linux-kernel - [PATCH 1/5] media: dvb: Use int type to store negative error codes

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Message-Id: <20250827123916.504189-2-rongqianfeng@vivo.com>
Date: Wed, 27 Aug 2025 20:39:09 +0800
From: Qianfeng Rong <rongqianfeng@...o.com>
To: Abylay Ospan <aospan@...zon.com>,
	Mauro Carvalho Chehab <mchehab@...nel.org>,
	Qianfeng Rong <rongqianfeng@...o.com>,
	linux-media@...r.kernel.org (open list:MEDIA DRIVERS FOR CXD2841ER),
	linux-kernel@...r.kernel.org (open list)
Subject: [PATCH 1/5] media: dvb: Use int type to store negative error codes

Change the 'ret' variable from u8/u32 to int to store zero or negative
error codes returned by other functions.

Storing the negative error codes in unsigned type, doesn't cause an issue
at runtime but it's ugly as pants.

No effect on runtime.

Signed-off-by: Qianfeng Rong <rongqianfeng@...o.com>
---
 drivers/media/dvb-frontends/cxd2841er.c | 3 ++-
 drivers/media/dvb-frontends/lgdt330x.c  | 4 ++--
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/media/dvb-frontends/cxd2841er.c b/drivers/media/dvb-frontends/cxd2841er.c
index 415f1f91cc30..8fcb4417ba22 100644
--- a/drivers/media/dvb-frontends/cxd2841er.c
+++ b/drivers/media/dvb-frontends/cxd2841er.c
@@ -1936,7 +1936,8 @@ static void cxd2841er_read_ber(struct dvb_frontend *fe)
 {
 	struct dtv_frontend_properties *p = &fe->dtv_property_cache;
 	struct cxd2841er_priv *priv = fe->demodulator_priv;
-	u32 ret, bit_error = 0, bit_count = 0;
+	u32 bit_error = 0, bit_count = 0;
+	int ret;
 
 	dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
 	switch (p->delivery_system) {
diff --git a/drivers/media/dvb-frontends/lgdt330x.c b/drivers/media/dvb-frontends/lgdt330x.c
index cab442a350a5..8c34a5b850bc 100644
--- a/drivers/media/dvb-frontends/lgdt330x.c
+++ b/drivers/media/dvb-frontends/lgdt330x.c
@@ -124,7 +124,6 @@ static int i2c_read_demod_bytes(struct lgdt330x_state *state,
 /* Software reset */
 static int lgdt3302_sw_reset(struct lgdt330x_state *state)
 {
-	u8 ret;
 	u8 reset[] = {
 		IRQ_MASK,
 		/*
@@ -133,6 +132,7 @@ static int lgdt3302_sw_reset(struct lgdt330x_state *state)
 		 */
 		0x00
 	};
+	int ret;
 
 	ret = i2c_write_demod_bytes(state,
 				    reset, sizeof(reset));
@@ -147,11 +147,11 @@ static int lgdt3302_sw_reset(struct lgdt330x_state *state)
 
 static int lgdt3303_sw_reset(struct lgdt330x_state *state)
 {
-	u8 ret;
 	u8 reset[] = {
 		0x02,
 		0x00 /* bit 0 is active low software reset */
 	};
+	int ret;
 
 	ret = i2c_write_demod_bytes(state,
 				    reset, sizeof(reset));
-- 
2.34.1