Commit 996cadb2 authored by Hans de Goede's avatar Hans de Goede Committed by Jean Delvare
Browse files

hwmon: (f71882fg) Sanity check f8000 pwm settings 



We depend up on the pwm_enable register (0x96) not containing any reserved
settings in various places. We were already checking to make sure there
were no reserved settings in the register for the f71862fg, this patch adds
the same checking for the f8000, while at it it also moves the code to
a more apropriate place so we don't need to check if the fan/pwm part
of the IC is enabled twice.

Signed-off-by: default avatarHans de Goede <hdegoede@redhat.com>
Signed-off-by: default avatarJean Delvare <khali@linux-fr.org>
parent 3fc7838a

drivers/hwmon/f71882fg.c

+23 −13
Original line number Diff line number Diff line
@@ -1735,19 +1735,6 @@ static int __devinit f71882fg_probe(struct platform_device *pdev) 
		goto exit_free;

	}



	data->pwm_enable = f71882fg_read8(data, F71882FG_REG_PWM_ENABLE);

	/* If it is a 71862 and the fan / pwm part is enabled sanity check

	   the pwm settings */

	if (data->type == f71862fg && (start_reg & 0x02)) {

		if ((data->pwm_enable & 0x15) != 0x15) {

			dev_err(&pdev->dev,

				"Invalid (reserved) pwm settings: 0x%02x\n",

				(unsigned int)data->pwm_enable);

			err = -ENODEV;

			goto exit_free;

		}

	}



	/* Register sysfs interface files */

	err = device_create_file(&pdev->dev, &dev_attr_name);

	if (err)
@@ -1778,6 +1765,29 @@ static int __devinit f71882fg_probe(struct platform_device *pdev) 
	}



	if (start_reg & 0x02) {

		data->pwm_enable =

			f71882fg_read8(data, F71882FG_REG_PWM_ENABLE);



		/* Sanity check the pwm settings */

		switch (data->type) {

		case f71862fg:

			err = (data->pwm_enable & 0x15) != 0x15;

			break;

		case f71882fg:

			err = 0;

			break;

		case f8000:

			err = data->pwm_enable & 0x20;

			break;

		}

		if (err) {

			dev_err(&pdev->dev,

				"Invalid (reserved) pwm settings: 0x%02x\n",

				(unsigned int)data->pwm_enable);

			err = -ENODEV;

			goto exit_unregister_sysfs;

		}



		err = f71882fg_create_sysfs_files(pdev, fxxxx_fan_attr,

					ARRAY_SIZE(fxxxx_fan_attr));

		if (err)

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