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From 4c6bade4cf80d77decc5ea89fbaadff8b008f5e9 Mon Sep 17 00:00:00 2001
From: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Date: Mon, 25 Nov 2013 12:35:28 -0300
Subject: [PATCH 155/203] mtd: nand: pxa3xx: Use info->use_dma to release DMA
resources
After the driver allocates all DMA resources, it sets "info->use_dma".
Therefore, we need to check that variable to decide which resources
needs to be freed, instead of the global use_dma variable.
Without this change, when the device probe fails, the driver will try
to release unallocated DMA resources, with nasty results.
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
---
drivers/mtd/nand/pxa3xx_nand.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/mtd/nand/pxa3xx_nand.c
+++ b/drivers/mtd/nand/pxa3xx_nand.c
@@ -1288,7 +1288,7 @@ static int pxa3xx_nand_init_buff(struct
static void pxa3xx_nand_free_buff(struct pxa3xx_nand_info *info)
{
struct platform_device *pdev = info->pdev;
- if (use_dma) {
+ if (info->use_dma) {
pxa_free_dma(info->data_dma_ch);
dma_free_coherent(&pdev->dev, info->buf_size,
info->data_buff, info->data_buff_phys);
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