Commit c4433be6 authored by Giuseppe Cavallaro's avatar Giuseppe Cavallaro Committed by David S. Miller
Browse files

stmmac: fix sleep inside atomic



We cannot use spinlock when kmalloc is invoked with
GFP_KERNEL flag because it can sleep.
So this patch reviews the usage of spinlock within the
stmmac_resume function avoing this bug.
Signed-off-by: default avatarGiuseppe Cavallaro <peppe.cavallaro@st.com>
Reported-by: default avatarJiri Slaby <jirislaby@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 3fb5a991
......@@ -1865,15 +1865,15 @@ static int stmmac_resume(struct platform_device *pdev)
if (!netif_running(dev))
return 0;
spin_lock(&priv->lock);
if (priv->shutdown) {
/* Re-open the interface and re-init the MAC/DMA
and the rings. */
and the rings (i.e. on hibernation stage) */
stmmac_open(dev);
goto out_resume;
return 0;
}
spin_lock(&priv->lock);
/* Power Down bit, into the PM register, is cleared
* automatically as soon as a magic packet or a Wake-up frame
* is received. Anyway, it's better to manually clear
......@@ -1901,7 +1901,6 @@ static int stmmac_resume(struct platform_device *pdev)
netif_start_queue(dev);
out_resume:
spin_unlock(&priv->lock);
return 0;
}
......
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