tree 7a53d7cc2d493b2e7bad57a88b764892d64e9eb7
parent 1981539914b3626efe4a97bde19ec5fe548b50cf
author Taylor Hutt <thutt@chromium.org> 1353575580 +0000
committer Andy Fleming <afleming@freescale.com> 1354058809 -0600

mmc: Fix incorrect handling of 'read' & 'write' commands

If a malformed 'read' or 'write' command is issued, the Sandbox U-Boot
can crash because the command-handling code does no error checking on
the number of provided arguments.

This change makes the mmc 'erase', 'read' and 'write' commands only
function if the proper number of arguments are supplied.

Also puts the else assignment at the beginning fo the if() statement
to shortens the generated code.  This removes an unnecessary jump from
the generated code.

Signed-off-by: Taylor Hutt <thutt@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Andy Fleming <afleming@freescale.com>