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Fri, 24 Jul 2026 12:30:27 -0700 (PDT) Date: Fri, 24 Jul 2026 12:30:24 -0700 From: Dmitry Torokhov To: Sang-Heon Jeon Cc: Julia.Lawall@inria.fr, cocci@inria.fr, linux-input@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 16/36] Input: remove conditional return with no effect Message-ID: References: <20260723184538.3888637-1-ekffu200098@gmail.com> <20260723184538.3888637-17-ekffu200098@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260723184538.3888637-17-ekffu200098@gmail.com> On Fri, Jul 24, 2026 at 03:45:18AM +0900, Sang-Heon Jeon wrote: > Both branches of the check return the same value, so the check has > no effect. Remove it and return the value directly. > > This is the result of running the Coccinelle script from > scripts/coccinelle/misc/cond_return_no_effect.cocci. > > Signed-off-by: Sang-Heon Jeon > --- > drivers/input/keyboard/pmic8xxx-keypad.c | 8 +------- > drivers/input/mouse/synaptics_i2c.c | 6 +----- > drivers/input/rmi4/rmi_smbus.c | 7 +------ > 3 files changed, 3 insertions(+), 18 deletions(-) > > diff --git a/drivers/input/keyboard/pmic8xxx-keypad.c b/drivers/input/keyboard/pmic8xxx-keypad.c > index 35d1aa2a22a5..c916e80e2f58 100644 > --- a/drivers/input/keyboard/pmic8xxx-keypad.c > +++ b/drivers/input/keyboard/pmic8xxx-keypad.c > @@ -462,15 +462,9 @@ static int pmic8xxx_kp_enable(struct pmic8xxx_kp *kp) > > static int pmic8xxx_kp_disable(struct pmic8xxx_kp *kp) > { > - int rc; > - > kp->ctrl_reg &= ~KEYP_CTRL_KEYP_EN; > > - rc = regmap_write(kp->regmap, KEYP_CTRL, kp->ctrl_reg); > - if (rc < 0) > - return rc; > - > - return rc; > + return regmap_write(kp->regmap, KEYP_CTRL, kp->ctrl_reg); This is fine. > } > > static int pmic8xxx_kp_open(struct input_dev *dev) > diff --git a/drivers/input/mouse/synaptics_i2c.c b/drivers/input/mouse/synaptics_i2c.c > index d4cf982f1263..85e37e2ce45b 100644 > --- a/drivers/input/mouse/synaptics_i2c.c > +++ b/drivers/input/mouse/synaptics_i2c.c > @@ -257,11 +257,7 @@ static s32 synaptics_i2c_reg_set(struct i2c_client *client, u16 reg, u8 val) > if (error) > return error; > > - error = i2c_smbus_write_byte_data(client, reg & 0xff, val); > - if (error) > - return error; > - > - return error; > + return i2c_smbus_write_byte_data(client, reg & 0xff, val); When there ate multiple failure points the preference is to explicitly return 0 on success. > } > > static s32 synaptics_i2c_word_get(struct i2c_client *client, u16 reg) > diff --git a/drivers/input/rmi4/rmi_smbus.c b/drivers/input/rmi4/rmi_smbus.c > index 6de68c602558..3160714a514a 100644 > --- a/drivers/input/rmi4/rmi_smbus.c > +++ b/drivers/input/rmi4/rmi_smbus.c > @@ -177,13 +177,8 @@ static int smb_block_read(struct rmi_transport_dev *xport, > struct rmi_smb_xport *rmi_smb = > container_of(xport, struct rmi_smb_xport, xport); > struct i2c_client *client = rmi_smb->client; > - int retval; > > - retval = i2c_smbus_read_block_data(client, commandcode, buf); > - if (retval < 0) > - return retval; > - > - return retval; > + return i2c_smbus_read_block_data(client, commandcode, buf); This is fine too... > } > > static int rmi_smb_read_block(struct rmi_transport_dev *xport, u16 rmiaddr, Thanks. -- Dmitry