On Wed, Nov 29, 2017 at 06:07:53PM +0200, Mikko Perttunen wrote:
> On 11/29/2017 06:00 PM, Joshua Abraham wrote:
> > Signed-off-by: Joshua Abraham <j.abraham1776@xxxxxxxxx>
> >
> > This patch fixes the issue:
> >
> > CHECK: usleep_range is preferred over udelay; see
> > Documentation/timers/timers-howto.txt
> >
> > ---
> > drivers/staging/nvec/nvec.c | 2 +-
> > 1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/drivers/staging/nvec/nvec.c b/drivers/staging/nvec/nvec.c
> > index 4ff8f47385da..2a01ef4b54ff 100644
> > --- a/drivers/staging/nvec/nvec.c
> > +++ b/drivers/staging/nvec/nvec.c
> > @@ -631,7 +631,7 @@ static irqreturn_t nvec_interrupt(int irq, void *dev)
> > break;
> > case 2: /* first byte after command */
> > if (status == (I2C_SL_IRQ | RNW | RCVD)) {
> > - udelay(33);
> > + usleep_range(30, 35);
> > if (nvec->rx->data[0] != 0x01) {
> > dev_err(nvec->dev,
> > "Read without prior read command\n");
> >
>
> This is incorrect, as this function is an interrupt handler and we cannot
> sleep in interrupt context.
>
> Cheers,
> Mikko
My mistake. Thank you for the feedback!
-Josh
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