[U-Boot] [PATCH] mmc: fix wrong timeout check in mmc_send_status()

[Jongman Heo]

(!timeout) condition check in mmc_send_status() can never be met,
because do-while loop ends up with negative timeout value, -1.

Fix it by using pre-decrement.

Signed-off-by: Jongman Heo <jongman.heo at gmail.com>
---
 drivers/mmc/mmc.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c
index aebe578..de19d4e 100644
--- a/drivers/mmc/mmc.c
+++ b/drivers/mmc/mmc.c
@@ -232,7 +232,7 @@ int mmc_send_status(struct mmc *mmc, int timeout)

 		udelay(1000);

-	} while (timeout--);
+	} while (--timeout);

 #ifdef CONFIG_MMC_TRACE
 	status = (cmd.response[0] & MMC_STATUS_CURR_STATE) >> 9;
-- 
1.7.7.6