linux-kernel - Re: [PATCH v2] PCI: aardvark: Fix PCI_EXP

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Date:   Fri, 14 Jun 2019 10:58:54 +0200
From:   Thomas Petazzoni <thomas.petazzoni@...tlin.com>
To:     Remi Pommarel <repk@...plefau.lt>
Cc:     Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Bjorn Helgaas <helgaas@...nel.org>,
        Ellie Reeves <ellierevves@...il.com>,
        linux-pci@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] PCI: aardvark: Fix PCI_EXP_RTCTL conf register
 writing

Hello,

On Fri, 14 Jun 2019 08:42:25 +0200
Remi Pommarel <repk@...plefau.lt> wrote:

> PCI_EXP_RTCTL is used to activate PME interrupt only, so writing into it
> should not modify other interrupts' mask. The ISR mask polarity was also
> inverted, when PCI_EXP_RTCTL_PMEIE is set PCIE_MSG_PM_PME_MASK mask bit
> should actually be cleared.
> 
> Fixes: 6302bf3ef78d ("PCI: Init PCIe feature bits for managed host bridge alloc")

Are you sure about this Fixes tag ? This commit seems unrelated.

The commit introducing this issue is 8a3ebd8de328301aacbe328650a59253be2ac82c.

Best regards,

Thomas
-- 
Thomas Petazzoni, CTO, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com