[pxeprefix] Ignore errors from PXENV_FILE_CMDLINE

PXENV_FILE_CMDLINE is an iPXE extension, and will not be supported by
most PXE stacks.  Do not report any errors to the user, since in
almost all cases the error will mean simply "not loaded by iPXE".

Reported-by: Patrick Domack <patrickdk@patrickdk.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>

diff --git a/src/arch/i386/prefix/pxeprefix.S b/src/arch/i386/prefix/pxeprefix.S
index 3c851dca131bb60cc6f24784bc3818da574541a3..05db9894cc00b57f9c9b5d51747f61cc9b75609c 100644 (file)
--- a/src/arch/i386/prefix/pxeprefix.S
+++ b/src/arch/i386/prefix/pxeprefix.S
@@ -396,10 +396,8 @@ get_cmdline:
        movw    $0xffff, ( pxe_parameter_structure + 0x02 )
        movw    $PXENV_FILE_CMDLINE, %bx
        call    pxe_call
-       jnc     1f
-       call    print_pxe_error
-       jmp     99f
-1:     /* Check for non-NULL command line */
+       jc      99f  /* Suppress errors; this is an iPXE extension API call */
+       /* Check for non-NULL command line */
        movw    ( pxe_parameter_structure + 0x02 ), %ax
        testw   %ax, %ax
        jz      99f