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staging: dgnc: replace udelay with usleep_range 

Fix checkpatch warning on dgnc_cls.c: CHECK usleep_range is preferred
over udelay. udelay(t) in function cls_uart_init is within non-atomic
context and can be safely replaced by usleep_range(t, t + delta) where
delta is t (as t is between 10 and 20 microseconds).

Signed-off-by: Aishwarya Pant <aishpant@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
hifive-unleashed-5.1
Aishwarya Pant 2017-02-27 22:31:39 +05:30 committed by Greg Kroah-Hartman
parent 4bc58d1675
commit 5e38c984db
1 changed files with 1 additions and 1 deletions
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drivers/staging/dgnc/dgnc_cls.c
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@ -1096,7 +1096,7 @@ static void cls_uart_init(struct channel_t *ch)
writeb(UART_FCR_ENABLE_FIFO | UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT,
&ch->ch_cls_uart->isr_fcr);
udelay(10);
usleep_range(10, 20);
ch->ch_flags |= (CH_FIFO_ENABLED | CH_TX_FIFO_EMPTY | CH_TX_FIFO_LWM);