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Message-Id: <1475652814-30619-4-git-send-email-narmstrong@baylibre.com>
Date: Wed, 5 Oct 2016 09:33:29 +0200
From: Neil Armstrong <narmstrong@...libre.com>
To: linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
sudeep.holla@....com
Cc: Neil Armstrong <narmstrong@...libre.com>,
linux-amlogic@...ts.infradead.org, khilman@...libre.com,
heiko@...ech.de, wxt@...k-chips.com, frank.wang@...k-chips.com
Subject: [PATCH v4 3/8] scpi: Do not fail if get_capabilities is not implemented
On Amlogic SCPI legacy implementation, the GET_CAPABILITIES is not
supported, failover by using 0.0.0 version.
Signed-off-by: Neil Armstrong <narmstrong@...libre.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 6244eb1..1fb3bbf 100644
--- a/drivers/firmware/arm_scpi.c
+++ b/drivers/firmware/arm_scpi.c
@@ -807,6 +807,10 @@ 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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