From: Alex Elder <elder@linaro.org>
Date: Wed, 13 Jan 2021 17:15:31 +0000 (-0600)
Subject: net: ipa: change stop channel retry delay
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=3d60e15f6ead2f4a56903a8c737e7f522c867827;p=linux.git

net: ipa: change stop channel retry delay

If a GSI stop channel command leaves the channel in STOP_IN_PROC
state, we retry the stop command after a 1-2 millisecond delay.

I have been told that a 3-5 millisecond delay is a better choice.

Signed-off-by: Alex Elder <elder@linaro.org>
Reviewed-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---

diff --git a/drivers/net/ipa/gsi.c b/drivers/net/ipa/gsi.c
index 4de769166978b..5c163f9c0ea7b 100644
--- a/drivers/net/ipa/gsi.c
+++ b/drivers/net/ipa/gsi.c
@@ -903,7 +903,7 @@ int gsi_channel_stop(struct gsi *gsi, u32 channel_id)
 		ret = gsi_channel_stop_command(channel);
 		if (ret != -EAGAIN)
 			break;
-		usleep_range(USEC_PER_MSEC, 2 * USEC_PER_MSEC);
+		usleep_range(3 * USEC_PER_MSEC, 5 * USEC_PER_MSEC);
 	} while (retries--);
 
 	mutex_unlock(&gsi->mutex);