diff options
Diffstat (limited to 'drivers/mfd/wm831x-auxadc.c')
| -rw-r--r-- | drivers/mfd/wm831x-auxadc.c | 43 |
1 files changed, 18 insertions, 25 deletions
diff --git a/drivers/mfd/wm831x-auxadc.c b/drivers/mfd/wm831x-auxadc.c index 65b98f3fbd..18618a8f92 100644 --- a/drivers/mfd/wm831x-auxadc.c +++ b/drivers/mfd/wm831x-auxadc.c @@ -152,7 +152,7 @@ static irqreturn_t wm831x_auxadc_irq(int irq, void *irq_data) static int wm831x_auxadc_read_polled(struct wm831x *wm831x, enum wm831x_auxadc input) { - int ret, src, timeout; + int ret, src; mutex_lock(&wm831x->auxadc_lock); @@ -179,32 +179,25 @@ static int wm831x_auxadc_read_polled(struct wm831x *wm831x, goto disable; } - /* If we're not using interrupts then poll the - * interrupt status register */ - timeout = 5; - while (timeout) { - msleep(1); + /* If we're not using interrupts then read the interrupt status register */ + msleep(20); - ret = wm831x_reg_read(wm831x, - WM831X_INTERRUPT_STATUS_1); - if (ret < 0) { - dev_err(wm831x->dev, - "ISR 1 read failed: %d\n", ret); - goto disable; - } + ret = wm831x_reg_read(wm831x, WM831X_INTERRUPT_STATUS_1); + if (ret < 0) { + dev_err(wm831x->dev, + "ISR 1 read failed: %d\n", ret); + goto disable; + } - /* Did it complete? */ - if (ret & WM831X_AUXADC_DATA_EINT) { - wm831x_reg_write(wm831x, - WM831X_INTERRUPT_STATUS_1, - WM831X_AUXADC_DATA_EINT); - break; - } else { - dev_err(wm831x->dev, - "AUXADC conversion timeout\n"); - ret = -EBUSY; - goto disable; - } + /* Did it complete? */ + if (ret & WM831X_AUXADC_DATA_EINT) { + wm831x_reg_write(wm831x, WM831X_INTERRUPT_STATUS_1, + WM831X_AUXADC_DATA_EINT); + } else { + dev_err(wm831x->dev, + "AUXADC conversion timeout\n"); + ret = -EBUSY; + goto disable; } ret = wm831x_reg_read(wm831x, WM831X_AUXADC_DATA); |