diff options
| author | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2012-05-23 20:55:38 +0400 |
|---|---|---|
| committer | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2012-05-24 22:15:35 +0400 |
| commit | a32c88b9386ce3df87f28dd46bdc3776cd6edf75 (patch) | |
| tree | 13c729ff691e972489f852dc005af39564c8d1e3 /drivers/tty/hvc | |
| parent | 2e5ad6b9c45d43cc4e7b8ac5ded1c55a7c4a3893 (diff) | |
| download | linux-a32c88b9386ce3df87f28dd46bdc3776cd6edf75.tar.xz | |
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>
Diffstat (limited to 'drivers/tty/hvc')
| -rw-r--r-- | drivers/tty/hvc/hvc_xen.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/tty/hvc/hvc_xen.c b/drivers/tty/hvc/hvc_xen.c index afc7fc27aa52..3277f0eec4a7 100644 --- a/drivers/tty/hvc/hvc_xen.c +++ b/drivers/tty/hvc/hvc_xen.c @@ -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; |