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rivers/rwbuffer.c: Don't queue work to flush write buffer if CONFIG_DRVR_WRDELAY == 0

This commit is contained in:
Xiang Xiao 2018-11-09 08:08:18 -06:00 committed by Gregory Nutt
parent ec70aa86a6
commit 44c9728a60
1 changed files with 10 additions and 6 deletions
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16
drivers/rwbuffer.c
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@ -63,14 +63,14 @@
/* Configuration ************************************************************/
#ifndef CONFIG_SCHED_WORKQUEUE
# error "Worker thread support is required (CONFIG_SCHED_WORKQUEUE)"
#endif
#ifndef CONFIG_DRVR_WRDELAY
# define CONFIG_DRVR_WRDELAY 350
#endif
#if !defined(CONFIG_SCHED_WORKQUEUE) && CONFIG_DRVR_WRDELAY != 0
# error "Worker thread support is required (CONFIG_SCHED_WORKQUEUE)"
#endif
/****************************************************************************
* Private Types
****************************************************************************/
@ -195,7 +195,7 @@ static void rwb_wrflush(struct rwbuffer_s *rwb)
* Name: rwb_wrtimeout
****************************************************************************/
#ifdef CONFIG_DRVR_WRITEBUFFER
#if defined(CONFIG_DRVR_WRITEBUFFER) && CONFIG_DRVR_WRDELAY != 0
static void rwb_wrtimeout(FAR void *arg)
{
/* The following assumes that the size of a pointer is 4-bytes or less */
@ -221,12 +221,14 @@ static void rwb_wrtimeout(FAR void *arg)
#ifdef CONFIG_DRVR_WRITEBUFFER
static void rwb_wrstarttimeout(FAR struct rwbuffer_s *rwb)
{
#if CONFIG_DRVR_WRDELAY != 0
/* CONFIG_DRVR_WRDELAY provides the delay period in milliseconds. CLK_TCK
* provides the clock tick of the system (frequency in Hz).
*/
int ticks = (CONFIG_DRVR_WRDELAY + CLK_TCK/2) / CLK_TCK;
int ticks = MSEC2TICK(CONFIG_DRVR_WRDELAY);
(void)work_queue(LPWORK, &rwb->work, rwb_wrtimeout, (FAR void *)rwb, ticks);
#endif
}
#endif
@ -237,7 +239,9 @@ static void rwb_wrstarttimeout(FAR struct rwbuffer_s *rwb)
#ifdef CONFIG_DRVR_WRITEBUFFER
static inline void rwb_wrcanceltimeout(struct rwbuffer_s *rwb)
{
#if CONFIG_DRVR_WRDELAY != 0
(void)work_cancel(LPWORK, &rwb->work);
#endif
}
#endif