linux-kernel - [PATCH] acpi, nfit: Fix ARS overflow continuation

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Message-ID: <154152034315.1304656.17798869260848445154.stgit@dwillia2-desk3.amr.corp.intel.com>
Date:   Tue, 06 Nov 2018 08:05:43 -0800
From:   Dan Williams <dan.j.williams@...el.com>
To:     linux-nvdimm@...ts.01.org
Cc:     stable@...r.kernel.org, Jacek Zloch <jacek.zloch@...el.com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH] acpi, nfit: Fix ARS overflow continuation

When the platform BIOS is unable to report all the media error records
it requires the OS to restart the scrub at a prescribed location. The
driver detects the overflow condition, but then fails to report it to
the ARS state machine after reaping the records. Propagate -ENOSPC
correctly to continue the ARS operation.

Cc: <stable@...r.kernel.org>
Fixes: 1cf03c00e7c1 ("nfit: scrub and register regions in a workqueue")
Reported-by: Jacek Zloch <jacek.zloch@...el.com>
Signed-off-by: Dan Williams <dan.j.williams@...el.com>
---
 drivers/acpi/nfit/core.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c
index f8c638f3c946..5970b8f5f768 100644
--- a/drivers/acpi/nfit/core.c
+++ b/drivers/acpi/nfit/core.c
@@ -2928,9 +2928,9 @@ static int acpi_nfit_query_poison(struct acpi_nfit_desc *acpi_desc)
 		return rc;
 
 	if (ars_status_process_records(acpi_desc))
-		return -ENOMEM;
+		dev_err(acpi_desc->dev, "Failed to process ARS records\n");
 
-	return 0;
+	return rc;
 }
 
 static int ars_register(struct acpi_nfit_desc *acpi_desc,