linux-kernel - [PATCH V3] acpi: apei: check for pending errors when probing GHES entries

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Date:   Thu, 18 May 2017 15:22:42 -0600
From:   Tyler Baicar <tbaicar@...eaurora.org>
To:     rjw@...ysocki.net, lenb@...nel.org, bp@...e.de, prarit@...hat.com,
        bhelgaas@...gle.com, punit.agrawal@....com, mingo@...nel.org,
        linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org,
        shiju.jose@...wei.com, James.Morse@....com, ahs3@...hat.com
Cc:     Tyler Baicar <tbaicar@...eaurora.org>
Subject: [PATCH V3] acpi: apei: check for pending errors when probing GHES entries

Check for pending errors when probing GHES entries. It is possible
that a fatal error is already pending at this point, so we should
handle it as soon as the driver is probed. This also avoids a
potential issue if there was an interrupt that was already
cleared for an error since the GHES driver wasn't present.

V3: Check for pending errors of all GHES types

Signed-off-by: Tyler Baicar <tbaicar@...eaurora.org>
---
 drivers/acpi/apei/ghes.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c
index d0855c0..5347230 100644
--- a/drivers/acpi/apei/ghes.c
+++ b/drivers/acpi/apei/ghes.c
@@ -1039,6 +1039,9 @@ static int ghes_probe(struct platform_device *ghes_dev)
 	}
 	platform_set_drvdata(ghes_dev, ghes);
 
+	/* Handle any pending errors right away */
+	ghes_proc(ghes);
+
 	return 0;
 err_edac_unreg:
 	ghes_edac_unregister(ghes);
-- 
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