Merge tag 'char-misc-6.12-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull misc driver fixes from Greg KH:
 "Here are a number of small char/misc/iio driver fixes for 6.12-rc4:

   - loads of small iio driver fixes for reported problems

   - parport driver out-of-bounds fix

   - Kconfig description and MAINTAINERS file updates

  All of these, except for the Kconfig and MAINTAINERS file updates have
  been in linux-next all week. Those other two are just documentation
  changes and will have no runtime issues and were merged on Friday"

* tag 'char-misc-6.12-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (39 commits)
  misc: rtsx: list supported models in Kconfig help
  MAINTAINERS: Remove some entries due to various compliance requirements.
  misc: microchip: pci1xxxx: add support for NVMEM_DEVID_AUTO for OTP device
  misc: microchip: pci1xxxx: add support for NVMEM_DEVID_AUTO for EEPROM device
  parport: Proper fix for array out-of-bounds access
  iio: frequency: admv4420: fix missing select REMAP_SPI in Kconfig
  iio: frequency: {admv4420,adrf6780}: format Kconfig entries
  iio: adc: ad4695: Add missing Kconfig select
  iio: adc: ti-ads8688: add missing select IIO_(TRIGGERED_)BUFFER in Kconfig
  iio: hid-sensors: Fix an error handling path in _hid_sensor_set_report_latency()
  iioc: dac: ltc2664: Fix span variable usage in ltc2664_channel_config()
  iio: dac: stm32-dac-core: add missing select REGMAP_MMIO in Kconfig
  iio: dac: ltc1660: add missing select REGMAP_SPI in Kconfig
  iio: dac: ad5770r: add missing select REGMAP_SPI in Kconfig
  iio: amplifiers: ada4250: add missing select REGMAP_SPI in Kconfig
  iio: frequency: adf4377: add missing select REMAP_SPI in Kconfig
  iio: resolver: ad2s1210: add missing select (TRIGGERED_)BUFFER in Kconfig
  iio: resolver: ad2s1210 add missing select REGMAP in Kconfig
  iio: proximity: mb1232: add missing select IIO_(TRIGGERED_)BUFFER in Kconfig
  iio: pressure: bm1390: add missing select IIO_(TRIGGERED_)BUFFER in Kconfig
  ...

Documentation/devicetree/bindings/iio/dac/adi,ad5686.yaml

@@ -4,7 +4,7 @@
 $id: http://devicetree.org/schemas/iio/dac/adi,ad5686.yaml#
 $schema: http://devicetree.org/meta-schemas/core.yaml#
 
-title: Analog Devices AD5360 and similar DACs
+title: Analog Devices AD5360 and similar SPI DACs
 
 maintainers:
   - Michael Hennerich <michael.hennerich@analog.com>
@@ -12,41 +12,22 @@ maintainers:
 
 properties:
   compatible:
-    oneOf:
-      - description: SPI devices
-        enum:
-          - adi,ad5310r
-          - adi,ad5672r
-          - adi,ad5674r
-          - adi,ad5676
-          - adi,ad5676r
-          - adi,ad5679r
-          - adi,ad5681r
-          - adi,ad5682r
-          - adi,ad5683
-          - adi,ad5683r
-          - adi,ad5684
-          - adi,ad5684r
-          - adi,ad5685r
-          - adi,ad5686
-          - adi,ad5686r
-      - description: I2C devices
-        enum:
-          - adi,ad5311r
-          - adi,ad5337r
-          - adi,ad5338r
-          - adi,ad5671r
-          - adi,ad5675r
-          - adi,ad5691r
-          - adi,ad5692r
-          - adi,ad5693
-          - adi,ad5693r
-          - adi,ad5694
-          - adi,ad5694r
-          - adi,ad5695r
-          - adi,ad5696
-          - adi,ad5696r
-
+    enum:
+      - adi,ad5310r
+      - adi,ad5672r
+      - adi,ad5674r
+      - adi,ad5676
+      - adi,ad5676r
+      - adi,ad5679r
+      - adi,ad5681r
+      - adi,ad5682r
+      - adi,ad5683
+      - adi,ad5683r
+      - adi,ad5684
+      - adi,ad5684r
+      - adi,ad5685r
+      - adi,ad5686
+      - adi,ad5686r
 
   reg:
     maxItems: 1

Documentation/devicetree/bindings/iio/dac/adi,ad5696.yaml

@@ -4,7 +4,7 @@
 $id: http://devicetree.org/schemas/iio/dac/adi,ad5696.yaml#
 $schema: http://devicetree.org/meta-schemas/core.yaml#
 
-title: Analog Devices AD5696 and similar multi-channel DACs
+title: Analog Devices AD5696 and similar I2C multi-channel DACs
 
 maintainers:
   - Michael Auchter <michael.auchter@ni.com>
@@ -16,6 +16,7 @@ properties:
   compatible:
     enum:
       - adi,ad5311r
+      - adi,ad5337r
       - adi,ad5338r
       - adi,ad5671r
       - adi,ad5675r

drivers/iio/accel/Kconfig

@@ -447,6 +447,8 @@ config IIO_ST_ACCEL_SPI_3AXIS
 
 config IIO_KX022A
 	tristate
+	select IIO_BUFFER
+	select IIO_TRIGGERED_BUFFER
 
 config IIO_KX022A_SPI
 	tristate "Kionix KX022A tri-axis digital accelerometer SPI interface"

drivers/iio/accel/bma400_core.c

@@ -1218,7 +1218,8 @@ static int bma400_activity_event_en(struct bma400_data *data,
 static int bma400_tap_event_en(struct bma400_data *data,
 			       enum iio_event_direction dir, int state)
 {
-	unsigned int mask, field_value;
+	unsigned int mask;
+	unsigned int field_value = 0;
 	int ret;
 
 	/*

drivers/iio/adc/Kconfig

@@ -52,6 +52,8 @@ config AD4695
 	tristate "Analog Device AD4695 ADC Driver"
 	depends on SPI
 	select REGMAP_SPI
+	select IIO_BUFFER
+	select IIO_TRIGGERED_BUFFER
 	help
 	  Say yes here to build support for Analog Devices AD4695 and similar
 	  analog to digital converters (ADC).
@@ -328,6 +330,8 @@ config AD7923
 config AD7944
 	tristate "Analog Devices AD7944 and similar ADCs driver"
 	depends on SPI
+	select IIO_BUFFER
+	select IIO_TRIGGERED_BUFFER
 	help
 	  Say yes here to build support for Analog Devices
 	  AD7944, AD7985, AD7986 ADCs.
@@ -1481,6 +1485,8 @@ config TI_ADS8344
 config TI_ADS8688
 	tristate "Texas Instruments ADS8688"
 	depends on SPI
+	select IIO_BUFFER
+	select IIO_TRIGGERED_BUFFER
 	help
 	  If you say yes here you get support for Texas Instruments ADS8684 and
 	  and ADS8688 ADC chips
@@ -1491,6 +1497,8 @@ config TI_ADS8688
 config TI_ADS124S08
 	tristate "Texas Instruments ADS124S08"
 	depends on SPI
+	select IIO_BUFFER
+	select IIO_TRIGGERED_BUFFER
 	help
 	  If you say yes here you get support for Texas Instruments ADS124S08
 	  and ADS124S06 ADC chips
@@ -1525,6 +1533,9 @@ config TI_AM335X_ADC
 config TI_LMP92064
 	tristate "Texas Instruments LMP92064 ADC driver"
 	depends on SPI
+	select REGMAP_SPI
+	select IIO_BUFFER
+	select IIO_TRIGGERED_BUFFER
 	help
 	  Say yes here to build support for the LMP92064 Precision Current and Voltage
 	  sensor.

drivers/iio/amplifiers/Kconfig

@@ -27,6 +27,7 @@ config AD8366
 config ADA4250
 	tristate "Analog Devices ADA4250 Instrumentation Amplifier"
 	depends on SPI
+	select REGMAP_SPI
 	help
 	  Say yes here to build support for Analog Devices ADA4250
 	  SPI Amplifier's support. The driver provides direct access via

drivers/iio/chemical/Kconfig

@@ -80,6 +80,8 @@ config ENS160
 	tristate "ScioSense ENS160 sensor driver"
 	depends on (I2C || SPI)
 	select REGMAP
+	select IIO_BUFFER
+	select IIO_TRIGGERED_BUFFER
 	select ENS160_I2C if I2C
 	select ENS160_SPI if SPI
 	help

drivers/iio/common/hid-sensors/hid-sensor-trigger.c

@@ -32,7 +32,7 @@ static ssize_t _hid_sensor_set_report_latency(struct device *dev,
 	latency = integer * 1000 + fract / 1000;
 	ret = hid_sensor_set_report_latency(attrb, latency);
 	if (ret < 0)
-		return len;
+		return ret;
 
 	attrb->latency_ms = hid_sensor_get_report_latency(attrb);
 

drivers/iio/dac/Kconfig

@@ -9,6 +9,8 @@ menu "Digital to analog converters"
 config AD3552R
 	tristate "Analog Devices AD3552R DAC driver"
 	depends on SPI_MASTER
+	select IIO_BUFFER
+	select IIO_TRIGGERED_BUFFER
 	help
 	  Say yes here to build support for Analog Devices AD3552R
 	  Digital to Analog Converter.
@@ -252,6 +254,8 @@ config AD5764
 config AD5766
 	tristate "Analog Devices AD5766/AD5767 DAC driver"
 	depends on SPI_MASTER
+	select IIO_BUFFER
+	select IIO_TRIGGERED_BUFFER
 	help
 	  Say yes here to build support for Analog Devices AD5766, AD5767
 	  Digital to Analog Converter.
@@ -262,6 +266,7 @@ config AD5766
 config AD5770R
 	tristate "Analog Devices AD5770R IDAC driver"
 	depends on SPI_MASTER
+	select REGMAP_SPI
 	help
 	  Say yes here to build support for Analog Devices AD5770R Digital to
 	  Analog Converter.
@@ -353,6 +358,7 @@ config LPC18XX_DAC
 config LTC1660
 	tristate "Linear Technology LTC1660/LTC1665 DAC SPI driver"
 	depends on SPI
+	select REGMAP_SPI
 	help
 	  Say yes here to build support for Linear Technology
 	  LTC1660 and LTC1665 Digital to Analog Converters.
@@ -483,6 +489,7 @@ config STM32_DAC
 
 config STM32_DAC_CORE
 	tristate
+	select REGMAP_MMIO
 
 config TI_DAC082S085
 	tristate "Texas Instruments 8/10/12-bit 2/4-channel DAC driver"

drivers/iio/dac/ltc2664.c

@@ -516,7 +516,7 @@ static int ltc2664_channel_config(struct ltc2664_state *st)
 	const struct ltc2664_chip_info *chip_info = st->chip_info;
 	struct device *dev = &st->spi->dev;
 	u32 reg, tmp[2], mspan;
-	int ret, span = 0;
+	int ret;
 
 	mspan = LTC2664_MSPAN_SOFTSPAN;
 	ret = device_property_read_u32(dev, "adi,manual-span-operation-config",
@@ -579,20 +579,21 @@ static int ltc2664_channel_config(struct ltc2664_state *st)
 		ret = fwnode_property_read_u32_array(child, "output-range-microvolt",
 						     tmp, ARRAY_SIZE(tmp));
 		if (!ret && mspan == LTC2664_MSPAN_SOFTSPAN) {
-			chan->span = ltc2664_set_span(st, tmp[0] / 1000,
-						      tmp[1] / 1000, reg);
-			if (span < 0)
-				return dev_err_probe(dev, span,
+			ret = ltc2664_set_span(st, tmp[0] / 1000, tmp[1] / 1000, reg);
+			if (ret < 0)
+				return dev_err_probe(dev, ret,
 						     "Failed to set span\n");
+			chan->span = ret;
 		}
 
 		ret = fwnode_property_read_u32_array(child, "output-range-microamp",
 						     tmp, ARRAY_SIZE(tmp));
 		if (!ret) {
-			chan->span = ltc2664_set_span(st, 0, tmp[1] / 1000, reg);
-			if (span < 0)
-				return dev_err_probe(dev, span,
+			ret = ltc2664_set_span(st, 0, tmp[1] / 1000, reg);
+			if (ret < 0)
+				return dev_err_probe(dev, ret,
 						     "Failed to set span\n");
+			chan->span = ret;
 		}
 	}
 

drivers/iio/frequency/Kconfig

@@ -53,6 +53,7 @@ config ADF4371
 config ADF4377
 	tristate "Analog Devices ADF4377 Microwave Wideband Synthesizer"
 	depends on SPI && COMMON_CLK
+	select REGMAP_SPI
 	help
 	  Say yes here to build support for Analog Devices ADF4377 Microwave
 	  Wideband Synthesizer.
@@ -91,25 +92,26 @@ config ADMV1014
 	  module will be called admv1014.
 
 config ADMV4420
-       tristate "Analog Devices ADMV4420 K Band Downconverter"
-       depends on SPI
-       help
-         Say yes here to build support for Analog Devices K Band
-         Downconverter with integrated Fractional-N PLL and VCO.
+	tristate "Analog Devices ADMV4420 K Band Downconverter"
+	depends on SPI
+	select REGMAP_SPI
+	help
+	  Say yes here to build support for Analog Devices K Band
+	  Downconverter with integrated Fractional-N PLL and VCO.
 
-         To compile this driver as a module, choose M here: the
-         module will be called admv4420.
+	  To compile this driver as a module, choose M here: the
+	  module will be called admv4420.
 
 config ADRF6780
-        tristate "Analog Devices ADRF6780 Microwave Upconverter"
-        depends on SPI
-        depends on COMMON_CLK
-        help
-          Say yes here to build support for Analog Devices ADRF6780
-          5.9 GHz to 23.6 GHz, Wideband, Microwave Upconverter.
-
-          To compile this driver as a module, choose M here: the
-          module will be called adrf6780.
+	tristate "Analog Devices ADRF6780 Microwave Upconverter"
+	depends on SPI
+	depends on COMMON_CLK
+	help
+	  Say yes here to build support for Analog Devices ADRF6780
+	  5.9 GHz to 23.6 GHz, Wideband, Microwave Upconverter.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called adrf6780.
 
 endmenu
 endmenu

drivers/iio/imu/bmi323/bmi323_core.c

@@ -2172,7 +2172,6 @@ int bmi323_core_probe(struct device *dev)
 }
 EXPORT_SYMBOL_NS_GPL(bmi323_core_probe, IIO_BMI323);
 
-#if defined(CONFIG_PM)
 static int bmi323_core_runtime_suspend(struct device *dev)
 {
 	struct iio_dev *indio_dev = dev_get_drvdata(dev);
@@ -2199,12 +2198,12 @@ static int bmi323_core_runtime_suspend(struct device *dev)
 	}
 
 	for (unsigned int i = 0; i < ARRAY_SIZE(bmi323_ext_reg_savestate); i++) {
-		ret = bmi323_read_ext_reg(data, bmi323_reg_savestate[i],
-					  &savestate->reg_settings[i]);
+		ret = bmi323_read_ext_reg(data, bmi323_ext_reg_savestate[i],
+					  &savestate->ext_reg_settings[i]);
 		if (ret) {
 			dev_err(data->dev,
 				"Error reading bmi323 external reg 0x%x: %d\n",
-				bmi323_reg_savestate[i], ret);
+				bmi323_ext_reg_savestate[i], ret);
 			return ret;
 		}
 	}
@@ -2232,8 +2231,10 @@ static int bmi323_core_runtime_resume(struct device *dev)
 	 * after being reset in the lower power state by runtime-pm.
 	 */
 	ret = bmi323_init(data);
-	if (!ret)
+	if (ret) {
+		dev_err(data->dev, "Device power-on and init failed: %d", ret);
 		return ret;
+	}
 
 	/* Register must be cleared before changing an active config */
 	ret = regmap_write(data->regmap, BMI323_FEAT_IO0_REG, 0);
@@ -2243,12 +2244,12 @@ static int bmi323_core_runtime_resume(struct device *dev)
 	}
 
 	for (unsigned int i = 0; i < ARRAY_SIZE(bmi323_ext_reg_savestate); i++) {
-		ret = bmi323_write_ext_reg(data, bmi323_reg_savestate[i],
-					   savestate->reg_settings[i]);
+		ret = bmi323_write_ext_reg(data, bmi323_ext_reg_savestate[i],
+					   savestate->ext_reg_settings[i]);
 		if (ret) {
 			dev_err(data->dev,
 				"Error writing bmi323 external reg 0x%x: %d\n",
-				bmi323_reg_savestate[i], ret);
+				bmi323_ext_reg_savestate[i], ret);
 			return ret;
 		}
 	}
@@ -2293,11 +2294,9 @@ static int bmi323_core_runtime_resume(struct device *dev)
 	return iio_device_resume_triggering(indio_dev);
 }
 
-#endif
-
 const struct dev_pm_ops bmi323_core_pm_ops = {
-	SET_RUNTIME_PM_OPS(bmi323_core_runtime_suspend,
-			   bmi323_core_runtime_resume, NULL)
+	RUNTIME_PM_OPS(bmi323_core_runtime_suspend,
+		       bmi323_core_runtime_resume, NULL)
 };
 EXPORT_SYMBOL_NS_GPL(bmi323_core_pm_ops, IIO_BMI323);
 

drivers/iio/light/Kconfig

@@ -335,6 +335,8 @@ config ROHM_BU27008
 	depends on I2C
 	select REGMAP_I2C
 	select IIO_GTS_HELPER
+	select IIO_BUFFER
+	select IIO_TRIGGERED_BUFFER
 	help
 	  Enable support for the ROHM BU27008 color sensor.
 	  The ROHM BU27008 is a sensor with 5 photodiodes (red, green,

drivers/iio/light/opt3001.c

@@ -138,6 +138,10 @@ static const struct opt3001_scale opt3001_scales[] = {
 		.val = 20966,
 		.val2 = 400000,
 	},
+	{
+		.val = 41932,
+		.val2 = 800000,
+	},
 	{
 		.val = 83865,
 		.val2 = 600000,

drivers/iio/light/veml6030.c

@@ -99,9 +99,8 @@ static const char * const period_values[] = {
 static ssize_t in_illuminance_period_available_show(struct device *dev,
 				struct device_attribute *attr, char *buf)
 {
+	struct veml6030_data *data = iio_priv(dev_to_iio_dev(dev));
 	int ret, reg, x;
-	struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
-	struct veml6030_data *data = iio_priv(indio_dev);
 
 	ret = regmap_read(data->regmap, VEML6030_REG_ALS_CONF, &reg);
 	if (ret) {
@@ -780,7 +779,7 @@ static int veml6030_hw_init(struct iio_dev *indio_dev)
 
 	/* Cache currently active measurement parameters */
 	data->cur_gain = 3;
-	data->cur_resolution = 4608;
+	data->cur_resolution = 5376;
 	data->cur_integration_time = 3;
 
 	return ret;

drivers/iio/magnetometer/Kconfig

@@ -11,6 +11,8 @@ config AF8133J
 	depends on I2C
 	depends on OF
 	select REGMAP_I2C
+	select IIO_BUFFER
+	select IIO_TRIGGERED_BUFFER
 	help
 	  Say yes here to build support for Voltafield AF8133J I2C-based
 	  3-axis magnetometer chip.

drivers/iio/pressure/Kconfig

@@ -19,6 +19,9 @@ config ABP060MG
 config ROHM_BM1390
 	tristate "ROHM BM1390GLV-Z pressure sensor driver"
 	depends on I2C
+	select REGMAP_I2C
+	select IIO_BUFFER
+	select IIO_TRIGGERED_BUFFER
 	help
 	  Support for the ROHM BM1390 pressure sensor. The BM1390GLV-Z
 	  can measure pressures ranging from 300 hPa to 1300 hPa with
@@ -253,6 +256,7 @@ config MS5637
 config SDP500
 	tristate "Sensirion SDP500 differential pressure sensor I2C driver"
 	depends on I2C
+	select CRC8
 	help
 	  Say Y here to build support for Sensirion SDP500 differential pressure
 	  sensor I2C driver.

drivers/iio/proximity/Kconfig

@@ -86,6 +86,8 @@ config LIDAR_LITE_V2
 config MB1232
 	tristate "MaxSonar I2CXL family ultrasonic sensors"
 	depends on I2C
+	select IIO_BUFFER
+	select IIO_TRIGGERED_BUFFER
 	help
 	  Say Y to build a driver for the ultrasonic sensors I2CXL of
 	  MaxBotix which have an i2c interface. It can be used to measure

drivers/iio/resolver/Kconfig

@@ -31,6 +31,9 @@ config AD2S1210
 	depends on SPI
 	depends on COMMON_CLK
 	depends on GPIOLIB || COMPILE_TEST
+	select REGMAP
+	select IIO_BUFFER
+	select IIO_TRIGGERED_BUFFER
 	help
 	  Say yes here to build support for Analog Devices spi resolver
 	  to digital converters, ad2s1210, provides direct access via sysfs.

drivers/misc/cardreader/Kconfig

@@ -16,7 +16,8 @@ config MISC_RTSX_PCI
 	select MFD_CORE
 	help
 	  This supports for Realtek PCI-Express card reader including rts5209,
-	  rts5227, rts522A, rts5229, rts5249, rts524A, rts525A, rtl8411, rts5260.
+	  rts5227, rts5228, rts522A, rts5229, rts5249, rts524A, rts525A, rtl8411,
+	  rts5260, rts5261, rts5264.
 	  Realtek card readers support access to many types of memory cards,
 	  such as Memory Stick, Memory Stick Pro, Secure Digital and
 	  MultiMediaCard.

drivers/misc/mchp_pci1xxxx/mchp_pci1xxxx_otpe2p.c

@@ -364,6 +364,7 @@ static int pci1xxxx_otp_eeprom_probe(struct auxiliary_device *aux_dev,
 	if (is_eeprom_responsive(priv)) {
 		priv->nvmem_config_eeprom.type = NVMEM_TYPE_EEPROM;
 		priv->nvmem_config_eeprom.name = EEPROM_NAME;
+		priv->nvmem_config_eeprom.id = NVMEM_DEVID_AUTO;
 		priv->nvmem_config_eeprom.dev = &aux_dev->dev;
 		priv->nvmem_config_eeprom.owner = THIS_MODULE;
 		priv->nvmem_config_eeprom.reg_read = pci1xxxx_eeprom_read;
@@ -383,6 +384,7 @@ static int pci1xxxx_otp_eeprom_probe(struct auxiliary_device *aux_dev,
 
 	priv->nvmem_config_otp.type = NVMEM_TYPE_OTP;
 	priv->nvmem_config_otp.name = OTP_NAME;
+	priv->nvmem_config_otp.id = NVMEM_DEVID_AUTO;
 	priv->nvmem_config_otp.dev = &aux_dev->dev;
 	priv->nvmem_config_otp.owner = THIS_MODULE;
 	priv->nvmem_config_otp.reg_read = pci1xxxx_otp_read;

drivers/parport/procfs.c

@@ -51,12 +51,12 @@ static int do_active_device(const struct ctl_table *table, int write,
 	
 	for (dev = port->devices; dev ; dev = dev->next) {
 		if(dev == port->cad) {
-			len += snprintf(buffer, sizeof(buffer), "%s\n", dev->name);
+			len += scnprintf(buffer, sizeof(buffer), "%s\n", dev->name);
 		}
 	}
 
 	if(!len) {
-		len += snprintf(buffer, sizeof(buffer), "%s\n", "none");
+		len += scnprintf(buffer, sizeof(buffer), "%s\n", "none");
 	}
 
 	if (len > *lenp)
@@ -87,19 +87,19 @@ static int do_autoprobe(const struct ctl_table *table, int write,
 	}
 	
 	if ((str = info->class_name) != NULL)
-		len += snprintf (buffer + len, sizeof(buffer) - len, "CLASS:%s;\n", str);
+		len += scnprintf (buffer + len, sizeof(buffer) - len, "CLASS:%s;\n", str);
 
 	if ((str = info->model) != NULL)
-		len += snprintf (buffer + len, sizeof(buffer) - len, "MODEL:%s;\n", str);
+		len += scnprintf (buffer + len, sizeof(buffer) - len, "MODEL:%s;\n", str);
 
 	if ((str = info->mfr) != NULL)
-		len += snprintf (buffer + len, sizeof(buffer) - len, "MANUFACTURER:%s;\n", str);
+		len += scnprintf (buffer + len, sizeof(buffer) - len, "MANUFACTURER:%s;\n", str);
 
 	if ((str = info->description) != NULL)
-		len += snprintf (buffer + len, sizeof(buffer) - len, "DESCRIPTION:%s;\n", str);
+		len += scnprintf (buffer + len, sizeof(buffer) - len, "DESCRIPTION:%s;\n", str);
 
 	if ((str = info->cmdset) != NULL)
-		len += snprintf (buffer + len, sizeof(buffer) - len, "COMMAND SET:%s;\n", str);
+		len += scnprintf (buffer + len, sizeof(buffer) - len, "COMMAND SET:%s;\n", str);
 
 	if (len > *lenp)
 		len = *lenp;
@@ -128,7 +128,7 @@ static int do_hardware_base_addr(const struct ctl_table *table, int write,
 	if (write) /* permissions prevent this anyway */
 		return -EACCES;
 
-	len += snprintf (buffer, sizeof(buffer), "%lu\t%lu\n", port->base, port->base_hi);
+	len += scnprintf (buffer, sizeof(buffer), "%lu\t%lu\n", port->base, port->base_hi);
 
 	if (len > *lenp)
 		len = *lenp;
@@ -155,7 +155,7 @@ static int do_hardware_irq(const struct ctl_table *table, int write,
 	if (write) /* permissions prevent this anyway */
 		return -EACCES;
 
-	len += snprintf (buffer, sizeof(buffer), "%d\n", port->irq);
+	len += scnprintf (buffer, sizeof(buffer), "%d\n", port->irq);
 
 	if (len > *lenp)
 		len = *lenp;
@@ -182,7 +182,7 @@ static int do_hardware_dma(const struct ctl_table *table, int write,
 	if (write) /* permissions prevent this anyway */
 		return -EACCES;
 
-	len += snprintf (buffer, sizeof(buffer), "%d\n", port->dma);
+	len += scnprintf (buffer, sizeof(buffer), "%d\n", port->dma);
 
 	if (len > *lenp)
 		len = *lenp;
@@ -213,7 +213,7 @@ static int do_hardware_modes(const struct ctl_table *table, int write,
 #define printmode(x)							\
 do {									\
 	if (port->modes & PARPORT_MODE_##x)				\
-		len += snprintf(buffer + len, sizeof(buffer) - len, "%s%s", f++ ? "," : "", #x); \
+		len += scnprintf(buffer + len, sizeof(buffer) - len, "%s%s", f++ ? "," : "", #x); \
 } while (0)
 		int f = 0;
 		printmode(PCSPP);