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| author | Fuqian Huang <huangfq.daxian@gmail.com> | 2019-08-09 13:35:39 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-09-10 10:30:59 +0100 |
| commit | 2046ecf3e1703839df5caa9c44afbf484bcd3622 (patch) | |
| tree | 8b98c34dee7ba4ec863c0369eca8fe0f52631644 | |
| parent | bf489db05ebf7106dd77f79e6edabc45fc318416 (diff) | |
| download | linux-stable-2046ecf3e1703839df5caa9c44afbf484bcd3622.tar.gz linux-stable-2046ecf3e1703839df5caa9c44afbf484bcd3622.tar.bz2 linux-stable-2046ecf3e1703839df5caa9c44afbf484bcd3622.zip | |
net: tundra: tsi108: use spin_lock_irqsave instead of spin_lock_irq in IRQ context
[ Upstream commit 8c25d0887a8bd0e1ca2074ac0c6dff173787a83b ]
As spin_unlock_irq will enable interrupts.
Function tsi108_stat_carry is called from interrupt handler tsi108_irq.
Interrupts are enabled in interrupt handler.
Use spin_lock_irqsave/spin_unlock_irqrestore instead of spin_(un)lock_irq
in IRQ context to avoid this.
Signed-off-by: Fuqian Huang <huangfq.daxian@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/net/ethernet/tundra/tsi108_eth.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/net/ethernet/tundra/tsi108_eth.c b/drivers/net/ethernet/tundra/tsi108_eth.c index 8fd131207ee1..499abe9108fa 100644 --- a/drivers/net/ethernet/tundra/tsi108_eth.c +++ b/drivers/net/ethernet/tundra/tsi108_eth.c @@ -381,9 +381,10 @@ tsi108_stat_carry_one(int carry, int carry_bit, int carry_shift, static void tsi108_stat_carry(struct net_device *dev) { struct tsi108_prv_data *data = netdev_priv(dev); + unsigned long flags; u32 carry1, carry2; - spin_lock_irq(&data->misclock); + spin_lock_irqsave(&data->misclock, flags); carry1 = TSI_READ(TSI108_STAT_CARRY1); carry2 = TSI_READ(TSI108_STAT_CARRY2); @@ -451,7 +452,7 @@ static void tsi108_stat_carry(struct net_device *dev) TSI108_STAT_TXPAUSEDROP_CARRY, &data->tx_pause_drop); - spin_unlock_irq(&data->misclock); + spin_unlock_irqrestore(&data->misclock, flags); } /* Read a stat counter atomically with respect to carries. |