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authorJean Delvare <khali@linux-fr.org>2008-02-06 01:38:41 -0800
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2008-02-06 10:41:13 -0800
commit037e291cc77a4beb0379a8c74e3d82e49a476b84 (patch)
treeda5ab620aab7dc37e2b27e28e333a8275bc7e9a1 /drivers/rtc
parent09b6bdb3b6a95fe270107c2831e033f9cb233d2d (diff)
downloadop-kernel-dev-037e291cc77a4beb0379a8c74e3d82e49a476b84.zip
op-kernel-dev-037e291cc77a4beb0379a8c74e3d82e49a476b84.tar.gz
rtc-pcf8583: Don't abuse I2C_M_NOSTART
The rtc-pcf8583 driver is using the I2C_M_NOSTART flag but shouldn't. This flag is only meant for broken chips and the PCF8583 RTC chip is not one of these. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Alessandro Zummo <a.zummo@towertech.it> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/rtc')
-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 c973ba9..8b39970 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)
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)
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