gve: fix probe failure if clock read fails

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If timestamping is supported, GVE reads the clock during probe,
which can fail for various reasons. Previously, this failure would
abort the driver probe, rendering the device unusable. This behavior
has been observed on production GCP VMs, causing driver initialization
to fail completely.

This patch allows the driver to degrade gracefully. If gve_init_clock()
fails, it logs a warning and continues loading the driver without PTP
support.

Cc: stable@vger.kernel.org
Fixes: a479a27f4d ("gve: Move gve_init_clock to after AQ CONFIGURE_DEVICE_RESOURCES call")
Signed-off-by: Jordan Rhee <jordanrhee@google.com>
Reviewed-by: Shachar Raindel <shacharr@google.com>
Signed-off-by: Harshitha Ramamurthy <hramamurthy@google.com>
Link: https://patch.msgid.link/20260127010210.969823-1-hramamurthy@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

...

This commit is contained in:

Jordan Rhee 2026-01-27 01:02:10 +00:00 • committed by Jakub Kicinski

parent d32ba904a4

commit a040afa3bc

5 changed files with 14 additions and 15 deletions

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5

drivers/net/ethernet/google/gve/gve.h

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2

drivers/net/ethernet/google/gve/gve_ethtool.c

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12

drivers/net/ethernet/google/gve/gve_main.c

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8

drivers/net/ethernet/google/gve/gve_ptp.c

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2

drivers/net/ethernet/google/gve/gve_rx_dqo.c

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