[PATCH net-next] net: mana: Reduce waiting time if HWC not responding
From: Haiyang Zhang <hidden>
Date: 2025-09-10 20:57:38
Also in:
linux-hyperv, lkml
Subsystem:
hyper-v/azure core and drivers, networking drivers, the rest · Maintainers:
"K. Y. Srinivasan", Haiyang Zhang, Wei Liu, Dexuan Cui, Long Li, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
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;
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2.34.1