From 19bc4e05fa9600a62051de637d0b1fda5585da64 Mon Sep 17 00:00:00 2001 From: Sean Young Date: Tue, 7 Mar 2017 17:01:48 -0300 Subject: [PATCH] [media] staging: sir: use usleep_range() rather than busy looping usleep_range() is perfect for this. Signed-off-by: Sean Young Signed-off-by: Mauro Carvalho Chehab --- drivers/staging/media/lirc/lirc_sir.c | 17 +---------------- 1 file changed, 1 insertion(+), 16 deletions(-) diff --git a/drivers/staging/media/lirc/lirc_sir.c b/drivers/staging/media/lirc/lirc_sir.c index 1362900f2ec4..e21f163026d8 100644 --- 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) -- 2.11.0