| Message ID | 20200504233003.16670-3-elder@linaro.org |
|---|---|
| State | New |
| Headers | show |
| Series | net: ipa: limit special reset handling | expand |
diff --git a/drivers/net/ipa/gsi.c b/drivers/net/ipa/gsi.c index cd5d8045c7e5..8ccbbb920c11 100644 --- a/drivers/net/ipa/gsi.c +++ b/drivers/net/ipa/gsi.c @@ -840,9 +840,9 @@ void gsi_channel_reset(struct gsi *gsi, u32 channel_id, bool legacy) mutex_lock(&gsi->mutex); - /* Due to a hardware quirk we need to reset RX channels twice. */ gsi_channel_reset_command(channel); - if (!channel->toward_ipa) + /* Due to a hardware quirk we may need to reset RX channels twice. */ + if (legacy && !channel->toward_ipa) gsi_channel_reset_command(channel); gsi_channel_program(channel, legacy);
In gsi_channel_reset(), RX channels are subjected to two consecutive CHANNEL_RESET commands. This workaround should only be used for IPA version 3.5.1, and for newer hardware "can lead to unwanted behavior." Only issue the second CHANNEL_RESET command for legacy hardware. Signed-off-by: Alex Elder <elder@linaro.org> --- drivers/net/ipa/gsi.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)