提交 932f19de 编写于 作者: P Prashant Sreedharan 提交者: David S. Miller

tg3: Release tp->lock before invoking synchronize_irq()

synchronize_irq() can sleep waiting, for pending IRQ handlers so driver
should release the tp->lock spin lock before invoking synchronize_irq()
Reported-by: NPeter Hurley <peter@hurleysoftware.com>
Tested-by: NPeter Hurley <peter@hurleysoftware.com>
Signed-off-by: NPrashant Sreedharan <prashant@broadcom.com>
Signed-off-by: NMichael Chan <mchan@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
上级 db84bf43
......@@ -7413,6 +7413,8 @@ static inline void tg3_netif_start(struct tg3 *tp)
}
static void tg3_irq_quiesce(struct tg3 *tp)
__releases(tp->lock)
__acquires(tp->lock)
{
int i;
......@@ -7421,8 +7423,12 @@ static void tg3_irq_quiesce(struct tg3 *tp)
tp->irq_sync = 1;
smp_mb();
spin_unlock_bh(&tp->lock);
for (i = 0; i < tp->irq_cnt; i++)
synchronize_irq(tp->napi[i].irq_vec);
spin_lock_bh(&tp->lock);
}
/* Fully shutdown all tg3 driver activity elsewhere in the system.
......@@ -9018,6 +9024,8 @@ static void tg3_restore_clk(struct tg3 *tp)
/* tp->lock is held. */
static int tg3_chip_reset(struct tg3 *tp)
__releases(tp->lock)
__acquires(tp->lock)
{
u32 val;
void (*write_op)(struct tg3 *, u32, u32);
......@@ -9073,9 +9081,13 @@ static int tg3_chip_reset(struct tg3 *tp)
}
smp_mb();
tg3_full_unlock(tp);
for (i = 0; i < tp->irq_cnt; i++)
synchronize_irq(tp->napi[i].irq_vec);
tg3_full_lock(tp, 0);
if (tg3_asic_rev(tp) == ASIC_REV_57780) {
val = tr32(TG3_PCIE_LNKCTL) & ~TG3_PCIE_LNKCTL_L1_PLL_PD_EN;
tw32(TG3_PCIE_LNKCTL, val | TG3_PCIE_LNKCTL_L1_PLL_PD_DIS);
......
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