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Date: Tue, 26 Feb 2013 10:23:40 -0800 From: Guenter Roeck <linux@...ck-us.net> To: Jean Delvare <khali@...ux-fr.org> Cc: lm-sensors@...sensors.org, linux-kernel@...r.kernel.org, Guenter Roeck <linux@...ck-us.net> Subject: [PATCH 12/12] hwmon: (nct6775) Only report VID if supported and enabled VID is not always enabled (NCT6775, NCT6776) or supported (NCT6779). Signed-off-by: Guenter Roeck <linux@...ck-us.net> --- drivers/hwmon/nct6775.c | 30 ++++++++++++++++++++++++------ 1 file changed, 24 insertions(+), 6 deletions(-) diff --git a/drivers/hwmon/nct6775.c b/drivers/hwmon/nct6775.c index a4b076a..aeeb0a1 100644 --- a/drivers/hwmon/nct6775.c +++ b/drivers/hwmon/nct6775.c @@ -3398,6 +3398,8 @@ static int nct6775_probe(struct platform_device *pdev) const u16 *reg_temp, *reg_temp_over, *reg_temp_hyst, *reg_temp_config; const u16 *reg_temp_alternate, *reg_temp_crit; int num_reg_temp; + bool have_vid = false; + u8 cr2a; res = platform_get_resource(pdev, IORESOURCE_IO, 0); if (!devm_request_region(&pdev->dev, res->start, IOREGION_LENGTH, @@ -3766,17 +3768,31 @@ static int nct6775_probe(struct platform_device *pdev) /* Initialize the chip */ nct6775_init_device(data); - data->vrm = vid_which_vrm(); err = superio_enter(sio_data->sioreg); if (err) return err; + cr2a = superio_inb(sio_data->sioreg, 0x2a); + switch (data->kind) { + case nct6775: + have_vid = (cr2a & 0x40); + break; + case nct6776: + have_vid = (cr2a & 0x60) == 0x40; + break; + case nct6779: + break; + } + /* * Read VID value * We can get the VID input values directly at logical device D 0xe3. */ - superio_select(sio_data->sioreg, NCT6775_LD_VID); - data->vid = superio_inb(sio_data->sioreg, 0xe3); + if (have_vid) { + superio_select(sio_data->sioreg, NCT6775_LD_VID); + data->vid = superio_inb(sio_data->sioreg, 0xe3); + data->vrm = vid_which_vrm(); + } if (fan_debounce) { u8 tmp; @@ -3801,9 +3817,11 @@ static int nct6775_probe(struct platform_device *pdev) superio_exit(sio_data->sioreg); - err = device_create_file(dev, &dev_attr_cpu0_vid); - if (err) - return err; + if (have_vid) { + err = device_create_file(dev, &dev_attr_cpu0_vid); + if (err) + return err; + } err = nct6775_check_fan_inputs(sio_data, data); if (err) -- 1.7.9.7 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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