[PATCH RESEND 1/2] SD/MMC: add an interface to re-initialize bounce buffer

-initialize bounce buffer accorinding to new bounce size at run-time; Cc: Chris Ball Cc: Rob Landley Signed-off-by: Qiang Liu --- Hi all, I resend the patch because bounce size is a key factor of performance for some SDMA card, larger bounce size will improve throughput under condition of mass data

[PATCH RESEND 2/2] mmc/doc: feature description of runtime bounce buffer size adjustment

Add feature description of attribute bounce buffer size. Cc: Chris Ball Cc: Rob Landley Signed-off-by: Qiang Liu --- Documentation/mmc/mmc-dev-attrs.txt |2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/Documentation/mmc/mmc-dev-attrs.txt b/Documentation/mmc/mmc-dev