For SD8688, FUNC_INIT command is queued before fw_ready flag is
set. This causes the following crash as lbs_thread blocks any
command if fw_ready is not set.
[ 209.338953] [<c0502248>] (__schedule+0x610/0x764) from [<bf20ae24>] (__lbs_cmd+0xb8/0x130 [libertas])
[ 209.348340] [<bf20ae24>] (__lbs_cmd+0xb8/0x130 [libertas]) from [<bf222474>] (if_sdio_finish_power_on+0xec/0x1b0 [libertas_sdio])
[ 209.360136] [<bf222474>] (if_sdio_finish_power_on+0xec/0x1b0 [libertas_sdio]) from [<bf2226c4>] (if_sdio_power_on+0x18c/0x20c [libertas_sdio])
[ 209.373052] [<bf2226c4>] (if_sdio_power_on+0x18c/0x20c [libertas_sdio]) from [<bf222944>] (if_sdio_probe+0x200/0x31c [libertas_sdio])
[ 209.385316] [<bf222944>] (if_sdio_probe+0x200/0x31c [libertas_sdio]) from [<bf01d820>] (sdio_bus_probe+0x94/0xfc [mmc_core])
[ 209.396748] [<bf01d820>] (sdio_bus_probe+0x94/0xfc [mmc_core]) from [<c02e729c>] (driver_probe_device+0x12c/0x348)
[ 209.407214] [<c02e729c>] (driver_probe_device+0x12c/0x348) from [<c02e7530>] (__driver_attach+0x78/0x9c)
[ 209.416798] [<c02e7530>] (__driver_attach+0x78/0x9c) from [<c02e5658>] (bus_for_each_dev+0x50/0x88)
[ 209.425946] [<c02e5658>] (bus_for_each_dev+0x50/0x88) from [<c02e6810>] (bus_add_driver+0x108/0x268)
[ 209.435180] [<c02e6810>] (bus_add_driver+0x108/0x268) from [<c02e782c>] (driver_register+0xa4/0x134)
[ 209.444426] [<c02e782c>] (driver_register+0xa4/0x134) from [<bf22601c>] (if_sdio_init_module+0x1c/0x3c [libertas_sdio])
[ 209.455339] [<bf22601c>] (if_sdio_init_module+0x1c/0x3c [libertas_sdio]) from [<c00085b8>] (do_one_initcall+0x98/0x174)
[ 209.466236] [<c00085b8>] (do_one_initcall+0x98/0x174) from [<c0076504>] (load_module+0x1c5c/0x1f80)
[ 209.475390] [<c0076504>] (load_module+0x1c5c/0x1f80) from [<c007692c>] (sys_init_module+0x104/0x128)
[ 209.484632] [<c007692c>] (sys_init_module+0x104/0x128) from [<c0008c40>] (ret_fast_syscall+0x0/0x38)
Fix it by setting fw_ready flag prior to queuing FUNC_INIT command.
Cc: <[email protected]> # 3.5+
Reported-by: Lubomir Rintel <[email protected]>
Tested-by: Lubomir Rintel <[email protected]>
Signed-off-by: Bing Zhao <[email protected]>
---
drivers/net/wireless/libertas/if_sdio.c | 6 +++++-
1 files changed, 5 insertions(+), 1 deletions(-)
diff --git a/drivers/net/wireless/libertas/if_sdio.c b/drivers/net/wireless/libertas/if_sdio.c
index 739309e..4557833 100644
--- a/drivers/net/wireless/libertas/if_sdio.c
+++ b/drivers/net/wireless/libertas/if_sdio.c
@@ -825,6 +825,11 @@ static void if_sdio_finish_power_on(struct if_sdio_card *card)
sdio_release_host(func);
+ /* Set fw_ready before queuing any commands so that
+ * lbs_thread won't block from sending them to firmware.
+ */
+ priv->fw_ready = 1;
+
/*
* FUNC_INIT is required for SD8688 WLAN/BT multiple functions
*/
@@ -839,7 +844,6 @@ static void if_sdio_finish_power_on(struct if_sdio_card *card)
netdev_alert(priv->dev, "CMD_FUNC_INIT cmd failed\n");
}
- priv->fw_ready = 1;
wake_up(&card->pwron_waitq);
if (!card->started) {
--
1.7.0.2
On Wed, Feb 27, 2013 at 11:46 AM, Dan Williams <[email protected]> wrote:
> On Tue, 2013-02-26 at 12:58 -0800, Bing Zhao wrote:
>> For SD8688, FUNC_INIT command is queued before fw_ready flag is
>> set. This causes the following crash as lbs_thread blocks any
>> command if fw_ready is not set.
>
> While we're at this; does somebody want to take over Libertas
> maintainership? I don't have time for it anymore (and truth be told,
> haven't for a long time). So I'm happy if Daniel or Bing or anyone else
> who are already doing all this take it over. I've got a few Libertas
> devices (usb8388, sd8686, sd8687, cf8385) that I'm happy to send to
> anyone who wants them.
>
> I'll ack a patch to MAINTAINERS to switch to somebody else.
>
It would be great to send out a separate mail for this concern?
- Sedat -
> Dan
>
>> [ 209.338953] [<c0502248>] (__schedule+0x610/0x764) from [<bf20ae24>] (__lbs_cmd+0xb8/0x130 [libertas])
>> [ 209.348340] [<bf20ae24>] (__lbs_cmd+0xb8/0x130 [libertas]) from [<bf222474>] (if_sdio_finish_power_on+0xec/0x1b0 [libertas_sdio])
>> [ 209.360136] [<bf222474>] (if_sdio_finish_power_on+0xec/0x1b0 [libertas_sdio]) from [<bf2226c4>] (if_sdio_power_on+0x18c/0x20c [libertas_sdio])
>> [ 209.373052] [<bf2226c4>] (if_sdio_power_on+0x18c/0x20c [libertas_sdio]) from [<bf222944>] (if_sdio_probe+0x200/0x31c [libertas_sdio])
>> [ 209.385316] [<bf222944>] (if_sdio_probe+0x200/0x31c [libertas_sdio]) from [<bf01d820>] (sdio_bus_probe+0x94/0xfc [mmc_core])
>> [ 209.396748] [<bf01d820>] (sdio_bus_probe+0x94/0xfc [mmc_core]) from [<c02e729c>] (driver_probe_device+0x12c/0x348)
>> [ 209.407214] [<c02e729c>] (driver_probe_device+0x12c/0x348) from [<c02e7530>] (__driver_attach+0x78/0x9c)
>> [ 209.416798] [<c02e7530>] (__driver_attach+0x78/0x9c) from [<c02e5658>] (bus_for_each_dev+0x50/0x88)
>> [ 209.425946] [<c02e5658>] (bus_for_each_dev+0x50/0x88) from [<c02e6810>] (bus_add_driver+0x108/0x268)
>> [ 209.435180] [<c02e6810>] (bus_add_driver+0x108/0x268) from [<c02e782c>] (driver_register+0xa4/0x134)
>> [ 209.444426] [<c02e782c>] (driver_register+0xa4/0x134) from [<bf22601c>] (if_sdio_init_module+0x1c/0x3c [libertas_sdio])
>> [ 209.455339] [<bf22601c>] (if_sdio_init_module+0x1c/0x3c [libertas_sdio]) from [<c00085b8>] (do_one_initcall+0x98/0x174)
>> [ 209.466236] [<c00085b8>] (do_one_initcall+0x98/0x174) from [<c0076504>] (load_module+0x1c5c/0x1f80)
>> [ 209.475390] [<c0076504>] (load_module+0x1c5c/0x1f80) from [<c007692c>] (sys_init_module+0x104/0x128)
>> [ 209.484632] [<c007692c>] (sys_init_module+0x104/0x128) from [<c0008c40>] (ret_fast_syscall+0x0/0x38)
>>
>> Fix it by setting fw_ready flag prior to queuing FUNC_INIT command.
>>
>> Cc: <[email protected]> # 3.5+
>> Reported-by: Lubomir Rintel <[email protected]>
>> Tested-by: Lubomir Rintel <[email protected]>
>> Signed-off-by: Bing Zhao <[email protected]>
>> ---
>> drivers/net/wireless/libertas/if_sdio.c | 6 +++++-
>> 1 files changed, 5 insertions(+), 1 deletions(-)
>>
>> diff --git a/drivers/net/wireless/libertas/if_sdio.c b/drivers/net/wireless/libertas/if_sdio.c
>> index 739309e..4557833 100644
>> --- a/drivers/net/wireless/libertas/if_sdio.c
>> +++ b/drivers/net/wireless/libertas/if_sdio.c
>> @@ -825,6 +825,11 @@ static void if_sdio_finish_power_on(struct if_sdio_card *card)
>>
>> sdio_release_host(func);
>>
>> + /* Set fw_ready before queuing any commands so that
>> + * lbs_thread won't block from sending them to firmware.
>> + */
>> + priv->fw_ready = 1;
>> +
>> /*
>> * FUNC_INIT is required for SD8688 WLAN/BT multiple functions
>> */
>> @@ -839,7 +844,6 @@ static void if_sdio_finish_power_on(struct if_sdio_card *card)
>> netdev_alert(priv->dev, "CMD_FUNC_INIT cmd failed\n");
>> }
>>
>> - priv->fw_ready = 1;
>> wake_up(&card->pwron_waitq);
>>
>> if (!card->started) {
>
>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-wireless" in
> the body of a message to [email protected]
> More majordomo info at http://vger.kernel.org/majordomo-info.html
On Tue, 2013-02-26 at 12:58 -0800, Bing Zhao wrote:
> For SD8688, FUNC_INIT command is queued before fw_ready flag is
> set. This causes the following crash as lbs_thread blocks any
> command if fw_ready is not set.
While we're at this; does somebody want to take over Libertas
maintainership? I don't have time for it anymore (and truth be told,
haven't for a long time). So I'm happy if Daniel or Bing or anyone else
who are already doing all this take it over. I've got a few Libertas
devices (usb8388, sd8686, sd8687, cf8385) that I'm happy to send to
anyone who wants them.
I'll ack a patch to MAINTAINERS to switch to somebody else.
Dan
> [ 209.338953] [<c0502248>] (__schedule+0x610/0x764) from [<bf20ae24>] (__lbs_cmd+0xb8/0x130 [libertas])
> [ 209.348340] [<bf20ae24>] (__lbs_cmd+0xb8/0x130 [libertas]) from [<bf222474>] (if_sdio_finish_power_on+0xec/0x1b0 [libertas_sdio])
> [ 209.360136] [<bf222474>] (if_sdio_finish_power_on+0xec/0x1b0 [libertas_sdio]) from [<bf2226c4>] (if_sdio_power_on+0x18c/0x20c [libertas_sdio])
> [ 209.373052] [<bf2226c4>] (if_sdio_power_on+0x18c/0x20c [libertas_sdio]) from [<bf222944>] (if_sdio_probe+0x200/0x31c [libertas_sdio])
> [ 209.385316] [<bf222944>] (if_sdio_probe+0x200/0x31c [libertas_sdio]) from [<bf01d820>] (sdio_bus_probe+0x94/0xfc [mmc_core])
> [ 209.396748] [<bf01d820>] (sdio_bus_probe+0x94/0xfc [mmc_core]) from [<c02e729c>] (driver_probe_device+0x12c/0x348)
> [ 209.407214] [<c02e729c>] (driver_probe_device+0x12c/0x348) from [<c02e7530>] (__driver_attach+0x78/0x9c)
> [ 209.416798] [<c02e7530>] (__driver_attach+0x78/0x9c) from [<c02e5658>] (bus_for_each_dev+0x50/0x88)
> [ 209.425946] [<c02e5658>] (bus_for_each_dev+0x50/0x88) from [<c02e6810>] (bus_add_driver+0x108/0x268)
> [ 209.435180] [<c02e6810>] (bus_add_driver+0x108/0x268) from [<c02e782c>] (driver_register+0xa4/0x134)
> [ 209.444426] [<c02e782c>] (driver_register+0xa4/0x134) from [<bf22601c>] (if_sdio_init_module+0x1c/0x3c [libertas_sdio])
> [ 209.455339] [<bf22601c>] (if_sdio_init_module+0x1c/0x3c [libertas_sdio]) from [<c00085b8>] (do_one_initcall+0x98/0x174)
> [ 209.466236] [<c00085b8>] (do_one_initcall+0x98/0x174) from [<c0076504>] (load_module+0x1c5c/0x1f80)
> [ 209.475390] [<c0076504>] (load_module+0x1c5c/0x1f80) from [<c007692c>] (sys_init_module+0x104/0x128)
> [ 209.484632] [<c007692c>] (sys_init_module+0x104/0x128) from [<c0008c40>] (ret_fast_syscall+0x0/0x38)
>
> Fix it by setting fw_ready flag prior to queuing FUNC_INIT command.
>
> Cc: <[email protected]> # 3.5+
> Reported-by: Lubomir Rintel <[email protected]>
> Tested-by: Lubomir Rintel <[email protected]>
> Signed-off-by: Bing Zhao <[email protected]>
> ---
> drivers/net/wireless/libertas/if_sdio.c | 6 +++++-
> 1 files changed, 5 insertions(+), 1 deletions(-)
>
> diff --git a/drivers/net/wireless/libertas/if_sdio.c b/drivers/net/wireless/libertas/if_sdio.c
> index 739309e..4557833 100644
> --- a/drivers/net/wireless/libertas/if_sdio.c
> +++ b/drivers/net/wireless/libertas/if_sdio.c
> @@ -825,6 +825,11 @@ static void if_sdio_finish_power_on(struct if_sdio_card *card)
>
> sdio_release_host(func);
>
> + /* Set fw_ready before queuing any commands so that
> + * lbs_thread won't block from sending them to firmware.
> + */
> + priv->fw_ready = 1;
> +
> /*
> * FUNC_INIT is required for SD8688 WLAN/BT multiple functions
> */
> @@ -839,7 +844,6 @@ static void if_sdio_finish_power_on(struct if_sdio_card *card)
> netdev_alert(priv->dev, "CMD_FUNC_INIT cmd failed\n");
> }
>
> - priv->fw_ready = 1;
> wake_up(&card->pwron_waitq);
>
> if (!card->started) {