[PATCH] x86: mtrr: Fix parsing of "mtrr list" command

[Bin Meng]

On Tue, Sep 1, 2020 at 1:23 PM Bin Meng <bmeng.cn at gmail.com> wrote:
>
> On Fri, Aug 14, 2020 at 3:55 PM Wolfgang Wallner
> <wolfgang.wallner at br-automation.com> wrote:
> >
> > The command 'mtrr' does not recognize the 'list' subcommand any more
> > since the code restructuring in commit b2a76b3fe75a ("x86: mtrr:
> > Restructure so command execution is in one place").
> >
> > The if-else parsing the command arguments does not take 'list' into
> > account: the if-branch is intended for no subcommands, the else-branch
> > is intended for the non-list subcommands (which all expect additional
> > arguments). Calling the 'mtrr list' subcommand leads to a "return
> > CMD_RET_USAGE" in the else-branch.
> >
> > Fix this by changing the else-branch to explicitly checking for
> > if (cmd != 'l').
> >
> > Fixes: b2a76b3fe75a ("x86: mtrr: Restructure so command execution is in one place")
> >
> > Signed-off-by: Wolfgang Wallner <wolfgang.wallner at br-automation.com>
> >
> > ---
> >
> >  cmd/x86/mtrr.c | 3 ++-
> >  1 file changed, 2 insertions(+), 1 deletion(-)
> >
>
> Reviewed-by: Bin Meng <bmeng.cn at gmail.com>
> Tested-by: Bin Meng <bmeng.cn at gmail.com>

applied to u-boot-x86, thanks!