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Subject: [PATCH v10 13/14] powerpc/vas: Free send window in VAS instance
 after credits returned
From:   Haren Myneni <haren@linux.ibm.com>
To:     mpe@ellerman.id.au
Cc:     mikey@neuling.org, srikar@linux.vnet.ibm.com,
        frederic.barrat@fr.ibm.com, ajd@linux.ibm.com,
        linux-kernel@vger.kernel.org, npiggin@gmail.com, hch@infradead.org,
        oohall@gmail.com, clg@kaod.org, sukadev@linux.vnet.ibm.com,
        linuxppc-dev@lists.ozlabs.org, herbert@gondor.apana.org.au
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Date:   Thu, 02 Apr 2020 00:19:19 -0700
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NX may be processing requests while trying to close window. Wait until
all credits are returned and then free send window from VAS instance.

Signed-off-by: Haren Myneni <haren@linux.ibm.com>
---
 arch/powerpc/platforms/powernv/vas-window.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/powerpc/platforms/powernv/vas-window.c b/arch/powerpc/platforms/powernv/vas-window.c
index 3d80f37..3ffad5a 100644
--- a/arch/powerpc/platforms/powernv/vas-window.c
+++ b/arch/powerpc/platforms/powernv/vas-window.c
@@ -1316,14 +1316,14 @@ int vas_win_close(struct vas_window *window)
 
 	unmap_paste_region(window);
 
-	clear_vinst_win(window);
-
 	poll_window_busy_state(window);
 
 	unpin_close_window(window);
 
 	poll_window_credits(window);
 
+	clear_vinst_win(window);
+
 	poll_window_castout(window);
 
 	/* if send window, drop reference to matching receive window */
-- 
1.8.3.1