On Fri, 2015-07-10 at 10:44 +0100, Srinivas Kandagatla wrote:
> This patch adds just consumers part of the framework just to enable easy
> review.
Trivial notes:
> diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c
> @@ -334,6 +335,7 @@ struct nvmem_device *nvmem_register(struct nvmem_config *config)
> if (config->cells)
> nvmem_add_cells(nvmem, config);
>
> +
superfluous newline
> +static struct nvmem_cell *nvmem_cell_get_from_list(const char *cell_id)
> +{
> + struct nvmem_cell *cell = NULL;
> + struct nvmem_device *nvmem;
> +
> + nvmem = __nvmem_device_get(NULL, &cell, cell_id);
> + if (IS_ERR(nvmem))
> + return ERR_CAST(nvmem);
> +
> +
extra blank line here too
> +/**
> + * nvmem_cell_read() - Read a given nvmem cell
> + *
> + * @cell: nvmem cell to be read.
> + * @len: pointer to length of cell which will be populated on successful read.
> + *
> + * The return value will be an ERR_PTR() on error or a valid pointer
> + * to a char * bufffer. The buffer should be freed by the consumer with a
One too many f's in buffer, it's returning a void *
> + * kfree().
> + */
> +void *nvmem_cell_read(struct nvmem_cell *cell, size_t *len)
> +{
> + struct nvmem_device *nvmem = cell->nvmem;
> + u8 *buf;
[]
> + return buf;
> +}
> +EXPORT_SYMBOL_GPL(nvmem_cell_read);
[]
> +/**
> + * nvmem_cell_write() - Write to a given nvmem cell
> + *
> + * @cell: nvmem cell to be written.
> + * @buf: Buffer to be written.
> + * @len: length of buffer to be written to nvmem cell.
> + *
> + * The return value will be an length of bytes written or non zero on failure.
less than zero or maybe negative on failure?
> + */
> +int nvmem_cell_write(struct nvmem_cell *cell, void *buf, size_t len)
> +{
> + struct nvmem_device *nvmem = cell->nvmem;
> + int rc;
> + void *wbuf = buf;
This variable and assignment seems unnecessary as buf could be reused.
> +
> + if (!nvmem || !nvmem->regmap || nvmem->read_only ||
> + (cell->bit_offset == 0 && len != cell->bytes))
> + return -EINVAL;
> +
> + if (cell->bit_offset || cell->nbits) {
> + wbuf = nvmem_cell_prepare_write_buffer(cell, buf, len);
> + if (IS_ERR(wbuf))
> + return PTR_ERR(wbuf);
> + }
> +
> + rc = regmap_raw_write(nvmem->regmap, cell->offset, wbuf, cell->bytes);
> +
> + /* free the tmp buffer */
> + if (cell->bit_offset)
> + kfree(wbuf);
> +
> + if (IS_ERR_VALUE(rc))
> + return rc;
> +
> + return len;
> +}
> +EXPORT_SYMBOL_GPL(nvmem_cell_write);
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