From: Alex Elder <elder@linaro.org>
To: davem@davemloft.net, kuba@kernel.org
Cc: elder@kernel.org, evgreen@chromium.org,
bjorn.andersson@linaro.org, cpratapa@codeaurora.org,
subashab@codeaurora.org, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [PATCH net-next 2/9] net: ipa: introduce gsi_channel_stop_retry()
Date: Fri, 29 Jan 2021 14:20:12 -0600 [thread overview]
Message-ID: <20210129202019.2099259-3-elder@linaro.org> (raw)
In-Reply-To: <20210129202019.2099259-1-elder@linaro.org>
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>
---
drivers/net/ipa/gsi.c | 20 +++++++++++++++-----
1 file changed, 15 insertions(+), 5 deletions(-)
diff --git a/drivers/net/ipa/gsi.c b/drivers/net/ipa/gsi.c
index 4a3e125e898f6..bd1bf388d9892 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);
--
2.27.0
next prev parent reply other threads:[~2021-01-29 20:28 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-29 20:20 [PATCH net-next 0/9] net: ipa: don't disable NAPI in suspend Alex Elder
2021-01-29 20:20 ` [PATCH net-next 1/9] net: ipa: don't thaw channel if error starting Alex Elder
2021-01-29 20:20 ` Alex Elder [this message]
2021-01-29 20:20 ` [PATCH net-next 3/9] net: ipa: introduce __gsi_channel_start() Alex Elder
2021-01-29 20:20 ` [PATCH net-next 4/9] net: ipa: kill gsi_channel_freeze() and gsi_channel_thaw() Alex Elder
2021-01-29 20:20 ` [PATCH net-next 5/9] net: ipa: disable IEOB interrupt after channel stop Alex Elder
2021-01-29 20:20 ` [PATCH net-next 6/9] net: ipa: move completion interrupt enable/disable Alex Elder
2021-01-29 20:20 ` [PATCH net-next 7/9] net: ipa: don't disable IEOB interrupt during suspend Alex Elder
2021-01-29 20:20 ` [PATCH net-next 8/9] net: ipa: expand last transaction check Alex Elder
2021-01-29 20:20 ` [PATCH net-next 9/9] net: ipa: don't disable NAPI in suspend Alex Elder
2021-01-30 15:25 ` Willem de Bruijn
2021-01-30 19:22 ` Jakub Kicinski
2021-01-31 4:30 ` Alex Elder
2021-01-31 4:29 ` Alex Elder
2021-01-31 14:52 ` Willem de Bruijn
2021-01-31 15:32 ` Alex Elder
2021-02-01 1:36 ` Willem de Bruijn
2021-02-01 14:35 ` Alex Elder
2021-02-01 14:47 ` Willem de Bruijn
2021-02-01 15:48 ` Alex Elder
2021-02-01 18:38 ` Alex Elder
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