pmdomain: qcom: cpr: simplify main allocation

Remove kcalloc by using a flexible array member to combine allocations.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

Author: neheb

drivers/pmdomain/qcom/cpr.c

@@ -239,14 +239,15 @@ struct cpr_drv {
 	u32			gcnt;
 	unsigned long		flags;
 
-	struct fuse_corner	*fuse_corners;
 	struct corner		*corners;
 
 	const struct cpr_desc *desc;
 	const struct acc_desc *acc_desc;
 	const struct cpr_fuse *cpr_fuses;
 
 	struct dentry *debugfs;
+
+	struct fuse_corner	fuse_corners[];
 };
 
 static bool cpr_is_allowed(struct cpr_drv *drv)
@@ -1600,19 +1601,15 @@ static int cpr_probe(struct platform_device *pdev)
 	if (!data || !data->cpr_desc || !data->acc_desc)
 		return -EINVAL;
 
-	drv = devm_kzalloc(dev, sizeof(*drv), GFP_KERNEL);
+	drv = devm_kzalloc(dev,
+			struct_size(drv, fuse_corners, data->cpr_desc->num_fuse_corners),
+			GFP_KERNEL);
 	if (!drv)
 		return -ENOMEM;
 	drv->dev = dev;
 	drv->desc = data->cpr_desc;
 	drv->acc_desc = data->acc_desc;
 
-	drv->fuse_corners = devm_kcalloc(dev, drv->desc->num_fuse_corners,
-					 sizeof(*drv->fuse_corners),
-					 GFP_KERNEL);
-	if (!drv->fuse_corners)
-		return -ENOMEM;
-
 	np = of_parse_phandle(dev->of_node, "acc-syscon", 0);
 	if (!np)
 		return -ENODEV;