From 54dd77a5f83a0d923e62b782104d69a769f59dbe Mon Sep 17 00:00:00 2001 From: Amaury Pouly Date: Wed, 23 Apr 2014 23:43:27 +0200 Subject: imx233: fix sdmmc driver bug when sector count is 0 Since the driver will read count-1 sectors, this will stuck the card. Change-Id: Ib80484044acd1fad2914d3ffeb3940a13d2480c4 --- firmware/target/arm/imx233/sdmmc-imx233.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'firmware') diff --git a/firmware/target/arm/imx233/sdmmc-imx233.c b/firmware/target/arm/imx233/sdmmc-imx233.c index dbca78be79..e42842d3f7 100644 --- a/firmware/target/arm/imx233/sdmmc-imx233.c +++ b/firmware/target/arm/imx233/sdmmc-imx233.c @@ -596,6 +596,9 @@ static int __xfer_sectors(int drive, unsigned long start, int count, void *buf, static int transfer_sectors(int drive, unsigned long start, int count, void *buf, bool read) { int ret = 0; + // the function doesn't work when count is 0 + if(count == 0) + return ret; /* update disk activity */ disk_last_activity[drive] = current_tick; -- cgit v1.2.3