linux-kernel - [PATCH v11 8/8] interconnect: sdm845: Fix build failure after cmd

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Date:   Fri,  7 Dec 2018 17:29:17 +0200
From:   Georgi Djakov <georgi.djakov@...aro.org>
To:     gregkh@...uxfoundation.org, linux-pm@...r.kernel.org
Cc:     rjw@...ysocki.net, robh+dt@...nel.org, mturquette@...libre.com,
        khilman@...libre.com, vincent.guittot@...aro.org,
        skannan@...eaurora.org, bjorn.andersson@...aro.org,
        amit.kucheria@...aro.org, seansw@....qualcomm.com,
        daidavid1@...eaurora.org, evgreen@...omium.org,
        dianders@...omium.org, mark.rutland@....com,
        lorenzo.pieralisi@....com, abailon@...libre.com,
        maxime.ripard@...tlin.com, arnd@...db.de, thierry.reding@...il.com,
        ksitaraman@...dia.com, sanjayc@...dia.com,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-arm-msm@...r.kernel.org, linux-tegra@...r.kernel.org,
        georgi.djakov@...aro.org
Subject: [PATCH v11 8/8] interconnect: sdm845: Fix build failure after cmd_db API change

Recently the cmd_db_read_aux_data() function was changed to avoid using
memcpy and return a pointer instead. Update the code to the new API and
fix the build failure.

Fixes: ed3cafa79ea7 ("soc: qcom: cmd-db: Stop memcpy()ing in cmd_db_read_aux_data()")
Signed-off-by: Georgi Djakov <georgi.djakov@...aro.org>
---
 drivers/interconnect/qcom/sdm845.c | 26 ++++++++++++++------------
 1 file changed, 14 insertions(+), 12 deletions(-)

diff --git a/drivers/interconnect/qcom/sdm845.c b/drivers/interconnect/qcom/sdm845.c
index f594dd6f500f..06dbc99766ee 100644
--- a/drivers/interconnect/qcom/sdm845.c
+++ b/drivers/interconnect/qcom/sdm845.c
@@ -487,7 +487,9 @@ static struct qcom_icc_desc sdm845_rsc_hlos = {
 static int qcom_icc_bcm_init(struct qcom_icc_bcm *bcm, struct device *dev)
 {
 	struct qcom_icc_node *qn;
-	int ret, i;
+	const struct bcm_db *data;
+	size_t data_count;
+	int i;
 
 	bcm->addr = cmd_db_read_addr(bcm->name);
 	if (!bcm->addr) {
@@ -496,22 +498,22 @@ static int qcom_icc_bcm_init(struct qcom_icc_bcm *bcm, struct device *dev)
 		return -EINVAL;
 	}
 
-	if (cmd_db_read_aux_data_len(bcm->name) < sizeof(struct bcm_db)) {
+	data = cmd_db_read_aux_data(bcm->name, &data_count);
+	if (IS_ERR(data)) {
+		dev_err(dev, "%s command db read error (%ld)\n",
+			bcm->name, PTR_ERR(data));
+		return PTR_ERR(data);
+	}
+	if (!data_count) {
 		dev_err(dev, "%s command db missing or partial aux data\n",
 			bcm->name);
 		return -EINVAL;
 	}
 
-	ret = cmd_db_read_aux_data(bcm->name, (u8 *)&bcm->aux_data,
-				   sizeof(struct bcm_db));
-	if (ret < 0) {
-		dev_err(dev, "%s command db read error (%d)\n",
-			bcm->name, ret);
-		return ret;
-	}
-
-	bcm->aux_data.unit = le32_to_cpu(bcm->aux_data.unit);
-	bcm->aux_data.width = le16_to_cpu(bcm->aux_data.width);
+	bcm->aux_data.unit = le32_to_cpu(data->unit);
+	bcm->aux_data.width = le16_to_cpu(data->width);
+	bcm->aux_data.vcd = data->vcd;
+	bcm->aux_data.reserved = data->reserved;
 
 	/*
 	 * Link Qnodes to their respective BCMs