[PATCH 5.10 428/452] net: ipa: fix page free in ipa_endpoint_trans_release()

[Greg Kroah-Hartman]

From: Alex Elder <elder@xxxxxxxxxx>

commit 155c0c90bca918de6e4327275dfc1d97fd604115 upstream.

Currently the (possibly compound) page used for receive buffers are
freed using __free_pages().  But according to this comment above the
definition of that function, that's wrong:
    If you want to use the page's reference count to decide when
    to free the allocation, you should allocate a compound page,
    and use put_page() instead of __free_pages().

Convert the call to __free_pages() in ipa_endpoint_trans_release()
to use put_page() instead.

Fixes: ed23f02680caa ("net: ipa: define per-endpoint receive buffer size")
Signed-off-by: Alex Elder <elder@xxxxxxxxxx>
Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/net/ipa/ipa_endpoint.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/net/ipa/ipa_endpoint.c
+++ b/drivers/net/ipa/ipa_endpoint.c
@@ -1179,7 +1179,7 @@ void ipa_endpoint_trans_release(struct i
 		struct page *page = trans->data;
 
 		if (page)
-			__free_pages(page, get_order(IPA_RX_BUFFER_SIZE));
+			put_page(page);
 	}
 }