linux-kernel - [PATCH 5/5] sfc: add missing annotation for efx_ef10_try_update_nic_stats

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Message-Id: <20200601184552.23128-6-jbi.octave@gmail.com>
Date:   Mon,  1 Jun 2020 19:45:52 +0100
From:   Jules Irenge <jbi.octave@...il.com>
To:     linux-kernel@...r.kernel.org
Cc:     tglx@...utronix.de, paulmck@...nel.org, mingo@...hat.com,
        boqun.feng@...il.com, Jules Irenge <jbi.octave@...il.com>,
        Solarflare linux maintainers <linux-net-drivers@...arflare.com>,
        Edward Cree <ecree@...arflare.com>,
        Martin Habets <mhabets@...arflare.com>,
        "David S. Miller" <davem@...emloft.net>,
        netdev@...r.kernel.org (open list:SFC NETWORK DRIVER)
Subject: [PATCH 5/5] sfc: add  missing annotation for efx_ef10_try_update_nic_stats_vf()

Sparse reports a warning at efx_ef10_try_update_nic_stats_vf()
warning: context imbalance in efx_ef10_try_update_nic_stats_vf()
	- unexpected unlock
The root cause is the missing annotation at
efx_ef10_try_update_nic_stats_vf()
Add the missing _must_hold(&efx->stats_lock) annotation

Signed-off-by: Jules Irenge <jbi.octave@...il.com>
---
 drivers/net/ethernet/sfc/ef10.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/sfc/ef10.c b/drivers/net/ethernet/sfc/ef10.c
index 3f16bd807c6e..e8bbbd366625 100644
--- a/drivers/net/ethernet/sfc/ef10.c
+++ b/drivers/net/ethernet/sfc/ef10.c
@@ -1820,6 +1820,7 @@ static size_t efx_ef10_update_stats_pf(struct efx_nic *efx, u64 *full_stats,
 }
 
 static int efx_ef10_try_update_nic_stats_vf(struct efx_nic *efx)
+	__must_hold(&efx->stats_lock)
 {
 	MCDI_DECLARE_BUF(inbuf, MC_CMD_MAC_STATS_IN_LEN);
 	struct efx_ef10_nic_data *nic_data = efx->nic_data;
-- 
2.18.2