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net: qcom/emac: fix double free of SGMII IRQ during shutdown

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If the interface is not up, then don't try to close it during a
shutdown.  This avoids possible double free of the IRQ, which
can happen during a shutdown.

Fixes: 03eb3eb4d4 ("net: qcom/emac: add shutdown function")
Signed-off-by: Timur Tabi <timur@codeaurora.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Timur Tabi 2017-07-13 15:45:41 -05:00 committed by David S. Miller
parent a8f5cb9e79
commit c98b0537f0
1 changed files with 6 additions and 4 deletions
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10
drivers/net/ethernet/qualcomm/emac/emac.c
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@ -766,11 +766,13 @@ static void emac_shutdown(struct platform_device *pdev)
struct emac_adapter *adpt = netdev_priv(netdev);
struct emac_sgmii *sgmii = &adpt->phy;
/* Closing the SGMII turns off its interrupts */
sgmii->close(adpt);
if (netdev->flags & IFF_UP) {
/* Closing the SGMII turns off its interrupts */
sgmii->close(adpt);
/* Resetting the MAC turns off all DMA and its interrupts */
emac_mac_reset(adpt);
/* Resetting the MAC turns off all DMA and its interrupts */
emac_mac_reset(adpt);
}
}
static struct platform_driver emac_platform_driver = {