From 64b3d6d11948cc71ff12124dcb693392a32f1bf4 Mon Sep 17 00:00:00 2001 From: Jean Delvare Date: Wed, 18 Jun 2008 14:46:27 +0200 Subject: [PATCH] USB: ohci-pnx4008: I2C cleanups and fixes 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 Cc: Vitaly Wool Cc: David Brownell Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ohci-pnx4008.c | 26 ++++++++++++-------------- 1 file changed, 12 insertions(+), 14 deletions(-) diff --git a/drivers/usb/host/ohci-pnx4008.c b/drivers/usb/host/ohci-pnx4008.c index 7062ab5..6ad8f2f 100644 --- a/drivers/usb/host/ohci-pnx4008.c +++ b/drivers/usb/host/ohci-pnx4008.c @@ -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]; -- 2.7.4