On Mon, Apr 14, 2014 at 03:08:05PM +0200, Boris BREZILLON wrote:
> SMBus is a subset of the I2C protocol, oftenly used to access registers on
> external devices.

This is basically fine.  However...

> +     switch (ctx->transfer_type) {
> +     case REGMAP_SMBUS_BYTE_TRANSFER:
> +             while (count > 0 && !ret) {
> +                     ret = i2c_smbus_write_byte_data(ctx->i2c, reg++,
> +                                                     *(u8 *)data++);
> +
> +                     count--;
> +             }
> +             break;

The transfer type gets set once per device at init time so why not just
parameterise based on val_bytes?

> +     case REGMAP_SMBUS_I2C_BLOCK_TRANSFER:
> +             while (count > 0 && !ret) {
> +                     ret = i2c_smbus_write_i2c_block_data(ctx->i2c,
> +                                                          reg,
> +                                                          ctx->val_bytes,
> +                                                          (const u8 *)data);

Fix the const correctness of the API rather than casting.

> +                     reg += ctx->val_bytes;
> +                     count -= ctx->val_bytes;
> +                     data += ctx->val_bytes;
> +             }

I'm assuming this will only be used if val_bytes isn't 1 or 2?

Attachment: signature.asc
Description: Digital signature

Reply via email to