diff options
| author | Alex Elder <elder@linaro.org> | 2021-08-03 09:00:59 -0500 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-08-04 10:12:05 +0100 |
| commit | 4a4ba483e4a56cb469f067493265f0173e06d060 (patch) | |
| tree | dc716c550899d3139c87d0cc9d10d0b057c1aef8 /drivers/net/ipa | |
| parent | decfef0fa6b21508657a6e54a01508196988bc95 (diff) | |
| download | linux-4a4ba483e4a56cb469f067493265f0173e06d060.tar.bz2 | |
net: ipa: move version check for channel suspend/resume
Change the Boolean flags passed to __gsi_channel_start() and
__gsi_channel_stop() so they represent whether the request is being
made to implement suspend (versus stop) or resume (versus start).
Then stop or start the channel for suspend/resume requests only if
the hardware version indicates it should be done.
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ipa')
| -rw-r--r-- | drivers/net/ipa/gsi.c | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/drivers/net/ipa/gsi.c b/drivers/net/ipa/gsi.c index e143deddb7c0..5c5a2571d2fa 100644 --- a/drivers/net/ipa/gsi.c +++ b/drivers/net/ipa/gsi.c @@ -920,12 +920,13 @@ static void gsi_channel_program(struct gsi_channel *channel, bool doorbell) /* All done! */ } -static int __gsi_channel_start(struct gsi_channel *channel, bool start) +static int __gsi_channel_start(struct gsi_channel *channel, bool resume) { struct gsi *gsi = channel->gsi; int ret; - if (!start) + /* Prior to IPA v4.0 suspend/resume is not implemented by GSI */ + if (resume && gsi->version < IPA_VERSION_4_0) return 0; mutex_lock(&gsi->mutex); @@ -947,7 +948,7 @@ int gsi_channel_start(struct gsi *gsi, u32 channel_id) napi_enable(&channel->napi); gsi_irq_ieob_enable_one(gsi, channel->evt_ring_id); - ret = __gsi_channel_start(channel, true); + ret = __gsi_channel_start(channel, false); if (ret) { gsi_irq_ieob_disable_one(gsi, channel->evt_ring_id); napi_disable(&channel->napi); @@ -971,7 +972,7 @@ static int gsi_channel_stop_retry(struct gsi_channel *channel) return ret; } -static int __gsi_channel_stop(struct gsi_channel *channel, bool stop) +static int __gsi_channel_stop(struct gsi_channel *channel, bool suspend) { struct gsi *gsi = channel->gsi; int ret; @@ -979,7 +980,8 @@ static int __gsi_channel_stop(struct gsi_channel *channel, bool stop) /* Wait for any underway transactions to complete before stopping. */ gsi_channel_trans_quiesce(channel); - if (!stop) + /* Prior to IPA v4.0 suspend/resume is not implemented by GSI */ + if (suspend && gsi->version < IPA_VERSION_4_0) return 0; mutex_lock(&gsi->mutex); @@ -997,7 +999,7 @@ int gsi_channel_stop(struct gsi *gsi, u32 channel_id) struct gsi_channel *channel = &gsi->channel[channel_id]; int ret; - ret = __gsi_channel_stop(channel, true); + ret = __gsi_channel_stop(channel, false); if (ret) return ret; @@ -1032,8 +1034,7 @@ int gsi_channel_suspend(struct gsi *gsi, u32 channel_id) struct gsi_channel *channel = &gsi->channel[channel_id]; int ret; - /* Prior to IPA v4.0 suspend/resume is not implemented by GSI */ - ret = __gsi_channel_stop(channel, gsi->version >= IPA_VERSION_4_0); + ret = __gsi_channel_stop(channel, true); if (ret) return ret; @@ -1048,8 +1049,7 @@ int gsi_channel_resume(struct gsi *gsi, u32 channel_id) { struct gsi_channel *channel = &gsi->channel[channel_id]; - /* Prior to IPA v4.0 suspend/resume is not implemented by GSI */ - return __gsi_channel_start(channel, gsi->version >= IPA_VERSION_4_0); + return __gsi_channel_start(channel, true); } /** |