linux-kernel - [PATCH v3 2/5] soc: hisilicon: kunpeng_hccs: Add failure log for no

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Message-ID: <20231201034534.7276-3-lihuisong@huawei.com>
Date:   Fri, 1 Dec 2023 11:45:31 +0800
From:   Huisong Li <lihuisong@...wei.com>
To:     <xuwei5@...ilicon.com>
CC:     <linux-kernel@...r.kernel.org>, <soc@...nel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <Jonathan.Cameron@...wei.com>, <arnd@...db.de>, <krzk@...nel.org>,
        <sudeep.holla@....com>, <liuyonglong@...wei.com>,
        <lihuisong@...wei.com>
Subject: [PATCH v3 2/5] soc: hisilicon: kunpeng_hccs: Add failure log for no _CRS method

Driver gets the PCC channel id by using the PCC GAS in _CRS.
But, currently, if the firmware has no _CRS method on platform, there
is not any failure log. So this patch adds the log for this.

Signed-off-by: Huisong Li <lihuisong@...wei.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@...wei.com>
---
 drivers/soc/hisilicon/kunpeng_hccs.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/soc/hisilicon/kunpeng_hccs.c b/drivers/soc/hisilicon/kunpeng_hccs.c
index dad6235dbf1a..fd3ca0eb8175 100644
--- a/drivers/soc/hisilicon/kunpeng_hccs.c
+++ b/drivers/soc/hisilicon/kunpeng_hccs.c
@@ -85,8 +85,10 @@ static int hccs_get_pcc_chan_id(struct hccs_dev *hdev)
 	struct hccs_register_ctx ctx = {0};
 	acpi_status status;
 
-	if (!acpi_has_method(handle, METHOD_NAME__CRS))
+	if (!acpi_has_method(handle, METHOD_NAME__CRS)) {
+		dev_err(hdev->dev, "No _CRS method.\n");
 		return -ENODEV;
+	}
 
 	ctx.dev = hdev->dev;
 	status = acpi_walk_resources(handle, METHOD_NAME__CRS,
-- 
2.33.0