linux-kernel - [PATCH] video: pxafb: Fix the function used to balance a 'dma_alloc

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Message-Id: <20200429084505.108897-1-christophe.jaillet@wanadoo.fr>
Date:   Wed, 29 Apr 2020 10:45:05 +0200
From:   Christophe JAILLET <christophe.jaillet@...adoo.fr>
To:     b.zolnierkie@...sung.com, sumit.semwal@...aro.org,
        rafael.j.wysocki@...el.com, corbet@....net,
        viresh.kumar@...aro.org, jani.nikula@...el.com,
        mchehab+samsung@...nel.org, eric.miao@...vell.com
Cc:     dri-devel@...ts.freedesktop.org, linux-fbdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>
Subject: [PATCH] video: pxafb: Fix the function used to balance a 'dma_alloc_coherent()' call

'dma_alloc_coherent()' must be balanced by a call to 'dma_free_coherent()'
not 'dma_free_wc()'.
The correct dma_free_ function is already used in the error handling path
of the probe function.

Fixes: 77e196752bdd ("[ARM] pxafb: allow video memory size to be configurable")
Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
 drivers/video/fbdev/pxafb.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/video/fbdev/pxafb.c b/drivers/video/fbdev/pxafb.c
index 00b96a78676e..6f972bed410a 100644
--- a/drivers/video/fbdev/pxafb.c
+++ b/drivers/video/fbdev/pxafb.c
@@ -2417,8 +2417,8 @@ static int pxafb_remove(struct platform_device *dev)
 
 	free_pages_exact(fbi->video_mem, fbi->video_mem_size);
 
-	dma_free_wc(&dev->dev, fbi->dma_buff_size, fbi->dma_buff,
-		    fbi->dma_buff_phys);
+	dma_free_coherent(&dev->dev, fbi->dma_buff_size, fbi->dma_buff,
+			  fbi->dma_buff_phys);
 
 	return 0;
 }
-- 
2.25.1