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USB: ohci-pnx4008: I2C cleanups and fixes

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Various cleanups and fixes to the i2c code in ohci-pnx4008:
* Delete empty isp1301_command. The i2c driver command implementation
  is optional, so there's no point in providing an empty
  implementation.
* Give a name to isp1301_driver. I'm surprised that i2c-core accepted
  to register this driver at all. I've chosen "isp1301_pnx" as the
  name, because it's not a generic ISP1301 driver (much like the
  isp1301_omap driver.) We might want to make the name even more
  specific (but "isp1301_ohci_pnx4008" doesn't fit.)
* The ISP1301 is definitely not a hardware monitoring device.
* Fix a memory leak on failure in isp1301_attach. If
  i2c_attach_client fails, the client is not registered so
  isp1301_detach is never called and the i2c_client memory is lost.
* Use strlcpy instead of strcpy.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Vitaly Wool <vitalywool@gmail.com>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Jean Delvare 2008-06-18 14:46:27 +02:00 committed by Greg Kroah-Hartman
parent 71be4f81e9
commit 64b3d6d119
1 changed files with 12 additions and 14 deletions
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26
drivers/usb/host/ohci-pnx4008.c
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@ -109,8 +109,6 @@ static struct clk *usb_clk;
static int isp1301_probe(struct i2c_adapter *adap);
static int isp1301_detach(struct i2c_client *client);
static int isp1301_command(struct i2c_client *client, unsigned int cmd,
void *arg);
static const unsigned short normal_i2c[] =
{ ISP1301_I2C_ADDR, ISP1301_I2C_ADDR + 1, I2C_CLIENT_END };
@ -123,30 +121,37 @@ static struct i2c_client_address_data addr_data = {
};
struct i2c_driver isp1301_driver = {
.class = I2C_CLASS_HWMON,
.driver = {
.name = "isp1301_pnx",
},
.attach_adapter = isp1301_probe,
.detach_client = isp1301_detach,
.command = isp1301_command
};
static int isp1301_attach(struct i2c_adapter *adap, int addr, int kind)
{
struct i2c_client *c;
int err;
c = kzalloc(sizeof(*c), GFP_KERNEL);
if (!c)
return -ENOMEM;
strcpy(c->name, "isp1301");
strlcpy(c->name, "isp1301_pnx", I2C_NAME_SIZE);
c->flags = 0;
c->addr = addr;
c->adapter = adap;
c->driver = &isp1301_driver;
err = i2c_attach_client(c);
if (err) {
kfree(c);
return err;
}
isp1301_i2c_client = c;
return i2c_attach_client(c);
return 0;
}
static int isp1301_probe(struct i2c_adapter *adap)
@ -161,13 +166,6 @@ static int isp1301_detach(struct i2c_client *client)
return 0;
}
/* No commands defined */
static int isp1301_command(struct i2c_client *client, unsigned int cmd,
void *arg)
{
return 0;
}
static void i2c_write(u8 buf, u8 subaddr)
{
char tmpbuf[2];