Geert Uytterhoeven wrote:
On Tue, Nov 3, 2015 at 11:03 AM, Nikolay Aleksandrov
<niko...@cumulusnetworks.com> wrote:
On 11/03/2015 03:55 AM, Jarod Wilson wrote:
[snip]
+#define for_each_netdev_feature(mask_addr, feature) \
+ int bit; \
+ for_each_set_bit(bit, (unsigned long *)mask_addr, NETDEV_FEATURE_COUNT) \
+ feature = __NETIF_F_BIT(bit);
+
^
This is broken, it will not work for more than a single feature.
Indeed it is.
This is used as:
for_each_netdev_feature(&upper_disables, feature) {
...
}
which expands to:
int bit;
for_each_set_bit(bit, (unsigned long *)mask_addr, NETDEV_FEATURE_COUNT)
feature = __NETIF_F_BIT(bit);
{
...
}
Note the assignment to "feature" happens outside the {}-delimited block.
And the block is always executed once.
Bah, crap, I was still staring at the code not seeing it, thank you for
the detailed cluebat. I'll fix that up right now.
--
Jarod Wilson
ja...@redhat.com
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
