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thunderbolt: Use const qualifier for `ring_interrupt_index` 

commit 1716efdb07 upstream.

`ring_interrupt_index` doesn't change the data for `ring` so mark it as
const. This is needed by the following patch that disables interrupt
auto clear for rings.

Cc: Sanju Mehta <Sanju.Mehta@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Mario Limonciello 2023-03-10 11:20:49 -06:00 committed by Greg Kroah-Hartman
parent 98a357d88e
commit 1608a40002
1 changed files with 1 additions and 1 deletions
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2
drivers/thunderbolt/nhi.c
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@ -38,7 +38,7 @@
#define NHI_MAILBOX_TIMEOUT 500 /* ms */
static int ring_interrupt_index(struct tb_ring *ring)
static int ring_interrupt_index(const struct tb_ring *ring)
{
int bit = ring->hop;
if (!ring->is_tx)