linux-kernel - [PATCH AUTOSEL 4.19 36/73] xen/grant-table: Fix incorrect gnttab_dma_free_pages() pr

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Message-Id: <20181114222207.98701-36-sashal@kernel.org>
Date:   Wed, 14 Nov 2018 17:21:30 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     stable@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Liam Merwick <Liam.Merwick@...cle.com>,
        Liam Merwick <liam.merwick@...cle.com>,
        Juergen Gross <jgross@...e.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH AUTOSEL 4.19 36/73] xen/grant-table: Fix incorrect gnttab_dma_free_pages() pr_debug message

From: Liam Merwick <Liam.Merwick@...cle.com>

[ Upstream commit d9cccfa7c4d1d9ef967ec9308df7304a18609b30 ]

If a call to xenmem_reservation_increase() in gnttab_dma_free_pages()
fails it triggers a message "Failed to decrease reservation..." which
should be "Failed to increase reservation..."

Fixes: 9bdc7304f536 ('xen/grant-table: Allow allocating buffers suitable for DMA')
Reported-by: Ross Philipson <ross.philipson@...cle.com>
Signed-off-by: Liam Merwick <liam.merwick@...cle.com>
Reviewed-by: Mark Kanda <mark.kanda@...cle.com>
Reviewed-by: Juergen Gross <jgross@...e.com>
Signed-off-by: Juergen Gross <jgross@...e.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/xen/grant-table.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/xen/grant-table.c b/drivers/xen/grant-table.c
index 84575baceebc..97341fa75458 100644
--- a/drivers/xen/grant-table.c
+++ b/drivers/xen/grant-table.c
@@ -914,7 +914,7 @@ int gnttab_dma_free_pages(struct gnttab_dma_alloc_args *args)
 
 	ret = xenmem_reservation_increase(args->nr_pages, args->frames);
 	if (ret != args->nr_pages) {
-		pr_debug("Failed to decrease reservation for DMA buffer\n");
+		pr_debug("Failed to increase reservation for DMA buffer\n");
 		ret = -EFAULT;
 	} else {
 		ret = 0;
-- 
2.17.1