Commit a32c88b9 authored May 23, 2012 by Konrad Rzeszutek Wilk

xen/hvc: Fix error cases around HVM_PARAM_CONSOLE_PFN



We weren't resetting the parameter to be passed in to a
known default. Nor were we checking the return value of
hvm_get_parameter.

CC: stable@kernel.org
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

parent 2e5ad6b9

drivers/tty/hvc/hvc_xen.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -219,7 +219,8 @@ static int xen_hvm_console_init(void)
		if (r < 0)
		goto err;
		info->evtchn = v;
		hvm_get_parameter(HVM_PARAM_CONSOLE_PFN, &v);
		v = 0;
		r = hvm_get_parameter(HVM_PARAM_CONSOLE_PFN, &v);
		if (r < 0)
		goto err;
		mfn = v;