Hi Vladimir, Thank you very much for reviews.
Thanks, Vadim. > -----Original Message----- > From: Vladimir Zapolskiy [mailto:v...@mleia.com] > Sent: Monday, November 07, 2016 2:47 AM > To: Vadim Pasternak <vad...@mellanox.com>; w...@the-dreams.de > Cc: linux-...@vger.kernel.org; linux-kernel@vger.kernel.org; j...@resnulli.us; > Michael Shych <michae...@mellanox.com> > Subject: Re: [patch v4 1/1] i2c: add master driver for mellanox systems > > Hi Vadim, > > please find below some more nitpickings. > > On 11/04/2016 11:15 AM, vad...@mellanox.com wrote: > > From: Vadim Pasternak <vad...@mellanox.com> > > > > [snip] > > > diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig > > index d252276..b9e1c4c 100644 > > --- a/drivers/i2c/busses/Kconfig > > +++ b/drivers/i2c/busses/Kconfig > > @@ -1150,6 +1150,18 @@ config I2C_ELEKTOR > > This support is also available as a module. If so, the module > > will be called i2c-elektor. > > > > +config I2C_MLXCPLD > > + tristate "Mellanox I2C driver" > > + depends on X86_64 > > + default n > > Please just remove 'default n' line, unset default value in Kconfig is the > same as > 'default n'. > > [snip] > > > +/* General defines */ > > +#define MLXPLAT_CPLD_LPC_I2C_BASE_ADDR 0x2000 > > +#define MLXCPLD_I2C_DEVICE_NAME "i2c_mlxcpld" > > +#define MLXCPLD_I2C_VALID_FLAG (I2C_M_RECV_LEN | > I2C_M_RD) > > +#define MLXCPLD_I2C_BUS_NUM 1 > > +#define MLXCPLD_I2C_DATA_REG_SZ 36 > > +#define MLXCPLD_I2C_MAX_ADDR_LEN 4 > > +#define MLXCPLD_I2C_RETR_NUM 2 > > +#define MLXCPLD_I2C_XFER_TO 500000 /* msec */ > > +#define MLXCPLD_I2C_POLL_TIME 2000 /* msec */ > > Two lines above define macro values with the microsecond unit, its short form > is > denoted as "usec" and "msec" or "ms" is used to denote milliseconds. Please > correct it, transfer timeout of "500 seconds" is confusing. > > [snip] > > > + > > +static int mlxcpld_i2c_probe(struct platform_device *pdev) { > > + struct mlxcpld_i2c_priv *priv; > > + int err; > > + > > + priv = devm_kzalloc(&pdev->dev, sizeof(struct mlxcpld_i2c_priv), > > + GFP_KERNEL); > > + if (!priv) > > + return -ENOMEM; > > + > > + mutex_init(&priv->lock); > > + platform_set_drvdata(pdev, priv); > > + > > + priv->dev = &pdev->dev; > > + > > + /* Register with i2c layer */ > > + mlxcpld_i2c_adapter.timeout = > usecs_to_jiffies(MLXCPLD_I2C_XFER_TO); > > + priv->adap = mlxcpld_i2c_adapter; > > + priv->adap.dev.parent = &pdev->dev; > > + priv->base_addr = MLXPLAT_CPLD_LPC_I2C_BASE_ADDR; > > + i2c_set_adapdata(&priv->adap, priv); > > + > > + err = i2c_add_numbered_adapter(&priv->adap); > > + if (err) { > > + dev_err(&pdev->dev, "Failed to add %s adapter (%d)\n", > > + MLXCPLD_I2C_DEVICE_NAME, err); > > + goto fail_adapter; > > + } > > + > > + return 0; > > + > > +fail_adapter: > > + mutex_destroy(&priv->lock); > > + return err; > > Here you can save some more lines of code by changing it to > > err = i2c_add_numbered_adapter(&priv->adap); > if (err) > mutex_destroy(&priv->lock); > > return err; > > Note, dev_err() is not needed here, because printing of the error message is > delegated to the I2C core. > > > +} > > + > > Please feel free to add a tag to the next version: > > Reviewed-by: Vladimir Zapolskiy <v...@mleia.com> > > -- > With best wishes, > Vladimir
