I add printk() in following and device_id is correct 0x9271 but becomes 0x0 in ath9k_hw_init(ah). see log right after two functions.
static int ath_init_htc_priv(u16 devid, struct ath_htc_priv *priv)
{
.......................
ath_print(common, ATH_DBG_CONFIG, "HW about to be initialized...\n");
printk("%s ah->hw_version.devid = %x,ah->ptr = %p\n", __FUNCTION__, ah->hw_version.devid, ah);
r = ath9k_hw_init(ah);
if (r)
goto failed_hw_init;
..........
}
int ath9k_hw_init(struct ath_hw *ah)
{
struct ath_common *common = ath9k_hw_common(ah);
int r = 0;
printk("%s ah->hw_version.devid = %x,ah->ptr = %p\n", __FUNCTION__, ah->hw_version.devid, ah);
if (!ath9k_hw_devid_supported(ah->hw_version.devid)) {
ath_print(common, ATH_DBG_FATAL,
"Unsupported device ID: 0x%0x\n",
ah->hw_version.devid);
return -EOPNOTSUPP;
}
..........
}
[ 13.862493] ath_htc_hw_probe target->device_id = 9271
[ 13.862497] probe_htc_9k_device device_id = 9271
[ 13.862598] usb 1-3: link qh0-00ff/f6af2480 start 0 [2/0 us]
[ 13.863571] usb 1-3: HTC epid 1 upstream 6 downstream 3 :: WMI control service
[ 13.863576] usb 1-3: unlink qh0-00ff/f6af2480 start 0 [2/0 us]
[ 13.863670] usb 1-3: link qh0-00ff/f6af2480 start 0 [2/0 us]
[ 13.864581] usb 1-3: HTC epid 2 upstream 5 downstream 2 :: WMI beacon service
[ 13.864587] usb 1-3: unlink qh0-00ff/f6af2480 start 0 [2/0 us]
[ 13.864679] usb 1-3: link qh0-00ff/f6af2480 start 0 [2/0 us]
[ 13.865602] usb 1-3: unlink qh0-00ff/f6af2480 start 0 [2/0 us]
[ 13.865616] usb 1-3: HTC epid 3 upstream 6 downstream 2 :: WMI management service
[ 13.865700] usb 1-3: link qh0-00ff/f6af2480 start 0 [2/0 us]
[ 13.866600] usb 1-3: unlink qh0-00ff/f6af2480 start 0 [2/0 us]
[ 13.866614] usb 1-3: HTC epid 4 upstream 1 downstream 2 :: WMI BE data service
[ 13.866698] usb 1-3: link qh0-00ff/f6af2480 start 0 [2/0 us]
[ 13.867601] usb 1-3: unlink qh0-00ff/f6af2480 start 0 [2/0 us]
[ 13.867614] usb 1-3: HTC epid 5 upstream 1 downstream 2 :: WMI BK data service
[ 13.867698] usb 1-3: link qh0-00ff/f6af2480 start 0 [2/0 us]
[ 13.868581] usb 1-3: unlink qh0-00ff/f6af2480 start 0 [2/0 us]
[ 13.868593] usb 1-3: HTC epid 6 upstream 6 downstream 2 :: WMI VI data service
[ 13.868677] usb 1-3: link qh0-00ff/f6af2480 start 0 [2/0 us]
[ 13.869581] usb 1-3: unlink qh0-00ff/f6af2480 start 0 [2/0 us]
[ 13.869595] usb 1-3: HTC epid 7 upstream 6 downstream 2 :: WMI VO data service
[ 13.869678] usb 1-3: link qh0-00ff/f6af2480 start 0 [2/0 us]
[ 13.870580] usb 1-3: unlink qh0-00ff/f6af2480 start 0 [2/0 us]
[ 13.870673] usb 1-3: link qh0-00ff/f6af2480 start 0 [2/0 us]
[ 13.871579] usb 1-3: unlink qh0-00ff/f6af2480 start 0 [2/0 us]
[ 13.871671] usb 1-3: link qh0-00ff/f6af2480 start 0 [2/0 us]
[ 13.872580] usb 1-3: unlink qh0-00ff/f6af2480 start 0 [2/0 us]
[ 13.872674] usb 1-3: link qh0-00ff/f6af2480 start 0 [2/0 us]
[ 13.873187] ath: HW about to be initialized...
[ 13.873191] ath_init_htc_priv ah->hw_version.devid = 9271,ah->ptr = f6428000
[ 13.873194] ath9k_hw_init ah->hw_version.devid = 0,ah->ptr = f6428000
[ 13.873197] ath: Unsupported device ID: 0
[ 13.873200] usb 1-3: failed to initialize device
[ 13.873209] usb 1-3: initializing 0x9271 device failed: -95
[ 13.873212] usb 1-3: hw probe failed
[ 13.873261] usb 1-3: unlink qh0-00ff/f6af2480 start 0 [2/0 us]
[ 13.873371] ath_hif_usb: probe of 1-3:1.0 failed with error -95
[ 13.873432] usbcore: registered new interface driver ath_hif_usb
[ 13.873655] modprobe used greatest stack depth: 5088 bytes left
--- On Fri, 11/13/09, Luis R. Rodriguez <mcgrof@xxxxxxxxx> wrote:
> From: Luis R. Rodriguez <mcgrof@xxxxxxxxx>
> Subject: Re: WN721N cannot be initialized
> To: "hong zhang" <henryzhang62@xxxxxxxxx>
> Cc: devel@xxxxxxxxxxxxxxxxxxxxxx, "Stephen Chen" <Stephen.Chen@xxxxxxxxxxx>
> Date: Friday, November 13, 2009, 4:05 PM
> On Thu, Nov 12, 2009 at 10:54 PM,
> hong zhang <henryzhang62@xxxxxxxxx>
> wrote:
> > List,
> >
> > I bought WN721N ar9721 but it could not be
> initialized. device_id is 9721
> > in function ath_init_htc_priv(). After ah passed to
> ath9k_hw_init(ah),
> >device_id becomes 0.
>
> The device ID on the ath_hw comes all the way from the usb
> device ID.
>
> This is initialized based on the value passed during
> probe:
>
> ah->hw_version.devid = devid;
>
> That is when probe_htc_9k_device() is called. This is the
> hw_probe
> callback for the 9k atheros hardware family. This gets
> called by the
> HTC driver during ath_htc_hw_probe() :
>
> int ath_htc_hw_probe(void *hif_handle, enum
> ath_hif_transports transport)
> {
> ...
> target->device_id =
> hif->ops->get_device_id(hif_handle);
> ...
> r =
> ath_htc_9k_hw_ops->hw_probe(target, target->dev,
> target->device_id);
> if (r) {
>
> dev_err(target->dev, "initializing 0x%0x device failed:
> %d\n",
>
> target->device_id, r);
>
> goto fail;
> }
> ...
> }
>
> The hif_handle is passed by HIF during probe, which is done
> in
> ath_hif_usb_probe():
>
> static int ath_hif_usb_probe(struct usb_interface
> *interface,
>
> const
> struct usb_device_id *id)
> {
> ....
>
> hif_dev->device_id = id->idProduct;
> ....
> /* Probe hardware now */
> r = ath_htc_hw_probe(hif_dev,
> ATH_HIF_USB);
> if (r) {
>
> dev_err(&hif_dev->udev->dev, "hw probe
> failed\n");
>
> goto fail;
> }
> ....
> }
>
> > Very strange. Does anyone have similar experience?
>
> Can you paste the output with debugging completely
> enabled?
>
> modprobe ath9k_htc debug=0xfffffff
>
> before plugging the device in. Also can you please boot
> with
> ignore_loglevel appended to your kernel boot paramters for
> grub.
>
> Luis
>
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