On Thu, 2018-01-11 at 17:33 +0200, Andy Shevchenko wrote:
> It seems there is a classical off-by-one typo from the beginning
> when commit
>
> ad7f8a1f9ced ("drm/helper: add Displayport multi-stream helper
> (v0.6)")
>
> introduced a new helper.
>
> Fix a typo by introducing a macro constant.
Any comment on this?
>
> Cc: Dave Airlie <airlied@xxxxxxxxxx>
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
> ---
> drivers/gpu/drm/drm_dp_mst_topology.c | 7 ++++---
> 1 file changed, 4 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c
> b/drivers/gpu/drm/drm_dp_mst_topology.c
> index 70dcfa58d3c2..51c5fc11f852 100644
> --- a/drivers/gpu/drm/drm_dp_mst_topology.c
> +++ b/drivers/gpu/drm/drm_dp_mst_topology.c
> @@ -2936,12 +2936,14 @@ static void drm_dp_mst_dump_mstb(struct
> seq_file *m,
> }
> }
>
> +#define DP_PAYLOAD_TABLE_SIZE 64
> +
> static bool dump_dp_payload_table(struct drm_dp_mst_topology_mgr
> *mgr,
> char *buf)
> {
> int i;
>
> - for (i = 0; i < 64; i += 16) {
> + for (i = 0; i < DP_PAYLOAD_TABLE_SIZE; i += 16) {
> if (drm_dp_dpcd_read(mgr->aux,
> DP_PAYLOAD_TABLE_UPDATE_STATUS +
> i,
> &buf[i], 16) != 16)
> @@ -3028,8 +3030,7 @@ void drm_dp_mst_dump_topology(struct seq_file
> *m,
> seq_printf(m, " revision: hw: %x.%x sw: %x.%x\n",
> buf[0x9] >> 4, buf[0x9] & 0xf, buf[0xa],
> buf[0xb]);
> if (dump_dp_payload_table(mgr, buf))
> - seq_printf(m, "payload table: %*ph\n", 63,
> buf);
> -
> + seq_printf(m, "payload table: %*ph\n",
> DP_PAYLOAD_TABLE_SIZE, buf);
> }
>
> mutex_unlock(&mgr->lock);
--
Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Intel Finland Oy
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