From: Ganesh Goudar
> Sent: 19 May 2017 11:12
T6
>
> take care of UpDbgLaRdPtr[0-3] restriction for T6
>
> Signed-off-by: Ganesh Goudar <[email protected]>
> ---
> drivers/net/ethernet/chelsio/cxgb4/t4_hw.c | 7 +++++++
> 1 file changed, 7 insertions(+)
>
> diff --git a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
> b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
> index aded42b96..917b46b 100644
> --- a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
> +++ b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
> @@ -8268,6 +8268,13 @@ int t4_cim_read_la(struct adapter *adap, u32 *la_buf,
> unsigned int *wrptr)
> if (ret)
> break;
> idx = (idx + 1) & UPDBGLARDPTR_M;
> +
> + /* Bits 0-3 of UpDbgLaRdPtr can be between 0000 to 1001 to
> + * identify the 32-bit portion of the full 312-bit data
> + */
> + if (is_t6(adap->params.chip))
> + while ((idx & 0xf) > 9)
> + idx = (idx + 1) % UPDBGLARDPTR_M;
Why the loop, maybe:
if (is_t6(adap->params.chip) && (idx & 0xf) >= 9)
idx = (idx & 0xf0) + 0x10;
else
idx++;
idx &= UPDBGLARDPTR_M;
David
