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thunderbolt: Define number of dwords for hardware margining results

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Use a defined size for hardware margining results in preparation for the
software margining extended error counters which requires a larger buffer
size.

Signed-off-by: Rene Sapiens <rene.sapiens@linux.intel.com>
Co-developed-by: Anurag <anurag@intel.com>
Signed-off-by: Anurag <anurag@intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
This commit is contained in:
Rene Sapiens 2026-08-27 17:18:46 -07:00 committed by Mika Westerberg
parent aaf6230cb2
commit c4f71538ee
1 changed files with 4 additions and 2 deletions
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6
drivers/thunderbolt/debugfs.c
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@ -37,6 +37,8 @@
#define COUNTER_SET_LEN 3
#define HW_MARGINING_DWORDS 3
/*
* USB4 spec doesn't specify dwell range, the range of 100 ms to 500 ms
* probed to give good results.
@ -1307,7 +1309,7 @@ static int margining_run_write(void *data, u64 val)
margining->lanes);
ret = usb4_port_hw_margin(port, margining->target, margining->index, &params,
margining->results, ARRAY_SIZE(margining->results));
margining->results, HW_MARGINING_DWORDS);
}
if (down_sw)
@ -1429,7 +1431,7 @@ static int margining_results_show(struct seq_file *s, void *not_used)
seq_printf(s, "0x%08x\n", margining->results[0]);
/* Only the hardware margining has two result dwords */
if (!margining->software) {
for (int i = 1; i < ARRAY_SIZE(margining->results); i++)
for (int i = 1; i < HW_MARGINING_DWORDS; i++)
seq_printf(s, "0x%08x\n", margining->results[i]);
if (margining->lanes == USB4_MARGINING_LANE_ALL) {