net: ipa: fix page free in ipa_endpoint_trans_release()

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@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/net/ipa/ipa_endpoint.c b/drivers/net/ipa/ipa_endpoint.c
index 703e1630f9c26969f85d9be31eb04580ea1dfce0..a53d7e6abe1ea6730a96bca48dbfbf59380a88d8 100644 (file)
--- a/drivers/net/ipa/ipa_endpoint.c
+++ b/drivers/net/ipa/ipa_endpoint.c
@@ -1389,7 +1389,7 @@ void ipa_endpoint_trans_release(struct ipa_endpoint *endpoint,
                struct page *page = trans->data;
 
                if (page)
-                       __free_pages(page, get_order(IPA_RX_BUFFER_SIZE));
+                       put_page(page);
        }
 }