On Mon, Apr 29, 2024 at 10:10:40AM -0700, Tony Nguyen wrote:
> From: Vitaly Lifshits <vitaly.lifshits@xxxxxxxxx>
>
> This is a partial revert of commit 6dbdd4de0362 ("e1000e: Workaround
> for sporadic MDI error on Meteor Lake systems"). The referenced commit
> used usleep_range inside the PHY access routines, which are sometimes
> called from an atomic context. This can lead to a kernel panic in some
> scenarios, such as cable disconnection and reconnection on vPro systems.
>
> Solve this by changing the usleep_range calls back to udelay.
>
> Fixes: 6dbdd4de0362 ("e1000e: Workaround for sporadic MDI error on Meteor Lake systems")
> Cc: stable@xxxxxxxxxxxxxxx
> Reported-by: Jérôme Carretero <cJ@xxxxxxxxxxx>
> Closes: https://bugzilla.kernel.org/show_bug.cgi?id=218740
> Closes: https://lore.kernel.org/lkml/a7eb665c74b5efb5140e6979759ed243072cb24a.camel@xxxxxxxxxxx/
> Co-developed-by: Sasha Neftin <sasha.neftin@xxxxxxxxx>
> Signed-off-by: Sasha Neftin <sasha.neftin@xxxxxxxxx>
> Signed-off-by: Vitaly Lifshits <vitaly.lifshits@xxxxxxxxx>
> Tested-by: Dima Ruinskiy <dima.ruinskiy@xxxxxxxxx>
> Signed-off-by: Tony Nguyen <anthony.l.nguyen@xxxxxxxxx>
Reviewed-by: Simon Horman <horms@xxxxxxxxxx>
