diff options
| author | Jason Perlow <jperlow@gmail.com> | 2026-10-21 22:52:38 +0530 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2026-10-22 11:59:42 +0200 |
| commit | 7ed5dce55fa8393972b1bf2bf5af1c818c5e7dc2 (patch) | |
| tree | a10afac2478ad55610c0816ab1f93952894b8b50 /include | |
| parent | 35c5a5ea4418571997a7e7af3e7e8922b136f6e6 (diff) | |
wifi: brcmfmac: map msgbuf RX packet IDs bidirectional
Commit f0ba5fd51ff2 ("wifi: brcmfmac: Set DMA direction for msgbuf
packet IDs") maps the RX packet ID buffers DMA_FROM_DEVICE. The
BCM4364 firmware also reads posted RX buffers, so with VT-d
translation enabled every such read faults ("PTE Read access is not
set") and the firmware crashes and resets in a loop.
Map the RX pool DMA_BIDIRECTIONAL again, as before that commit. TX
keeps DMA_TO_DEVICE.
Fixes: f0ba5fd51ff2 ("wifi: brcmfmac: Set DMA direction for msgbuf packet IDs")
Cc: stable@vger.kernel.org
Signed-off-by: Jason Perlow <jperlow@gmail.com>
Signed-off-by: Aditya Garg <aditya.garg@linux.dev>
Acked-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Link: https://patch.msgid.link/20261021172238.10004-1-aditya.garg@linux.dev
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'include')
0 files changed, 0 insertions, 0 deletions