can: m_can: tcan4x5x m_can_isr do not handle tx if rx fails

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To: linux-can@xxxxxxxxxxxxxxx
Subject: can: m_can: tcan4x5x m_can_isr do not handle tx if rx fails
From: Michael Anochin <anochin@xxxxxxxxxxxxxxx>
Date: Tue, 22 Feb 2022 12:14:23 +0100
Organization: Czibula und Grundmann GmbH
Reply-to: anochin@xxxxxxxxxxxxxxx
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In the context of the ENOBUFS problem by using can interfaces underhigher load:

In m_can_isr handler, if rx fails (m_can_rx_peripheral), then nonetif_wake_queue(dev) will be called. Can this lead to ENOBUFS?

Follow-Ups:
- Re: can: m_can: tcan4x5x m_can_isr do not handle tx if rx fails
  - From: Marc Kleine-Budde

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