From c89099641ee2a8a33d9a92e11751915472e249ff Mon Sep 17 00:00:00 2001 From: Martin Roth Date: Mon, 21 Dec 2015 13:14:58 -0700 Subject: soc/intel/fsp_baytrail: Make sure i2c bus is < 7 Baytrail has I2c Busses 0 to 6, so is supposed to error out if the I2c driver is called with 7 or greater. Due to an off-by-one error it could be called with bus 7. Fixes coverity warning: CID 1287074 (#1 of 1): Out-of-bounds read (OVERRUN) 3. overrun-local: Overrunning array base_adr of 7 4-byte elements at element index 7 (byte offset 28) using index bus (which evaluates to 7). Change-Id: I7caec60298cf27bd669796e0e05e4a896f92befd Signed-off-by: Martin Roth Reviewed-on: https://review.coreboot.org/12781 Tested-by: build bot (Jenkins) Reviewed-by: Werner Zeh --- src/soc/intel/fsp_baytrail/i2c.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'src/soc') diff --git a/src/soc/intel/fsp_baytrail/i2c.c b/src/soc/intel/fsp_baytrail/i2c.c index 6cf07a4d67..c6c8f65721 100644 --- a/src/soc/intel/fsp_baytrail/i2c.c +++ b/src/soc/intel/fsp_baytrail/i2c.c @@ -102,7 +102,7 @@ int i2c_init(unsigned bus) I2C6_MEM_BASE}; char *base_ptr; /* Ensure the desired device is valid */ - if (bus > ARRAY_SIZE(base_adr)) { + if (bus >= ARRAY_SIZE(base_adr)) { printk(BIOS_ERR, "I2C: Only I2C controllers 0...6 are available.\n"); return I2C_ERR; } -- cgit v1.2.3