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usb: xhci: move link chain bit quirk checks into one helper function.

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commit 7476a2215c upstream.

Older 0.95 xHCI hosts and some other specific newer hosts require the
chain bit to be set for Link TRBs even if the link TRB is not in the
middle of a transfer descriptor (TD).

move the checks for all those cases  into one xhci_link_chain_quirk()
function to clean up and avoid code duplication.

No functional changes.

[skip renaming chain_links flag, reword commit message -Mathias]

Signed-off-by: Niklas Neronin <niklas.neronin@linux.intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20240626124835.1023046-10-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[Shivani: Modified to apply on v5.10.y-v6.1.y]
Signed-off-by: Shivani Agarwal <shivani.agarwal@broadcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Niklas Neronin 2026-01-08 00:49:26 -08:00 • committed by Greg Kroah-Hartman
commit d16a2857ad
3 changed files with 9 additions and 16 deletions
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