V4L/DVB (7751): ir-kbd-i2c: Save a temporary memory allocation in ir_probe
Using i2c_transfer instead of i2c_master_recv in ir_probe saves a
temporary memory allocation.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
diff --git a/drivers/media/video/ir-kbd-i2c.c b/drivers/media/video/ir-kbd-i2c.c
index 11c5fde..7b65f5e 100644
--- a/drivers/media/video/ir-kbd-i2c.c
+++ b/drivers/media/video/ir-kbd-i2c.c
@@ -509,8 +509,11 @@
static const int probe_cx88[] = { 0x18, 0x6b, 0x71, -1 };
static const int probe_cx23885[] = { 0x6b, -1 };
const int *probe;
- struct i2c_client *c;
- unsigned char buf;
+ struct i2c_msg msg = {
+ .flags = I2C_M_RD,
+ .len = 0,
+ .buf = NULL,
+ };
int i, rc;
switch (adap->id) {
@@ -536,23 +539,17 @@
return 0;
}
- c = kzalloc(sizeof(*c), GFP_KERNEL);
- if (!c)
- return -ENOMEM;
-
- c->adapter = adap;
for (i = 0; -1 != probe[i]; i++) {
- c->addr = probe[i];
- rc = i2c_master_recv(c, &buf, 0);
+ msg.addr = probe[i];
+ rc = i2c_transfer(adap, &msg, 1);
dprintk(1,"probe 0x%02x @ %s: %s\n",
probe[i], adap->name,
- (0 == rc) ? "yes" : "no");
- if (0 == rc) {
+ (1 == rc) ? "yes" : "no");
+ if (1 == rc) {
ir_attach(adap, probe[i], 0, 0);
break;
}
}
- kfree(c);
return 0;
}