usleep_ranges is backed by hrtimers - for a delay of 50ms notably in a loop using a hrtimer is of no benefit and msleep() should be fine here (see Documentation/timers/timers-howto.txt). Signed-off-by: Nicholas Mc Guire <hofrat@xxxxxxxxxxx> --- Problem located with an experimental coccinelle script Patch was compile tested with: x86_64_defconfig + SPI=y, NFC=y, NFC_DIGITAL=y, NFC_ST95HF=m Patch is against 5.1-rc3 (localversion-next is -next-20190408) drivers/nfc/st95hf/core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/nfc/st95hf/core.c b/drivers/nfc/st95hf/core.c index a50a95c..34bf1d7 100644 --- a/drivers/nfc/st95hf/core.c +++ b/drivers/nfc/st95hf/core.c @@ -535,7 +535,7 @@ static int st95hf_por_sequence(struct st95hf_context *st95context) st95hf_send_spi_reset_sequence(st95context); /* delay of 50 milisecond */ - usleep_range(50000, 51000); + msleep(50); } while (nth_attempt++ < 3); return -ETIMEDOUT; -- 2.1.4
