[Meego-kernel] [PATCH v2 0/3]mmc: set a suitable max_discard_sectors value for MFLD sdhci host controller

[Chuanxiao Dong]

Hi,
  This is the version 2 patch which enable erase/trim feature for
  MFLD sdhci host controller. This pach has been sent to upstreamed, not
  accepted yet.

  This patch take MFLD SDHCI host controller cannot erase/trim the whole
  device at one time as an architecture issue. So these patches add a
  new quirk for MFLD sdhci host controller to workaround this. This code
  will only impact the host controller which use this quirk.

  The MFLD SDHCI host controller with this quirk will set the
  max_discard_sectors value to be one erase block size which is safe for
  host to erase at one time.

  change-log: abandon the calculate method used in the version 1
  patches. In this patch, add a quirk and simply set the
  max_discard_sectors valut to one erase block size.

  patch1: remove unused code in mmc block layer.
  patch2: set max_discard_sectors value for host controller with
  MMC_CAP_ERASE_SINGLE cap
  patch3: add ERASE cap and new quirk for MFLD SDHCI host controller

Thanks
Chuanxiao