On 11/01/2022 13:41, Bruce Richardson wrote:
The burst capacity calculation code assumes that the write and read (i.e. ids_returned) values both wrap at the ring-size, but the read value instead wraps as UINT16_MAX. Therefore, instead of just adding ring-size to the write value in case the read is greater, we need to just always mask the result to ensure a correct, in-range, value.Fixes: 9459de4edc99 ("dma/idxd: add burst capacity") Cc: kevin.la...@intel.com Cc: sta...@dpdk.org Reported-by: Sunil Pai G <sunil.pa...@intel.com> Signed-off-by: Bruce Richardson <bruce.richard...@intel.com> --- drivers/dma/idxd/idxd_common.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-)
Acked-by: Kevin Laatz <kevin.la...@intel.com>
