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[media] staging: sir: use usleep_range() rather than busy looping

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usleep_range() is perfect for this.

Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Sean Young 2017-03-07 17:01:48 -03:00 committed by Mauro Carvalho Chehab
parent 43371f6b32
commit 19bc4e05fa
1 changed files with 1 additions and 16 deletions
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17
drivers/staging/media/lirc/lirc_sir.c
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@ -76,21 +76,6 @@ static inline void soutp(int offset, int value)
outb(value, io + offset);
}
#ifndef MAX_UDELAY_MS
#define MAX_UDELAY_US 5000
#else
#define MAX_UDELAY_US (MAX_UDELAY_MS * 1000)
#endif
static void safe_udelay(unsigned long usecs)
{
while (usecs > MAX_UDELAY_US) {
udelay(MAX_UDELAY_US);
usecs -= MAX_UDELAY_US;
}
udelay(usecs);
}
/* SECTION: Communication with user-space */
static int sir_tx_ir(struct rc_dev *dev, unsigned int *tx_buf,
unsigned int count)
@ -281,7 +266,7 @@ static irqreturn_t sir_interrupt(int irq, void *dev_id)
static void send_space(unsigned long len)
{
safe_udelay(len);
usleep_range(len, len + 25);
}
static void send_pulse(unsigned long len)