linux-kernel - [PATCH v2 12/15] media: i2c: ds90ub960: Handle errors in ub960_log_status_ub960_sp

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Message-Id: <20241108-ub9xx-fixes-v2-12-c7db3b2ad89f@ideasonboard.com>
Date: Fri, 08 Nov 2024 11:34:56 +0200
From: Tomi Valkeinen <tomi.valkeinen@...asonboard.com>
To: Mauro Carvalho Chehab <mchehab@...nel.org>, 
 Sakari Ailus <sakari.ailus@...ux.intel.com>, 
 Hans Verkuil <hverkuil-cisco@...all.nl>, 
 Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc: linux-media@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Jai Luthra <jai.luthra@...asonboard.com>, 
 Tomi Valkeinen <tomi.valkeinen@...asonboard.com>
Subject: [PATCH v2 12/15] media: i2c: ds90ub960: Handle errors in
 ub960_log_status_ub960_sp_eq()

Add error handling for i2c read/write calls to
ub960_log_status_ub960_sp_eq().

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@...asonboard.com>
---
 drivers/media/i2c/ds90ub960.c | 23 +++++++++++++++++------
 1 file changed, 17 insertions(+), 6 deletions(-)

diff --git a/drivers/media/i2c/ds90ub960.c b/drivers/media/i2c/ds90ub960.c
index 64b5297c5f22..1dc10b2ba1f1 100644
--- a/drivers/media/i2c/ds90ub960.c
+++ b/drivers/media/i2c/ds90ub960.c
@@ -2982,38 +2982,49 @@ static void ub960_log_status_ub960_sp_eq(struct ub960_data *priv,
 	struct device *dev = &priv->client->dev;
 	u8 eq_level;
 	s8 strobe_pos;
-	u8 v = 0;
+	int ret;
+	u8 v;
 
 	/* Strobe */
 
-	ub960_read(priv, UB960_XR_AEQ_CTL1, &v);
+	ret = ub960_read(priv, UB960_XR_AEQ_CTL1, &v);
+	if (ret)
+		return;
 
 	dev_info(dev, "\t%s strobe\n",
 		 (v & UB960_XR_AEQ_CTL1_AEQ_SFILTER_EN) ? "Adaptive" :
 							  "Manual");
 
 	if (v & UB960_XR_AEQ_CTL1_AEQ_SFILTER_EN) {
-		ub960_read(priv, UB960_XR_SFILTER_CFG, &v);
+		ret = ub960_read(priv, UB960_XR_SFILTER_CFG, &v);
+		if (ret)
+			return;
 
 		dev_info(dev, "\tStrobe range [%d, %d]\n",
 			 ((v >> UB960_XR_SFILTER_CFG_SFILTER_MIN_SHIFT) & 0xf) - 7,
 			 ((v >> UB960_XR_SFILTER_CFG_SFILTER_MAX_SHIFT) & 0xf) - 7);
 	}
 
-	ub960_rxport_get_strobe_pos(priv, nport, &strobe_pos);
+	ret = ub960_rxport_get_strobe_pos(priv, nport, &strobe_pos);
+	if (ret)
+		return;
 
 	dev_info(dev, "\tStrobe pos %d\n", strobe_pos);
 
 	/* EQ */
 
-	ub960_rxport_read(priv, nport, UB960_RR_AEQ_BYPASS, &v);
+	ret = ub960_rxport_read(priv, nport, UB960_RR_AEQ_BYPASS, &v);
+	if (ret)
+		return;
 
 	dev_info(dev, "\t%s EQ\n",
 		 (v & UB960_RR_AEQ_BYPASS_ENABLE) ? "Manual" :
 						    "Adaptive");
 
 	if (!(v & UB960_RR_AEQ_BYPASS_ENABLE)) {
-		ub960_rxport_read(priv, nport, UB960_RR_AEQ_MIN_MAX, &v);
+		ret = ub960_rxport_read(priv, nport, UB960_RR_AEQ_MIN_MAX, &v);
+		if (ret)
+			return;
 
 		dev_info(dev, "\tEQ range [%u, %u]\n",
 			 (v >> UB960_RR_AEQ_MIN_MAX_AEQ_FLOOR_SHIFT) & 0xf,

-- 
2.43.0