From fd9bba4caa0d21a0569c8bc75876c3dbe0f46c39 Mon Sep 17 00:00:00 2001 From: Asutosh Das Date: Fri, 10 Feb 2017 09:58:55 +0530 Subject: [PATCH] phy: qcom-ufs: parse ref-clk details prior to resource request Do not request a resource if the ref clk regulator details are not defined in ufs phy node. Change-Id: I10eb426d4407388681340cb71fe9e761794dc298 Signed-off-by: Asutosh Das --- drivers/phy/phy-qcom-ufs.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/phy/phy-qcom-ufs.c b/drivers/phy/phy-qcom-ufs.c index 6e06fef81849..c3cb57ed6083 100644 --- a/drivers/phy/phy-qcom-ufs.c +++ b/drivers/phy/phy-qcom-ufs.c @@ -267,6 +267,14 @@ static int __ufs_qcom_phy_init_vreg(struct phy *phy, char prop_name[MAX_PROP_NAME]; + if (dev->of_node) { + snprintf(prop_name, MAX_PROP_NAME, "%s-supply", name); + if (!of_parse_phandle(dev->of_node, prop_name, 0)) { + dev_dbg(dev, "No vreg data found for %s\n", prop_name); + return optional ? err : -ENODATA; + } + } + vreg->name = kstrdup(name, GFP_KERNEL); if (!vreg->name) { err = -ENOMEM;