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Thu, 19 Mar 2026 15:57:39 -0700 (PDT) From: Gabriel Rondon To: lars@metafoo.de, Michael.Hennerich@analog.com, jic23@kernel.org, gregkh@linuxfoundation.org Cc: dlechner@baylibre.com, nuno.sa@analog.com, andy@kernel.org, linux-iio@vger.kernel.org, linux-staging@lists.linux.dev, linux-kernel@vger.kernel.org Subject: [PATCH 1/3] staging: iio: ad7816: use sysfs_emit() in show functions Date: Thu, 19 Mar 2026 22:57:17 +0000 Message-Id: <20260319225719.73587-2-grondon@gmail.com> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20260319225719.73587-1-grondon@gmail.com> References: <20260319225719.73587-1-grondon@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Replace sprintf() with sysfs_emit() in all sysfs attribute show functions. sysfs_emit() is the preferred API for sysfs callbacks as it is aware of the PAGE_SIZE buffer limit. No functional change. Signed-off-by: Gabriel Rondon --- drivers/staging/iio/adc/ad7816.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/drivers/staging/iio/adc/ad7816.c b/drivers/staging/iio/adc/ad7= 816.c index 172acf135..0e32a2295 100644 --- a/drivers/staging/iio/adc/ad7816.c +++ b/drivers/staging/iio/adc/ad7816.c @@ -124,8 +124,8 @@ static ssize_t ad7816_show_mode(struct device *dev, struct ad7816_chip_info *chip =3D iio_priv(indio_dev); =20 if (chip->mode) - return sprintf(buf, "power-save\n"); - return sprintf(buf, "full\n"); + return sysfs_emit(buf, "power-save\n"); + return sysfs_emit(buf, "full\n"); } =20 static ssize_t ad7816_store_mode(struct device *dev, @@ -156,7 +156,7 @@ static ssize_t ad7816_show_available_modes(struct devic= e *dev, struct device_attribute *attr, char *buf) { - return sprintf(buf, "full\npower-save\n"); + return sysfs_emit(buf, "full\npower-save\n"); } =20 static IIO_DEVICE_ATTR(available_modes, 0444, ad7816_show_available_modes, @@ -169,7 +169,7 @@ static ssize_t ad7816_show_channel(struct device *dev, struct iio_dev *indio_dev =3D dev_to_iio_dev(dev); struct ad7816_chip_info *chip =3D iio_priv(indio_dev); =20 - return sprintf(buf, "%d\n", chip->channel_id); + return sysfs_emit(buf, "%d\n", chip->channel_id); } =20 static ssize_t ad7816_store_channel(struct device *dev, @@ -231,9 +231,9 @@ static ssize_t ad7816_show_value(struct device *dev, data &=3D AD7816_TEMP_FLOAT_MASK; if (value < 0) data =3D BIT(AD7816_TEMP_FLOAT_OFFSET) - data; - return sprintf(buf, "%d.%.2d\n", value, data * 25); + return sysfs_emit(buf, "%d.%.2d\n", value, data * 25); } - return sprintf(buf, "%u\n", data); + return sysfs_emit(buf, "%u\n", data); } =20 static IIO_DEVICE_ATTR(value, 0444, ad7816_show_value, NULL, 0); @@ -281,9 +281,9 @@ static ssize_t ad7816_show_oti(struct device *dev, value =3D AD7816_BOUND_VALUE_MIN + (chip->oti_data[chip->channel_id] - AD7816_BOUND_VALUE_BASE); - return sprintf(buf, "%d\n", value); + return sysfs_emit(buf, "%d\n", value); } - return sprintf(buf, "%u\n", chip->oti_data[chip->channel_id]); + return sysfs_emit(buf, "%u\n", chip->oti_data[chip->channel_id]); 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Thu, 19 Mar 2026 15:57:47 -0700 (PDT) From: Gabriel Rondon To: lars@metafoo.de, Michael.Hennerich@analog.com, jic23@kernel.org, gregkh@linuxfoundation.org Cc: dlechner@baylibre.com, nuno.sa@analog.com, andy@kernel.org, linux-iio@vger.kernel.org, linux-staging@lists.linux.dev, linux-kernel@vger.kernel.org Subject: [PATCH 2/3] staging: iio: ad5933: use sysfs_emit() in show functions Date: Thu, 19 Mar 2026 22:57:18 +0000 Message-Id: <20260319225719.73587-3-grondon@gmail.com> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20260319225719.73587-1-grondon@gmail.com> References: <20260319225719.73587-1-grondon@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Replace sprintf() with sysfs_emit() in all sysfs attribute show functions. sysfs_emit() is the preferred API for sysfs callbacks as it is aware of the PAGE_SIZE buffer limit. No functional change. Signed-off-by: Gabriel Rondon --- .../staging/iio/impedance-analyzer/ad5933.c | 24 +++++++++---------- 1 file changed, 12 insertions(+), 12 deletions(-) diff --git a/drivers/staging/iio/impedance-analyzer/ad5933.c b/drivers/stag= ing/iio/impedance-analyzer/ad5933.c index 85a422329..f470d3966 100644 --- a/drivers/staging/iio/impedance-analyzer/ad5933.c +++ b/drivers/staging/iio/impedance-analyzer/ad5933.c @@ -285,7 +285,7 @@ static ssize_t ad5933_show_frequency(struct device *dev, freqreg =3D (u64)freqreg * (u64)(st->mclk_hz / 4); do_div(freqreg, BIT(27)); =20 - return sprintf(buf, "%d\n", (int)freqreg); + return sysfs_emit(buf, "%d\n", (int)freqreg); } =20 static ssize_t ad5933_store_frequency(struct device *dev, @@ -338,27 +338,27 @@ static ssize_t ad5933_show(struct device *dev, mutex_lock(&st->lock); switch ((u32)this_attr->address) { case AD5933_OUT_RANGE: - len =3D sprintf(buf, "%u\n", - st->range_avail[(st->ctrl_hb >> 1) & 0x3]); + len =3D sysfs_emit(buf, "%u\n", + st->range_avail[(st->ctrl_hb >> 1) & 0x3]); 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Thu, 19 Mar 2026 15:57:54 -0700 (PDT) Received: from localhost.localdomain ([149.102.251.107]) by smtp.gmail.com with ESMTPSA id a1e0cc1a2514c-95136bd79c0sm204828241.6.2026.03.19.15.57.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 19 Mar 2026 15:57:54 -0700 (PDT) From: Gabriel Rondon To: lars@metafoo.de, Michael.Hennerich@analog.com, jic23@kernel.org, gregkh@linuxfoundation.org Cc: dlechner@baylibre.com, nuno.sa@analog.com, andy@kernel.org, linux-iio@vger.kernel.org, linux-staging@lists.linux.dev, linux-kernel@vger.kernel.org Subject: [PATCH 3/3] staging: iio: ad9834: use sysfs_emit() in show functions Date: Thu, 19 Mar 2026 22:57:19 +0000 Message-Id: <20260319225719.73587-4-grondon@gmail.com> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20260319225719.73587-1-grondon@gmail.com> References: <20260319225719.73587-1-grondon@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Replace sprintf() with sysfs_emit() in sysfs attribute show functions. sysfs_emit() is the preferred API for sysfs callbacks as it is aware of the PAGE_SIZE buffer limit. No functional change. Signed-off-by: Gabriel Rondon --- drivers/staging/iio/frequency/ad9834.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/staging/iio/frequency/ad9834.c b/drivers/staging/iio/f= requency/ad9834.c index d339d5e8e..844e92adc 100644 --- a/drivers/staging/iio/frequency/ad9834.c +++ b/drivers/staging/iio/frequency/ad9834.c @@ -290,7 +290,7 @@ ssize_t ad9834_show_out0_wavetype_available(struct devi= ce *dev, else str =3D "sine triangle"; =20 - return sprintf(buf, "%s\n", str); + return sysfs_emit(buf, "%s\n", str); } =20 static IIO_DEVICE_ATTR(out_altvoltage0_out0_wavetype_available, 0444, @@ -310,7 +310,7 @@ ssize_t ad9834_show_out1_wavetype_available(struct devi= ce *dev, else str =3D "square"; =20 - return sprintf(buf, "%s\n", str); + return sysfs_emit(buf, "%s\n", str); } =20 static IIO_DEVICE_ATTR(out_altvoltage0_out1_wavetype_available, 0444, --=20 2.33.0