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| author |   Johan Rudholm <johan.rudholm@stericsson.com> | 2011-11-23 09:05:58 +0100 |
|---|---|---|
| committer |   Chris Ball <cjb@laptop.org> | 2012-01-11 23:58:42 -0500 |
| commit | 4d6144de8ba263eb3691a737c547e5b2fdc45287 (patch) | |
| tree | 18ff9af5efcf42fdafae2e76a0df75cf498923e8 /drivers/mmc/core/core.c | |
| parent | mmc: sdhci-esdhc: Change delay after setting clock from 100ms to 1ms (diff) | |
| download | linux-dev-4d6144de8ba263eb3691a737c547e5b2fdc45287.tar.xz linux-dev-4d6144de8ba263eb3691a737c547e5b2fdc45287.zip | |
mmc: core: check for zero length ioctl data
If the read or write buffer size associated with the command sent
through the mmc_blk_ioctl is zero, do not prepare data buffer.
This enables a ioctl(2) call to for instance send a MMC_SWITCH to set
a byte in the ext_csd.
Signed-off-by: Johan Rudholm <johan.rudholm@stericsson.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
Diffstat (limited to 'drivers/mmc/core/core.c')
0 files changed, 0 insertions, 0 deletions