linux-kernel - [PATCH] ACPI: nfit: return -ENODEV if fail to find NFIT at startup

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Message-Id: <1533289198-11400-1-git-send-email-oceanhehy@gmail.com>
Date:   Fri,  3 Aug 2018 05:39:58 -0400
From:   Ocean He <oceanhehy@...il.com>
To:     dan.j.williams@...el.com, ross.zwisler@...ux.intel.com,
        vishal.l.verma@...el.com, dave.jiang@...el.com, rjw@...ysocki.net,
        lenb@...nel.org
Cc:     linux-nvdimm@...ts.01.org, linux-acpi@...r.kernel.org,
        linux-kernel@...r.kernel.org, Ocean He <hehy1@...ovo.com>
Subject: [PATCH] ACPI: nfit: return -ENODEV if fail to find NFIT at startup

From: Ocean He <hehy1@...ovo.com>

In the beginning of acpi_nfit_add, if fail to find NFIT table then should
return -ENODEV, instead of 0.

Signed-off-by: Ocean He <hehy1@...ovo.com>
---
 drivers/acpi/nfit/core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c
index 7c47900..1790d7c 100644
--- a/drivers/acpi/nfit/core.c
+++ b/drivers/acpi/nfit/core.c
@@ -3355,7 +3355,7 @@ static int acpi_nfit_add(struct acpi_device *adev)
 	if (ACPI_FAILURE(status)) {
 		/* This is ok, we could have an nvdimm hotplugged later */
 		dev_dbg(dev, "failed to find NFIT at startup\n");
-		return 0;
+		return -ENODEV;
 	}
 
 	rc = devm_add_action_or_reset(dev, acpi_nfit_put_table, tbl);
-- 
1.8.3.1