openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

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>
This commit is contained in:
Mitch Williams 2019-05-14 10:37:00 -07:00 committed by Jeff Kirsher
parent c2417a7b0e
commit 168d91cf2a
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/net/ethernet/intel/iavf/iavf_txrx.c
View File

@ -190,7 +190,7 @@ void iavf_detect_recover_hung(struct iavf_vsi *vsi)
static bool iavf_clean_tx_irq(struct iavf_vsi *vsi,
struct iavf_ring *tx_ring, int napi_budget)
{
u16 i = tx_ring->next_to_clean;
int i = tx_ring->next_to_clean;
struct iavf_tx_buffer *tx_buf;
struct iavf_tx_desc *tx_desc;
unsigned int total_bytes = 0, total_packets = 0;