[media] m88ds3103: do not use dynamic stack allocation
I2C transfer were using dynamic stack allocation. Get rid of it. Signed-off-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
This commit is contained in:
Родитель
050ae82c35
Коммит
63c80f7043
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@ -26,17 +26,22 @@ static struct dvb_frontend_ops m88ds3103_ops;
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static int m88ds3103_wr_regs(struct m88ds3103_priv *priv,
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u8 reg, const u8 *val, int len)
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{
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#define MAX_WR_LEN 32
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#define MAX_WR_XFER_LEN (MAX_WR_LEN + 1)
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int ret;
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u8 buf[1 + len];
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u8 buf[MAX_WR_XFER_LEN];
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struct i2c_msg msg[1] = {
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{
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.addr = priv->cfg->i2c_addr,
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.flags = 0,
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.len = sizeof(buf),
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.len = 1 + len,
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.buf = buf,
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}
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};
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if (WARN_ON(len > MAX_WR_LEN))
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return -EINVAL;
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buf[0] = reg;
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memcpy(&buf[1], val, len);
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@ -59,8 +64,10 @@ static int m88ds3103_wr_regs(struct m88ds3103_priv *priv,
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static int m88ds3103_rd_regs(struct m88ds3103_priv *priv,
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u8 reg, u8 *val, int len)
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{
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#define MAX_RD_LEN 3
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#define MAX_RD_XFER_LEN (MAX_RD_LEN)
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int ret;
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u8 buf[len];
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u8 buf[MAX_RD_XFER_LEN];
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struct i2c_msg msg[2] = {
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{
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.addr = priv->cfg->i2c_addr,
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@ -70,11 +77,14 @@ static int m88ds3103_rd_regs(struct m88ds3103_priv *priv,
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}, {
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.addr = priv->cfg->i2c_addr,
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.flags = I2C_M_RD,
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.len = sizeof(buf),
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.len = len,
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.buf = buf,
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}
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};
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if (WARN_ON(len > MAX_RD_LEN))
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return -EINVAL;
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mutex_lock(&priv->i2c_mutex);
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ret = i2c_transfer(priv->i2c, msg, 2);
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mutex_unlock(&priv->i2c_mutex);
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