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| author |   Kyungsik Lee <kyungsik.lee@lge.com> | 2012-08-03 00:58:03 +0000 |
|---|---|---|
| committer |   Chris Ball <cjb@laptop.org> | 2012-09-19 16:29:42 +0800 |
| commit | 1a41313e7f8c5b724a2e3ff66558dbe811844423 (patch) | |
| tree | c6a536fc3288f76049b6301c7c7a4e8ce553e067 /scripts/checkstack.pl | |
| parent | mmc: sdhci-pxav3: dt: Support "cd-gpios" property (diff) | |
| download | linux-dev-1a41313e7f8c5b724a2e3ff66558dbe811844423.tar.xz linux-dev-1a41313e7f8c5b724a2e3ff66558dbe811844423.zip | |
mmc: core: Remove bounce buffer in mmc_send_cxd_data()
It is expected that Extended CSD register (the size of this register
is larger than CID/CSD) will be referenced more frequently as more
fields have been added to Extended CSD and it seems that it is not
a good option to double the memory used.
This patch is intended to avoid the use of bounce buffer for reading
Extended CSD register in mmc_send_cxd_data(). It will provide a better
performance gain by removing memcpy() overhead for a half KiB and
a redundant bounce buffer allocated repeatedly at the cost of providing
DMA-capable buffer from upper caller (but on-stack buffer is allowed
with no performance gain).
Signed-off-by: Kyungsik Lee <kyungsik.lee@lge.com>
Reviewed-by: Venkatraman S <svenkatr@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
Diffstat (limited to 'scripts/checkstack.pl')
0 files changed, 0 insertions, 0 deletions