[PATCH v3 RESEND 0/3] Bluetooth: btmtk: fix ISO data reception

[Luiz Augusto von Dentz]

Hi Chris,

On Wed, Oct 21, 2026 at 4:43 AM Chris Lu <chris.lu at mediatek.com> wrote:
>
> Resend due to rebase: the base this series was previously posted against
> no longer exists in bluetooth-next's history, which is why it failed to
> apply. Rebased onto current bluetooth-next; no content changes from v3.
>
> Two fixes for btmtk_recv_isopkt(), found while debugging LE Audio on
> MT7925, plus an update to the ISO data transmission setting. The function
> is shared by every MediaTek USB controller that supports ISO data, so none
> of this is specific to that part.
>
> Patch 1 drops the zero padding that the ISO interrupt IN endpoint appends
> to each transfer instead of parsing it as ISO packets.
>
> Patch 2 bounds Data_Total_Length by hdev->iso_mtu.
>
> Patch 3 updates the mt79xx ISO data transmission setting.
>
> The three hunks do not overlap, so any prefix of the series applies on its
> own.
>
> Changes in v3 RESEND:
> - Resend due to rebase. No content changes.
>
> Changes in v3:
> - Patch 1: instead of dropping a packet solely because Data_Total_Length
>   is zero, also confirm that the rest of the transfer is zero-filled
>   before treating it as padding.
> - Patch 2, 3: unchanged.
>
> Changes in v2:
> - Patch 2 reworked and retitled.
> - Patch 3 added.
>
> Based on bluetooth-next.
>
> Chris Lu (3):
>   Bluetooth: btmtk: drop zero-length ISO packets from endpoint padding
>   Bluetooth: btmtk: bound the ISO payload length by the controller's MTU
>   Bluetooth: btmtk: derive the firmware ISO setting from
>     MTK_ISO_THRESHOLD
>
>  drivers/bluetooth/btmtk.c | 44 ++++++++++++++++++++++++++++++++++-----
>  1 file changed, 39 insertions(+), 5 deletions(-)
>
> --
> 2.45.2
>

Sashiko is still flagging a problem:

https://sashiko.dev/#/patchset/20261021084337.1515468-1-chris.lu%40mediatek.com

-- 
Luiz Augusto von Dentz