diff options
Diffstat (limited to 'drivers/mfd/wm8350-core.c')
| -rw-r--r-- | drivers/mfd/wm8350-core.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/mfd/wm8350-core.c b/drivers/mfd/wm8350-core.c index bd75807d5302..b5807484b4c9 100644 --- a/drivers/mfd/wm8350-core.c +++ b/drivers/mfd/wm8350-core.c @@ -15,6 +15,7 @@ #include <linux/kernel.h> #include <linux/module.h> #include <linux/init.h> +#include <linux/slab.h> #include <linux/bug.h> #include <linux/device.h> #include <linux/delay.h> @@ -362,6 +363,10 @@ int wm8350_read_auxadc(struct wm8350 *wm8350, int channel, int scale, int vref) reg |= 1 << channel | WM8350_AUXADC_POLL; wm8350_reg_write(wm8350, WM8350_DIGITISER_CONTROL_1, reg); + /* If a late IRQ left the completion signalled then consume + * the completion. */ + try_wait_for_completion(&wm8350->auxadc_done); + /* We ignore the result of the completion and just check for a * conversion result, allowing us to soldier on if the IRQ * infrastructure is not set up for the chip. */ |