From 11b9a4d8d96674a57ff61ce622b0900ebee1392d Mon Sep 17 00:00:00 2001 From: Stephen Warren Date: Mon, 4 Apr 2016 11:03:52 -0600 Subject: sf: fix timebase data type in _wait_ready() get_timer() returns an unsigned 64-bit value, but is currently assigned to a signed 32-bit variable. Due to sign extension and data truncation, this causes the timeout loop in spi_flash_cmd_wait_ready() to immediately (and incorrectly) fire for about 50% of all time values, based on whether bit 31 is set. In sandbox at least, this causes the test to pass or fail based on system uptime, as opposed to time since the U-Boot binary was started. Fixes: 4efad20a1751 ("sf: Update status reg check in spi_flash_cmd_wait_ready") Signed-off-by: Stephen Warren Reviewed-by: Tom Rini Reviewed-by: Jagan Teki --- drivers/mtd/spi/spi_flash.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers/mtd/spi') diff --git a/drivers/mtd/spi/spi_flash.c b/drivers/mtd/spi/spi_flash.c index 44d9e9b..5451725 100644 --- a/drivers/mtd/spi/spi_flash.c +++ b/drivers/mtd/spi/spi_flash.c @@ -265,7 +265,8 @@ static int spi_flash_ready(struct spi_flash *flash) static int spi_flash_cmd_wait_ready(struct spi_flash *flash, unsigned long timeout) { - int timebase, ret; + unsigned long timebase; + int ret; timebase = get_timer(0); -- cgit v1.1