Commit 01e6e143 authored by Lukas Wunner's avatar Lukas Wunner Committed by Greg Kroah-Hartman
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xhci: Expose segment numbers in debugfs 



Ring segments have just been amended with a monotonically increasing
number.

To allow developers to inspect the segment numbers and ensure
correctness in particular after ring expansion, expose them in each
ring's "trbs" file in debugfs.

Signed-off-by: default avatarLukas Wunner <lukas@wunner.de>
Signed-off-by: default avatarMathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20231019102924.2797346-9-mathias.nyman@linux.intel.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 67ab841a

drivers/usb/host/xhci-debugfs.c

+1 −1
Original line number Diff line number Diff line
@@ -204,7 +204,7 @@ static void xhci_ring_dump_segment(struct seq_file *s, 
	for (i = 0; i < TRBS_PER_SEGMENT; i++) {

		trb = &seg->trbs[i];

		dma = seg->dma + i * sizeof(*trb);

		seq_printf(s, "%pad: %s\n", &dma,

		seq_printf(s, "%2u %pad: %s\n", seg->num, &dma,

			   xhci_decode_trb(str, XHCI_MSG_MAX, le32_to_cpu(trb->generic.field[0]),

					   le32_to_cpu(trb->generic.field[1]),

					   le32_to_cpu(trb->generic.field[2]),