diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2017-05-01 11:50:57 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-05-01 11:50:57 -0700 |
commit | cdbfbba98c151886a8e74116fbd8ba14e8200cb4 (patch) | |
tree | 72357bf89ec83e37725bd33d1bb7882ace547e87 /drivers/hwmon/w83627ehf.c | |
parent | 89d1cf89c88f4684a51bd1f3e3aff0ae32572292 (diff) | |
parent | 09d9d82745801ca69c00f91f89c8f047b586e8cc (diff) |
Merge tag 'hwmon-for-linus-v4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
Pull hwmon updates from Guenter Roeck:
- removed twl4030-madc driver
- added ASPEED PWM/fan driver
- various minor improvements and fixes in several drivers
* tag 'hwmon-for-linus-v4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: (36 commits)
hwmon: (twl4030-madc) drop driver
hwmon: (tmp103) Use SIMPLE_DEV_PM_OPS helper macro
hwmon: (adt7475) set start bit in probe
hwmon: (ina209) Handled signed registers
hwmon: (lm87) Add OF device ID table
hwmon: (lm87) Remove unused I2C devices driver_data
drivers: hwmon: Support for ASPEED PWM/Fan tach
Documentation: dt-bindings: Document bindings for ASPEED AST2400/AST2500 PWM and Fan tach controller device driver
hwmon: (lm87) Allow channel data to be set from dts file
Documentation: dtb: lm87: Add hwmon binding documentation
hwmon: (ads7828) Accept optional parameters from device tree
hwmon: (dell-smm) Add Dell XPS 15 9560 into DMI list
hwmon: Constify str parameter of hwmon_ops->read_string
dt: Add vendor prefix for Sensirion
hwmon: (tmp421) Add OF device ID table
hwmon: (tmp103) Add OF device ID table
hwmon: (tmp102) Add OF device ID table
hwmon: (stts751) Add OF device ID table
hwmon: (ucd9200) Add OF device ID table
hwmon: (ucd9000) Add OF device ID table
...
Diffstat (limited to 'drivers/hwmon/w83627ehf.c')
-rw-r--r-- | drivers/hwmon/w83627ehf.c | 35 |
1 files changed, 24 insertions, 11 deletions
diff --git a/drivers/hwmon/w83627ehf.c b/drivers/hwmon/w83627ehf.c index ab346ed142de..ad68b6d9ff17 100644 --- a/drivers/hwmon/w83627ehf.c +++ b/drivers/hwmon/w83627ehf.c @@ -135,11 +135,16 @@ superio_select(int ioreg, int ld) outb(ld, ioreg + 1); } -static inline void +static inline int superio_enter(int ioreg) { + if (!request_muxed_region(ioreg, 2, DRVNAME)) + return -EBUSY; + outb(0x87, ioreg); outb(0x87, ioreg); + + return 0; } static inline void @@ -148,6 +153,7 @@ superio_exit(int ioreg) outb(0xaa, ioreg); outb(0x02, ioreg); outb(0x02, ioreg + 1); + release_region(ioreg, 2); } /* @@ -1970,8 +1976,6 @@ w83627ehf_check_fan_inputs(const struct w83627ehf_sio_data *sio_data, return; } - superio_enter(sio_data->sioreg); - /* fan4 and fan5 share some pins with the GPIO and serial flash */ if (sio_data->kind == nct6775) { /* On NCT6775, fan4 shares pins with the fdc interface */ @@ -2013,8 +2017,6 @@ w83627ehf_check_fan_inputs(const struct w83627ehf_sio_data *sio_data, fan4min = fan4pin; } - superio_exit(sio_data->sioreg); - data->has_fan = data->has_fan_min = 0x03; /* fan1 and fan2 */ data->has_fan |= (fan3pin << 2); data->has_fan_min |= (fan3pin << 2); @@ -2352,7 +2354,11 @@ static int w83627ehf_probe(struct platform_device *pdev) w83627ehf_init_device(data, sio_data->kind); data->vrm = vid_which_vrm(); - superio_enter(sio_data->sioreg); + + err = superio_enter(sio_data->sioreg); + if (err) + goto exit_release; + /* Read VID value */ if (sio_data->kind == w83667hg || sio_data->kind == w83667hg_b || sio_data->kind == nct6775 || sio_data->kind == nct6776) { @@ -2364,8 +2370,10 @@ static int w83627ehf_probe(struct platform_device *pdev) superio_select(sio_data->sioreg, W83667HG_LD_VID); data->vid = superio_inb(sio_data->sioreg, 0xe3); err = device_create_file(dev, &dev_attr_cpu0_vid); - if (err) + if (err) { + superio_exit(sio_data->sioreg); goto exit_release; + } } else if (sio_data->kind != w83627uhg) { superio_select(sio_data->sioreg, W83627EHF_LD_HWM); if (superio_inb(sio_data->sioreg, SIO_REG_VID_CTRL) & 0x80) { @@ -2401,8 +2409,10 @@ static int w83627ehf_probe(struct platform_device *pdev) data->vid &= 0x3f; err = device_create_file(dev, &dev_attr_cpu0_vid); - if (err) + if (err) { + superio_exit(sio_data->sioreg); goto exit_release; + } } else { dev_info(dev, "VID pins in output mode, CPU VID not available\n"); @@ -2424,10 +2434,10 @@ static int w83627ehf_probe(struct platform_device *pdev) pr_info("Enabled fan debounce for chip %s\n", data->name); } - superio_exit(sio_data->sioreg); - w83627ehf_check_fan_inputs(sio_data, data); + superio_exit(sio_data->sioreg); + /* Read fan clock dividers immediately */ w83627ehf_update_fan_div_common(dev, data); @@ -2712,8 +2722,11 @@ static int __init w83627ehf_find(int sioaddr, unsigned short *addr, u16 val; const char *sio_name; + int err; - superio_enter(sioaddr); + err = superio_enter(sioaddr); + if (err) + return err; if (force_id) val = force_id; |