thunderbolt: Use const qualifier for ring_interrupt_index

superm1 · gregkh · commit 64455ea0fff3 · 2023-04-05T11:14:16.000+02:00
commit 1716efdb07938bd6510e1127d02012799112c433 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 &lt;Sanju.Mehta@amd.com&gt;
Cc: stable@vger.kernel.org
Signed-off-by: Mario Limonciello &lt;mario.limonciello@amd.com&gt;
Signed-off-by: Mika Westerberg &lt;mika.westerberg@linux.intel.com&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
diff --git a/drivers/thunderbolt/nhi.c b/drivers/thunderbolt/nhi.c
@@ -30,7 +30,7 @@
 
 #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)

Original file line number	Diff line number	Diff line change
`@@ -30,7 +30,7 @@`
`30`	`30`
`31`	`31`	`#define NHI_MAILBOX_TIMEOUT 500 /* ms */`
`32`	`32`
`33`		`-static int ring_interrupt_index(struct tb_ring *ring)`
	`33`	`+static int ring_interrupt_index(const struct tb_ring *ring)`
`34`	`34`	`{`
`35`	`35`	`int bit = ring->hop;`
`36`	`36`	`if (!ring->is_tx)`