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| author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2018-03-19 16:19:32 +0200 |
|---|---|---|
| committer | Jani Nikula <jani.nikula@intel.com> | 2018-03-28 09:12:16 +0300 |
| commit | 7056a2bccc3b5afc51f9b35b30a46f0d9219968d (patch) | |
| tree | 6fbd0166c96cc542fd4656f3d0487de3c896b24e /drivers/gpu | |
| parent | a7d2a87e99deb5481b5dd723408c42f460de25a3 (diff) | |
| download | linux-stable-7056a2bccc3b5afc51f9b35b30a46f0d9219968d.tar.gz linux-stable-7056a2bccc3b5afc51f9b35b30a46f0d9219968d.tar.bz2 linux-stable-7056a2bccc3b5afc51f9b35b30a46f0d9219968d.zip | |
drm/dp/mst: Fix off-by-one typo when dump payload table
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.
Cc: Dave Airlie <airlied@redhat.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180319141932.37290-1-andriy.shevchenko@linux.intel.com
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/drm_dp_mst_topology.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c index 6fac4129e6a2..658830620ca3 100644 --- a/drivers/gpu/drm/drm_dp_mst_topology.c +++ b/drivers/gpu/drm/drm_dp_mst_topology.c @@ -2941,12 +2941,14 @@ 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) @@ -3015,7 +3017,7 @@ void drm_dp_mst_dump_topology(struct seq_file *m, mutex_lock(&mgr->lock); if (mgr->mst_primary) { - u8 buf[64]; + u8 buf[DP_PAYLOAD_TABLE_SIZE]; int ret; ret = drm_dp_dpcd_read(mgr->aux, DP_DPCD_REV, buf, DP_RECEIVER_CAP_SIZE); @@ -3033,8 +3035,7 @@ 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); |