From 22d6c8faac4e9fa43232b0cf4da427ec14d72ad3 Mon Sep 17 00:00:00 2001 From: Thomas Chou Date: Thu, 1 Apr 2010 11:15:05 +0800 Subject: cfi_flash: reset timer in flash status check This patch adds reset_timer() before the flash status check waiting loop. Since the timer is basically running asynchronous to the cfi code, it is possible to call get_timer(0), then only a few _SYSCLK_ cycles later an interrupt is generated. This causes timeout even though much less time has elapsed. So the timer period registers should be reset before get_timer(0) is called. There is similar usage in nand_base.c. Signed-off-by: Thomas Chou Signed-off-by: Stefan Roese --- drivers/mtd/cfi_flash.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers') diff --git a/drivers/mtd/cfi_flash.c b/drivers/mtd/cfi_flash.c index d0240f55d4..3267c5de36 100644 --- a/drivers/mtd/cfi_flash.c +++ b/drivers/mtd/cfi_flash.c @@ -544,6 +544,7 @@ static int flash_status_check (flash_info_t * info, flash_sect_t sector, #endif /* Wait for command completion */ + reset_timer(); start = get_timer (0); while (flash_is_busy (info, sector)) { if (get_timer (start) > tout) { @@ -630,6 +631,7 @@ static int flash_status_poll(flash_info_t *info, void *src, void *dst, #endif /* Wait for command completion */ + reset_timer(); start = get_timer(0); while (1) { switch (info->portwidth) { -- cgit v1.2.1