diff options
| author | Alex Elder <elder@linaro.org> | 2021-02-01 20:28:45 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2021-02-03 04:42:35 +0300 |
| commit | 697e834e143afa733913fe2c9bc06b5e4d139c66 (patch) | |
| tree | 4e7b82de2b2f283607f10e581da1bac014d01a48 /drivers/net/ipa | |
| parent | 6b00a76a1db6e8898b5f09e0f09ed129ce870ce3 (diff) | |
| download | linux-697e834e143afa733913fe2c9bc06b5e4d139c66.tar.xz | |
net: ipa: introduce gsi_channel_stop_retry()
Create a new helper function that encapsulates issuing a set of
channel stop commands, retrying if appropriate, with a short delay
between attempts.
Signed-off-by: Alex Elder <elder@linaro.org>
Acked-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/net/ipa')
| -rw-r--r-- | drivers/net/ipa/gsi.c | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/drivers/net/ipa/gsi.c b/drivers/net/ipa/gsi.c index 1df7775a9bee..1d89ea6b9fe7 100644 --- a/drivers/net/ipa/gsi.c +++ b/drivers/net/ipa/gsi.c @@ -892,15 +892,12 @@ int gsi_channel_start(struct gsi *gsi, u32 channel_id) return ret; } -/* Stop a started channel */ -int gsi_channel_stop(struct gsi *gsi, u32 channel_id) +static int gsi_channel_stop_retry(struct gsi_channel *channel) { - struct gsi_channel *channel = &gsi->channel[channel_id]; u32 retries = GSI_CHANNEL_STOP_RETRIES; + struct gsi *gsi = channel->gsi; int ret; - gsi_channel_freeze(channel); - mutex_lock(&gsi->mutex); do { @@ -912,6 +909,19 @@ int gsi_channel_stop(struct gsi *gsi, u32 channel_id) mutex_unlock(&gsi->mutex); + return ret; +} + +/* Stop a started channel */ +int gsi_channel_stop(struct gsi *gsi, u32 channel_id) +{ + struct gsi_channel *channel = &gsi->channel[channel_id]; + int ret; + + gsi_channel_freeze(channel); + + ret = gsi_channel_stop_retry(channel); + /* Re-thaw the channel if an error occurred while stopping */ if (ret) gsi_channel_thaw(channel); |