Re: [PATCH v0 08/42] Drivers: hv: vmbus: Check notifier registration return value
From: Wei Liu <wei.liu@kernel.org>
Date: 2021-11-08 11:16:43
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On Mon, Nov 08, 2021 at 11:11:23AM +0100, Borislav Petkov wrote:
From: Borislav Petkov <redacted> Avoid homegrown notifier registration checks. No functional changes. Signed-off-by: Borislav Petkov <redacted> Cc: linux-hyperv@vger.kernel.org
Acked-by: Wei Liu <wei.liu@kernel.org>
quoted hunk ↗ jump to hunk
--- drivers/hv/vmbus_drv.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c index 392c1ac4f819..370afd108d2d 100644 --- a/drivers/hv/vmbus_drv.c +++ b/drivers/hv/vmbus_drv.c@@ -1574,8 +1574,8 @@ static int vmbus_bus_init(void) * the VMbus channel connection to prevent any VMbus * activity after the VM panics. */ - atomic_notifier_chain_register(&panic_notifier_list, - &hyperv_panic_block); + if (atomic_notifier_chain_register(&panic_notifier_list, &hyperv_panic_block)) + pr_warn("VMBus panic notifier already registered\n"); vmbus_request_offers();-- 2.29.2