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path: root/drivers/rtc/rtc-pcf8583.c
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Diffstat (limited to 'drivers/rtc/rtc-pcf8583.c')
-rw-r--r--drivers/rtc/rtc-pcf8583.c24
1 files changed, 7 insertions, 17 deletions
diff --git a/drivers/rtc/rtc-pcf8583.c b/drivers/rtc/rtc-pcf8583.c
index c973ba94c422..8b3997007506 100644
--- a/drivers/rtc/rtc-pcf8583.c
+++ b/drivers/rtc/rtc-pcf8583.c
@@ -163,27 +163,17 @@ static int pcf8583_read_mem(struct i2c_client *client, struct rtc_mem *mem)
163 163
164static int pcf8583_write_mem(struct i2c_client *client, struct rtc_mem *mem) 164static int pcf8583_write_mem(struct i2c_client *client, struct rtc_mem *mem)
165{ 165{
166 unsigned char addr[1]; 166 unsigned char buf[9];
167 struct i2c_msg msgs[2] = { 167 int ret;
168 {
169 .addr = client->addr,
170 .flags = 0,
171 .len = 1,
172 .buf = addr,
173 }, {
174 .addr = client->addr,
175 .flags = I2C_M_NOSTART,
176 .len = mem->nr,
177 .buf = mem->data,
178 }
179 };
180 168
181 if (mem->loc < 8) 169 if (mem->loc < 8 || mem->nr > 8)
182 return -EINVAL; 170 return -EINVAL;
183 171
184 addr[0] = mem->loc; 172 buf[0] = mem->loc;
173 memcpy(buf + 1, mem->data, mem->nr);
185 174
186 return i2c_transfer(client->adapter, msgs, 2) == 2 ? 0 : -EIO; 175 ret = i2c_master_send(client, buf, mem->nr + 1);
176 return ret == mem->nr + 1 ? 0 : -EIO;
187} 177}
188 178
189static int pcf8583_rtc_read_time(struct device *dev, struct rtc_time *tm) 179static int pcf8583_rtc_read_time(struct device *dev, struct rtc_time *tm)