PCI/ASPM: Use pcie_capability_clear_and_set_word() for ASPM disable/restore

pcie_aspm_cap_init() disables ASPM L0s/L1 on both ends of the Link
before touching L1SS config, then later restores the LNKCTL state
that was in effect beforehand. Both steps use raw
pcie_capability_write_word() calls: the disable step computes the
new value by hand from a snapshot taken earlier in the function, and
the restore step writes that same snapshot straight back.

Switch both steps to pcie_capability_clear_and_set_word(), masked to
PCI_EXP_LNKCTL_ASPMC, matching the accessor pcie_config_aspm_dev()
already uses elsewhere in this file for the exact same register. This
does a live read-modify-write of just the ASPM Control bits instead of
relying on a stale snapshot for the rest of the word, and is
consistent with how the rest of the file already touches this
register. No functional change.

Fixes: 7447990137bf ("PCI/ASPM: Disable L1 before disabling L1 PM Substates")
Closes: https://lore.kernel.org/all/20260721143945.86E7D1F000E9@smtp.kernel.org/
Signed-off-by: Krishna Chaitanya Chundru <krishna.chundru@oss.qualcomm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Manivannan Sadhasivam <mani@kernel.org>
Link: https://patch.msgid.link/20260727-aspm-v6-1-2ebb3ee7ef71@oss.qualcomm.com

0 files changed, 0 insertions, 0 deletions