iavf: use signed variable
authorMitch Williams <mitch.a.williams@intel.com>
Tue, 14 May 2019 17:37:00 +0000 (10:37 -0700)
committerJeff Kirsher <jeffrey.t.kirsher@intel.com>
Mon, 17 Jun 2019 22:39:25 +0000 (15:39 -0700)
commit168d91cf2a90a809502b665fff6b4c66579e8f0a
treeb4c0ad5031fa5a6c36e16d976315f488d9c31fee
parentc2417a7b0e3c0bb173067bc06e6ba08c3138b5b1
iavf: use signed variable

The counter variable in iavf_clean_tx_irq starts out negative and climbs
to 0. So allocating it as u16 is actually a really bad idea that just
happens to work because the value underflows and overflows consistently
on most architectures.

Replace the u16 with an int so signed math works as expected.

Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
drivers/net/ethernet/intel/iavf/iavf_txrx.c