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

usleep_range() is perfect for this.

Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

diff --git a/drivers/staging/media/lirc/lirc_sir.c b/drivers/staging/media/lirc/lirc_sir.c
index 1362900..e21f163 100644 (file)
--- a/drivers/staging/media/lirc/lirc_sir.c
+++ b/drivers/staging/media/lirc/lirc_sir.c
@@ -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)