USB devices rely on queuing functionality provided by the fwsignal
module regardless the mode fwsignal is operating in. For this some
data structure needs to be reserved which is tied to the interface,
which is done by brcmf_fws_add_interface(). However, it checks the
mode. Replace that by checking result from brcmf_fws_queue_skbs().
Fixes: fc0471e3e884 ("brcmfmac: ignore interfaces when fwsignal is disabled")
Reviewed-by: Franky Lin <[email protected]>
Signed-off-by: Arend van Spriel <[email protected]>
---
Hi Kalle,
This patch fixes a regression that was introduced upstream in
4.12-rc1. It applies to the master branch of the wireless-drivers
repository.
Regards,
Arend
---
drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwsignal.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwsignal.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwsignal.c
index 72373e5..f59642b 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwsignal.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwsignal.c
@@ -2145,7 +2145,7 @@ void brcmf_fws_add_interface(struct brcmf_if *ifp)
struct brcmf_fws_info *fws = drvr_to_fws(ifp->drvr);
struct brcmf_fws_mac_descriptor *entry;
- if (!ifp->ndev || fws->fcmode == BRCMF_FWS_FCMODE_NONE)
+ if (!ifp->ndev || !brcmf_fws_queue_skbs(fws))
return;
entry = &fws->desc.iface[ifp->ifidx];
--
1.9.1
Arend Van Spriel <[email protected]> wrote:
> USB devices rely on queuing functionality provided by the fwsignal
> module regardless the mode fwsignal is operating in. For this some
> data structure needs to be reserved which is tied to the interface,
> which is done by brcmf_fws_add_interface(). However, it checks the
> mode. Replace that by checking result from brcmf_fws_queue_skbs().
> Otherwise the driver will crash in a null pointer dereference when
> data is transmitted on the interface.
>
> Fixes: fc0471e3e884 ("brcmfmac: ignore interfaces when fwsignal is disabled")
> Reviewed-by: Franky Lin <[email protected]>
> Signed-off-by: Arend van Spriel <[email protected]>
Patch applied to wireless-drivers.git, thanks.
a2b7a622d629 brcmfmac: fix brcmf_fws_add_interface() for USB devices
--
https://patchwork.kernel.org/patch/9780809/
https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
On 13-06-17 08:13, Kalle Valo wrote:
> Arend Van Spriel <[email protected]> wrote:
>
>> USB devices rely on queuing functionality provided by the fwsignal
>> module regardless the mode fwsignal is operating in. For this some
>> data structure needs to be reserved which is tied to the interface,
>> which is done by brcmf_fws_add_interface(). However, it checks the
>> mode. Replace that by checking result from brcmf_fws_queue_skbs().
Ok. Please add:
"""
Otherwise the driver will crash in a null pointer dereference when data
is transmitted on the interface.
"""
Regards,
Arend
>> Fixes: fc0471e3e884 ("brcmfmac: ignore interfaces when fwsignal is disabled")
>> Reviewed-by: Franky Lin <[email protected]>
>> Signed-off-by: Arend van Spriel <[email protected]>
>
> Same here, a short description of the bug would be nice.
>
Arend Van Spriel <[email protected]> wrote:
> USB devices rely on queuing functionality provided by the fwsignal
> module regardless the mode fwsignal is operating in. For this some
> data structure needs to be reserved which is tied to the interface,
> which is done by brcmf_fws_add_interface(). However, it checks the
> mode. Replace that by checking result from brcmf_fws_queue_skbs().
>
> Fixes: fc0471e3e884 ("brcmfmac: ignore interfaces when fwsignal is disabled")
> Reviewed-by: Franky Lin <[email protected]>
> Signed-off-by: Arend van Spriel <[email protected]>
Same here, a short description of the bug would be nice.
--
https://patchwork.kernel.org/patch/9780809/
https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches