From: Haiyang Zhang <haiyangz@linux.microsoft.com>
To: linux-hyperv@vger.kernel.org, netdev@vger.kernel.org
Cc: haiyangz@microsoft.com, decui@microsoft.com, kys@microsoft.com,
wei.liu@kernel.org, edumazet@google.com, davem@davemloft.net,
kuba@kernel.org, pabeni@redhat.com, longli@microsoft.com,
ssengar@linux.microsoft.com, ernis@linux.microsoft.com,
dipayanroy@linux.microsoft.com, kotaranov@microsoft.com,
shirazsaleem@microsoft.com, andrew+netdev@lunn.ch,
linux-kernel@vger.kernel.org
Subject: [PATCH net-next] net: mana: Reduce waiting time if HWC not responding
Date: Wed, 10 Sep 2025 13:57:21 -0700 [thread overview]
Message-ID: <1757537841-5063-1-git-send-email-haiyangz@linux.microsoft.com> (raw)
From: Haiyang Zhang <haiyangz@microsoft.com>
If HW Channel (HWC) is not responding, reduce the waiting time, so further
steps will fail quickly.
This will prevent getting stuck for a long time (30 minutes or more), for
example, during unloading while HWC is not responding.
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
---
drivers/net/ethernet/microsoft/mana/hw_channel.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/microsoft/mana/hw_channel.c b/drivers/net/ethernet/microsoft/mana/hw_channel.c
index ef072e24c46d..ada6c78a2bef 100644
--- a/drivers/net/ethernet/microsoft/mana/hw_channel.c
+++ b/drivers/net/ethernet/microsoft/mana/hw_channel.c
@@ -881,7 +881,12 @@ int mana_hwc_send_request(struct hw_channel_context *hwc, u32 req_len,
if (!wait_for_completion_timeout(&ctx->comp_event,
(msecs_to_jiffies(hwc->hwc_timeout)))) {
if (hwc->hwc_timeout != 0)
- dev_err(hwc->dev, "HWC: Request timed out!\n");
+ dev_err(hwc->dev, "HWC: Request timed out: %u ms\n",
+ hwc->hwc_timeout);
+
+ /* Reduce further waiting if HWC no response */
+ if (hwc->hwc_timeout > 1)
+ hwc->hwc_timeout = 1;
err = -ETIMEDOUT;
goto out;
--
2.34.1
next reply other threads:[~2025-09-10 20:57 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-10 20:57 Haiyang Zhang [this message]
2025-09-12 12:28 ` [PATCH net-next] net: mana: Reduce waiting time if HWC not responding Simon Horman
2025-09-12 17:48 ` [EXTERNAL] " Haiyang Zhang
2025-09-14 19:00 ` patchwork-bot+netdevbpf
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