diff options
| author | David Woodhouse | 2023-10-20 17:15:28 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2023-11-28 17:07:08 +0000 |
| commit | b772e415e1688eac8a6234ae81d4ddc43ea02408 (patch) | |
| tree | 212d2a491d012bde58b54186b295123888500035 | |
| parent | 74db59e63bd894cd87e505ff1846c4d437c2f1ad (diff) | |
hvc/xen: fix error path in xen_hvc_init() to always register frontend driver
commit 2704c9a5593f4a47620c12dad78838ca62b52f48 upstream.
The xen_hvc_init() function should always register the frontend driver,
even when there's no primary console — as there may be secondary consoles.
(Qemu can always add secondary consoles, but only the toolstack can add
the primary because it's special.)
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Juergen Gross <jgross@suse.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20231020161529.355083-3-dwmw2@infradead.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/tty/hvc/hvc_xen.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/tty/hvc/hvc_xen.c b/drivers/tty/hvc/hvc_xen.c index 470a4ee9bfdc..2ac7be0b34b5 100644 --- a/drivers/tty/hvc/hvc_xen.c +++ b/drivers/tty/hvc/hvc_xen.c @@ -604,7 +604,7 @@ static int __init xen_hvc_init(void) ops = &dom0_hvc_ops; r = xen_initial_domain_console_init(); if (r < 0) - return r; + goto register_fe; info = vtermno_to_xencons(HVC_COOKIE); } else { ops = &domU_hvc_ops; @@ -613,7 +613,7 @@ static int __init xen_hvc_init(void) else r = xen_pv_console_init(); if (r < 0) - return r; + goto register_fe; info = vtermno_to_xencons(HVC_COOKIE); info->irq = bind_evtchn_to_irq_lateeoi(info->evtchn); @@ -638,6 +638,7 @@ static int __init xen_hvc_init(void) } r = 0; + register_fe: #ifdef CONFIG_HVC_XEN_FRONTEND r = xenbus_register_frontend(&xencons_driver); #endif |