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[PATCH v5 2/5] scpi: Do not fail if get_capabilities is not implemented

Started byNeil Armstrong <narmstrong@baylibre.com>
First post2016-10-19 16:30 +0200
Last post2016-10-19 16:30 +0200
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  [PATCH v5 2/5] scpi: Do not fail if get_capabilities is not implemented Neil Armstrong <narmstrong@baylibre.com> - 2016-10-19 16:30 +0200

#1503666 — [PATCH v5 2/5] scpi: Do not fail if get_capabilities is not implemented

FromNeil Armstrong <narmstrong@baylibre.com>
Date2016-10-19 16:30 +0200
Subject[PATCH v5 2/5] scpi: Do not fail if get_capabilities is not implemented
Message-ID<su02u-2rf-63@gated-at.bofh.it>
On Amlogic SCPI legacy implementation, the GET_CAPABILITIES is not
supported, failover by using 0.0.0 version.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
---
 drivers/firmware/arm_scpi.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/firmware/arm_scpi.c b/drivers/firmware/arm_scpi.c
index 2982bc7..9022336 100644
--- a/drivers/firmware/arm_scpi.c
+++ b/drivers/firmware/arm_scpi.c
@@ -783,6 +783,10 @@ static int scpi_init_versions(struct scpi_drvinfo *info)
 		info->protocol_version = le32_to_cpu(caps.protocol_version);
 		info->firmware_version = le32_to_cpu(caps.platform_version);
 	}
+	/* Ignore error if not implemented */
+	if (scpi_info->is_legacy && ret == -EOPNOTSUPP)
+		return 0;
+
 	return ret;
 }
 
-- 
1.9.1

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