Re: [PATCH net v2] net: txgbe: fix MISC interrupt unmasking in non-MSI-X mode and device shutdown

Hello:

This patch was applied to netdev/net.git (main)
by Jakub Kicinski [off-list ref]:

On Tue, 18 Aug 2026 10:30:26 +0800 you wrote:

In txgbe_misc_irq_thread_fn(), the driver unmasks the miscellaneous
interrupt at the end of the handler using TXGBE_INTR_MISC(wx) (which
resolves to BIT(wx->num_q_vectors)). While this is correct for MSI-X
mode, it is incorrect for legacy INTx or single MSI modes.

Due to hardware behavior, the WX_PX_MISC_IVAR register is completely
ignored by the hardware when MSI-X is disabled. In non-MSI-X mode, the
hardware forcibly merges all interrupt causes (both Queue and MISC) into
a single bit: BIT(0) of the interrupt register.

[...]

Here is the summary with links:
  - [net,v2] net: txgbe: fix MISC interrupt unmasking in non-MSI-X mode and device shutdown
    https://git.kernel.org/netdev/net/c/7bf29145d7a9

You are awesome, thank you!
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