linux-kernel - [PATCH 2/2] ACPI: EC: Avoid returning AE

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Message-Id: <20240522213649.2860-2-W_Armin@gmx.de>
Date: Wed, 22 May 2024 23:36:49 +0200
From: Armin Wolf <W_Armin@....de>
To: rafael@...nel.org,
	lenb@...nel.org
Cc: linux-acpi@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 2/2] ACPI: EC: Avoid returning AE_OK upon unknown error

If an error code other than EINVAL, ENODEV or ETIME is returned
by acpi_ec_read()/acpi_ec_write(), then AE_OK is wrongly returned.

Fix this by only returning AE_OK if the return code is 0, and
return AE_ERROR otherwise.

Signed-off-by: Armin Wolf <W_Armin@....de>
---
 drivers/acpi/ec.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index a68dce2147a4..68dd17f96f63 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -1351,8 +1351,10 @@ acpi_ec_space_handler(u32 function, acpi_physical_address address,
 		return AE_NOT_FOUND;
 	case -ETIME:
 		return AE_TIME;
-	default:
+	case 0:
 		return AE_OK;
+	default:
+		return AE_ERROR;
 	}
 }

--
2.39.2