diff options
Diffstat (limited to 'drivers/gpu/drm/i2c')
| -rw-r--r-- | drivers/gpu/drm/i2c/tda998x_drv.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i2c/tda998x_drv.c b/drivers/gpu/drm/i2c/tda998x_drv.c index 421c8a72369e..0068d714d1bd 100644 --- a/drivers/gpu/drm/i2c/tda998x_drv.c +++ b/drivers/gpu/drm/i2c/tda998x_drv.c @@ -466,13 +466,22 @@ out: return ret; } +#define MAX_WRITE_RANGE_BUF 32 + static void reg_write_range(struct tda998x_priv *priv, u16 reg, u8 *p, int cnt) { struct i2c_client *client = priv->hdmi; - u8 buf[cnt+1]; + /* This is the maximum size of the buffer passed in */ + u8 buf[MAX_WRITE_RANGE_BUF + 1]; int ret; + if (cnt > MAX_WRITE_RANGE_BUF) { + dev_err(&client->dev, "Fixed write buffer too small (%d)\n", + MAX_WRITE_RANGE_BUF); + return; + } + buf[0] = REG2ADDR(reg); memcpy(&buf[1], p, cnt); @@ -679,7 +688,7 @@ static void tda998x_write_if(struct tda998x_priv *priv, u8 bit, u16 addr, union hdmi_infoframe *frame) { - u8 buf[32]; + u8 buf[MAX_WRITE_RANGE_BUF]; ssize_t len; len = hdmi_infoframe_pack(frame, buf, sizeof(buf)); |