdvobjpriv = &padapter->dvobjpriv;
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pdvobjpriv->padapter = padapter;
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padapter->dvobjpriv.pusbdev = udev;
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padapter->pusb_intf = pusb_intf;
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usb_set_intfdata(pusb_intf, pnetdev);
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SET_NETDEV_DEV(pnetdev, &pusb_intf->dev);
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/* step 2. */
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@ -596,10 +597,11 @@ static int r871xu_drv_init(struct usb_interface *pusb_intf,
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"%pM\n", mac);
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memcpy(pnetdev->dev_addr, mac, ETH_ALEN);
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}
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/* step 6. Tell the network stack we exist */
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if (register_netdev(pnetdev) != 0)
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/* step 6. Load the firmware asynchronously */
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if (rtl871x_load_fw(padapter))
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goto error;
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spin_lock_init(&padapter->lockRxFF0Filter);
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mutex_init(&padapter->mutex_start);
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return 0;
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error:
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usb_put_dev(udev);
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@ -630,7 +632,8 @@ static void r871xu_dev_remove(struct usb_interface *pusb_intf)
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flush_scheduled_work();
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udelay(1);
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/*Stop driver mlme relation timer */
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r8712_stop_drv_timers(padapter);
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if (padapter->fw_found)
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r8712_stop_drv_timers(padapter);
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r871x_dev_unload(padapter);
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r8712_free_drv_sw(padapter);
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}
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