Re: [PATCH v6 2/4] mtd:nand:omap2: clean-up BCHx_HW and BCHx_SW ECC configurations in device_probe

Hi Pekon,

On Thu, Sep 12, 2013 at 05:20:17PM +0530, Pekon Gupta wrote:

OMAP NAND driver support multiple ECC scheme, which can used in following
different flavours, depending on in-build Hardware engines supported by SoC.

+---------------------------------------+---------------+---------------+
| ECC scheme                            |ECC calculation|Error detection|
+---------------------------------------+---------------+---------------+
|OMAP_ECC_HAMMING_CODE_HW               |H/W (GPMC)     |S/W            |
+---------------------------------------+---------------+---------------+
|OMAP_ECC_BCH8_CODE_HW_DETECTION_SW     |H/W (GPMC)     |S/W            |
|(requires CONFIG_MTD_NAND_ECC_BCH)     |               |               |
+---------------------------------------+---------------+---------------+
|OMAP_ECC_BCH8_CODE_HW                  |H/W (GPMC)     |H/W (ELM)      |
|(requires CONFIG_MTD_NAND_OMAP_BCH &&  |               |               |
| ti,elm-id in DT)                      |               |               |
+---------------------------------------+---------------+---------------+
To optimize footprint of omap2-nand driver, selection of some ECC schemes
also require enabling following Kconfigs, in addition to setting appropriate
DT bindings
- Kconfig:CONFIG_MTD_NAND_ECC_BCH        enables S/W based BCH ECC algorithm
- Kconfig:CONFIG_MTD_NAND_OMAP_BCH       enables H/W based BCH ECC algorithm

This patch

... does too many unrelated things in a single patch. I am not
comfortable taking large amounts of refactoring mixed in with Kconfig
and #ifdef changes. Can you please separate the steps you list below
into multiple patches and describe each one? I think you are doing many
trivial things, but it's difficult to separate the noise out from the
substantial changes.

Or, you can wait even longer until I have more time to kill :)

- removes OMAP_ECC_HAMMING_CODE_DEFAULT and OMAP_ECC_HAMMING_CODE_HW_ROMCODE
- separates the configurations for other ECC schemes
- fixes dependency issues based on Kconfig options
- updates ELM device detection in is_elm_present()
- cleans redundant code

Brian
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