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SubjectRe: [PATCH] Staging: sm750fb: Fix coding style issue in ddk750_sii164.c
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On Sat, 2017-11-25 at 12:59 -0500, Jeremy Lacomis wrote:
> This is a patch to the ddk750_sii164.c file that fixes line length warnings
> found by the checkpatch.pl script
>
> Signed-off-by: Jeremy Lacomis <j.lacomis@gmail.com>
> ---
> drivers/staging/sm750fb/ddk750_sii164.c | 39 +++++++++++++++++++--------------
> 1 file changed, 23 insertions(+), 16 deletions(-)
>
> diff --git a/drivers/staging/sm750fb/ddk750_sii164.c b/drivers/staging/sm750fb/ddk750_sii164.c
> index c787a74c4f9c..d081ecbb3e3d 100644
> --- a/drivers/staging/sm750fb/ddk750_sii164.c
> +++ b/drivers/staging/sm750fb/ddk750_sii164.c
> @@ -39,8 +39,10 @@ unsigned short sii164GetVendorID(void)
> {
> unsigned short vendorID;
>
> - vendorID = ((unsigned short) i2cReadReg(SII164_I2C_ADDRESS, SII164_VENDOR_ID_HIGH) << 8) |
> - (unsigned short) i2cReadReg(SII164_I2C_ADDRESS, SII164_VENDOR_ID_LOW);
> + vendorID = ((unsigned short) i2cReadReg(SII164_I2C_ADDRESS,
> + SII164_VENDOR_ID_HIGH) << 8) |
> + (unsigned short) i2cReadReg(SII164_I2C_ADDRESS,
> + SII164_VENDOR_ID_LOW);
>
> return vendorID;
> }
> @@ -56,15 +58,20 @@ unsigned short sii164GetDeviceID(void)
> {
> unsigned short deviceID;
>
> - deviceID = ((unsigned short) i2cReadReg(SII164_I2C_ADDRESS, SII164_DEVICE_ID_HIGH) << 8) |
> - (unsigned short) i2cReadReg(SII164_I2C_ADDRESS, SII164_DEVICE_ID_LOW);
> + deviceID = ((unsigned short) i2cReadReg(SII164_I2C_ADDRESS,
> + SII164_DEVICE_ID_HIGH) << 8) |
> + (unsigned short) i2cReadReg(SII164_I2C_ADDRESS,
> + SII164_DEVICE_ID_LOW);
>
> return deviceID;
> }

i2cReadReg is always used with SII154_I2C_ADDRESS.

Perhaps it'd be better to redefine i2cReadReg to something else.
i2cReadReg also returns an unsigned char so this cast isn't
particularly sensible.

Perhaps something like:

#define sii164_i2c_read_reg(reg) i2cReadReg(SII164_I2C_ADDRESS, reg)

device_id = sii164_i2c_read_reg(SII164_DEVICE_ID_HIGH) << 8 |
sii164_i2c_read_reg(SII164_DEVICE_ID_LOW);


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