X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=drivers%2Frtc%2Frtc-pcf8583.c;h=8b3997007506bbc44a0205e586acfd8f75e042ae;hb=99109301d103fbf0de43fc5a580a406c12a501e0;hp=d48b033745868bb28f801b957dc874d3328acd78;hpb=c207908fcc451e31d7fbba31541bd04f93787eb4;p=linux-2.6-omap-h63xx.git

diff --git a/drivers/rtc/rtc-pcf8583.c b/drivers/rtc/rtc-pcf8583.c
index d48b0337458..8b399700750 100644
--- a/drivers/rtc/rtc-pcf8583.c
+++ b/drivers/rtc/rtc-pcf8583.c
@@ -40,7 +40,7 @@ struct pcf8583 {
 #define CTRL_ALARM	0x02
 #define CTRL_TIMER	0x01
 
-static unsigned short normal_i2c[] = { 0x50, I2C_CLIENT_END };
+static const unsigned short normal_i2c[] = { 0x50, I2C_CLIENT_END };
 
 /* Module parameters */
 I2C_CLIENT_INSMOD;
@@ -163,27 +163,17 @@ static int pcf8583_read_mem(struct i2c_client *client, struct rtc_mem *mem)
 
 static int pcf8583_write_mem(struct i2c_client *client, struct rtc_mem *mem)
 {
-	unsigned char addr[1];
-	struct i2c_msg msgs[2] = {
-		{
-			.addr = client->addr,
-			.flags = 0,
-			.len = 1,
-			.buf = addr,
-		}, {
-			.addr = client->addr,
-			.flags = I2C_M_NOSTART,
-			.len = mem->nr,
-			.buf = mem->data,
-		}
-	};
+	unsigned char buf[9];
+	int ret;
 
-	if (mem->loc < 8)
+	if (mem->loc < 8 || mem->nr > 8)
 		return -EINVAL;
 
-	addr[0] = mem->loc;
+	buf[0] = mem->loc;
+	memcpy(buf + 1, mem->data, mem->nr);
 
-	return i2c_transfer(client->adapter, msgs, 2) == 2 ? 0 : -EIO;
+	ret = i2c_master_send(client, buf, mem->nr + 1);
+	return ret == mem->nr + 1 ? 0 : -EIO;
 }
 
 static int pcf8583_rtc_read_time(struct device *dev, struct rtc_time *tm)
@@ -332,6 +322,9 @@ static int pcf8583_probe(struct i2c_adapter *adap, int addr, int kind)
 		}
 	};
 
+	if (!i2c_check_functionality(adap, I2C_FUNC_I2C))
+		return 0;
+
 	pcf = kzalloc(sizeof(*pcf), GFP_KERNEL);
 	if (!pcf)
 		return -ENOMEM;