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Commit c89b09ce authored by Siba Prasad's avatar Siba Prasad Committed by Gerrit - the friendly Code Review server
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mmc: card: block: check the user controlled parameters to avoid overflow



According to specs, some commands require a delay after
issuing the command. idata->ic struct is received from
user in mmc_blk_ioctl_cmd(). So idata->ic.postsleep_min_us,
idata->ic.postsleep_max_us are user controlled. If the min
and max values are set such as max < min, then operation in
the function do_usleep_range will overflow. For avoiding this,
put a condition for checking max < min. If the condition is
true, then print the error message with respective values and
return error.

Change-Id: I76828b58aa46fc4e195da4ae0babb02a7abf6bbe
Signed-off-by: default avatarSiba Prasad <sibap@codeaurora.org>
parent ef9d8a1a
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