[PATCH v10 27/36] phy: rockchip: usbdp: Handle rk_udphy_reset_deassert errors

[Sebastian Reichel]

Handle rk_udphy_reset_deassert returning errors to avoid theoretical
(Rockchip reset controller driver does not return errors) SError.

Fixes: 2f70bbddeb45 ("phy: rockchip: add usbdp combo phy driver")
Reported-by: Sashiko <sashiko-bot at kernel.org>
Closes: https://sashiko.dev/#/message/20260626211151.2332F1F000E9%40smtp.kernel.org
Signed-off-by: Sebastian Reichel <sebastian.reichel at collabora.com>
---
 drivers/phy/rockchip/phy-rockchip-usbdp.c | 25 +++++++++++++++++++------
 1 file changed, 19 insertions(+), 6 deletions(-)

diff --git a/drivers/phy/rockchip/phy-rockchip-usbdp.c b/drivers/phy/rockchip/phy-rockchip-usbdp.c
index 9e77513643a3..c645fea67c4d 100644
--- a/drivers/phy/rockchip/phy-rockchip-usbdp.c
+++ b/drivers/phy/rockchip/phy-rockchip-usbdp.c
@@ -803,8 +803,12 @@ static int rk_udphy_init(struct rk_udphy *udphy)
 	/* Step 1: power on pma and deassert apb rstn */
 	rk_udphy_grfreg_write(udphy->udphygrf, &cfg->grfcfg.low_pwrn, true);
 
-	rk_udphy_reset_deassert(udphy, "pma_apb");
-	rk_udphy_reset_deassert(udphy, "pcs_apb");
+	ret = rk_udphy_reset_deassert(udphy, "pma_apb");
+	if (ret)
+		goto assert_resets;
+	ret = rk_udphy_reset_deassert(udphy, "pcs_apb");
+	if (ret)
+		goto assert_resets;
 
 	/* Step 2: set init sequence and phy refclk */
 	ret = regmap_multi_reg_write(udphy->pma_regmap, rk_udphy_init_sequence,
@@ -830,8 +834,11 @@ static int rk_udphy_init(struct rk_udphy *udphy)
 			   FIELD_PREP(CMN_DP_LANE_EN_ALL, 0));
 
 	/* Step 4: deassert init rstn and wait for 200ns from datasheet */
-	if (udphy->mode & UDPHY_MODE_USB)
-		rk_udphy_reset_deassert(udphy, "init");
+	if (udphy->mode & UDPHY_MODE_USB) {
+		ret = rk_udphy_reset_deassert(udphy, "init");
+		if (ret)
+			goto assert_resets;
+	}
 
 	if (udphy->mode & UDPHY_MODE_DP) {
 		regmap_update_bits(udphy->pma_regmap, CMN_DP_RSTN_OFFSET,
@@ -843,8 +850,14 @@ static int rk_udphy_init(struct rk_udphy *udphy)
 
 	/*  Step 5: deassert cmn/lane rstn */
 	if (udphy->mode & UDPHY_MODE_USB) {
-		rk_udphy_reset_deassert(udphy, "cmn");
-		rk_udphy_reset_deassert(udphy, "lane");
+		ret = rk_udphy_reset_deassert(udphy, "cmn");
+		if (ret)
+			goto assert_resets;
+
+		ret = rk_udphy_reset_deassert(udphy, "lane");
+		if (ret)
+			goto assert_resets;
+
 	}
 
 	/*  Step 6: wait for lock done of pll */

-- 
2.53.0