@@ -118,50 +118,32 @@ static const s32 stv0367cab_RF_LookUp2[RF_LOOKUP_TABLE2_SIZE][RF_LOOKUP_TABLE2_S
}
};
-static
-int stv0367_writeregs(struct stv0367_state *state, u16 reg, u8 *data, int len)
+static noinline_for_stack
+int stv0367_writereg(struct stv0367_state *state, u16 reg, u8 data)
{
- u8 buf[MAX_XFER_SIZE];
+ u8 buf[3] = { MSB(reg), LSB(reg), data };
struct i2c_msg msg = {
.addr = state->config->demod_address,
.flags = 0,
.buf = buf,
- .len = len + 2
+ .len = 3,
};
int ret;
- if (2 + len > sizeof(buf)) {
- printk(KERN_WARNING
- "%s: i2c wr reg=%04x: len=%d is too big!\n",
- KBUILD_MODNAME, reg, len);
- return -EINVAL;
- }
-
-
- buf[0] = MSB(reg);
- buf[1] = LSB(reg);
- memcpy(buf + 2, data, len);
-
if (i2cdebug)
printk(KERN_DEBUG "%s: [%02x] %02x: %02x\n", __func__,
- state->config->demod_address, reg, buf[2]);
+ state->config->demod_address, reg, data);
ret = i2c_transfer(state->i2c, &msg, 1);
if (ret != 1)
printk(KERN_ERR "%s: i2c write error! ([%02x] %02x: %02x)\n",
- __func__, state->config->demod_address, reg, buf[2]);
+ __func__, state->config->demod_address, reg, data);
return (ret != 1) ? -EREMOTEIO : 0;
}
-static int stv0367_writereg(struct stv0367_state *state, u16 reg, u8 data)
-{
- u8 tmp = data; /* see gcc.gnu.org/bugzilla/show_bug.cgi?id=81715 */
-
- return stv0367_writeregs(state, reg, &tmp, 1);
-}
-
-static u8 stv0367_readreg(struct stv0367_state *state, u16 reg)
+static noinline_for_stack
+u8 stv0367_readreg(struct stv0367_state *state, u16 reg)
{
u8 b0[] = { 0, 0 };
u8 b1[] = { 0 };