X-Git-Url: http://pileus.org/git/?a=blobdiff_plain;f=drivers%2Fgpu%2Fdrm%2Fradeon%2Fatombios_i2c.c;h=0652ee0a20989db0b69f816d45e17f9354e5ca8a;hb=ded5107e2a347657cdd00abb9354b62d5ab8f770;hp=deaf98cdca3acb80300b889b61ddf5a7f83d20b8;hpb=cf596766fc53bbfa0e2b21e3569932aa54f5f9ca;p=~andy%2Flinux

diff --git a/drivers/gpu/drm/radeon/atombios_i2c.c b/drivers/gpu/drm/radeon/atombios_i2c.c
index deaf98cdca3..0652ee0a209 100644
--- a/drivers/gpu/drm/radeon/atombios_i2c.c
+++ b/drivers/gpu/drm/radeon/atombios_i2c.c
@@ -56,8 +56,10 @@ static int radeon_process_i2c_ch(struct radeon_i2c_chan *chan,
 			return -EINVAL;
 		}
 		args.ucRegIndex = buf[0];
-		if (num > 1)
-			memcpy(&out, &buf[1], num - 1);
+		if (num > 1) {
+			num--;
+			memcpy(&out, &buf[1], num);
+		}
 		args.lpI2CDataOut = cpu_to_le16(out);
 	} else {
 		if (num > ATOM_MAX_HW_I2C_READ) {