On Mon, Jan 24, 2022 at 02:10:42PM -0300, Fabio Estevam wrote:
[ Upstream commit 09b8cd69edcf2be04a781e1781e98e52a775c9ad ] On an imx6dl-pico-pi board with a QCA9377 SDIO chip, simply trying to connect via ssh to another machine causes:
[ 55.824159] ath10k_sdio mmc1:0001:1: failed to transmit packet, dropping: -12 [ 55.832169] ath10k_sdio mmc1:0001:1: failed to submit frame: -12 [ 55.838529] ath10k_sdio mmc1:0001:1: failed to push frame: -12 [ 55.905863] ath10k_sdio mmc1:0001:1: failed to transmit packet, dropping: -12 [ 55.913650] ath10k_sdio mmc1:0001:1: failed to submit frame: -12 [ 55.919887] ath10k_sdio mmc1:0001:1: failed to push frame: -12
, leading to an ssh connection failure.
One user inspected the size of frames on Wireshark and reported the followig:
"I was able to narrow the issue down to the mtu. If I set the mtu for the wlan0 device to 1486 instead of 1500, the issue does not happen.
The size of frames that I see on Wireshark is exactly 1500 after setting it to 1486."
Clearing the HI_ACS_FLAGS_ALT_DATA_CREDIT_SIZE avoids the problem and the ssh command works successfully after that.
Introduce a 'credit_size_workaround' field to ath10k_hw_params for the QCA9377 SDIO, so that the HI_ACS_FLAGS_ALT_DATA_CREDIT_SIZE is not set in this case.
Tested with QCA9377 SDIO with firmware WLAN.TF.1.1.1-00061-QCATFSWPZ-1.
Fixes: 2f918ea98606 ("ath10k: enable alt data of TX path for sdio") Signed-off-by: Fabio Estevam festevam@denx.de Signed-off-by: Kalle Valo quic_kvalo@quicinc.com Link: https://lore.kernel.org/r/20211124131047.713756-1-festevam@denx.de
Hi,
This is the resolution for the linux-stable 5.10 tree.
Changes since v2:
- Add the missing blank line in hw.h like done in the upstream version.
Changes since v1:
- Added the missing change in hw.h.
Ok, trying this again...