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Diffstat (limited to 'target/linux/mvebu/patches-3.10/0155-mtd-nand-pxa3xx-Use-info-use_dma-to-release-DMA-reso.patch')
-rw-r--r--target/linux/mvebu/patches-3.10/0155-mtd-nand-pxa3xx-Use-info-use_dma-to-release-DMA-reso.patch29
1 files changed, 29 insertions, 0 deletions
diff --git a/target/linux/mvebu/patches-3.10/0155-mtd-nand-pxa3xx-Use-info-use_dma-to-release-DMA-reso.patch b/target/linux/mvebu/patches-3.10/0155-mtd-nand-pxa3xx-Use-info-use_dma-to-release-DMA-reso.patch
new file mode 100644
index 0000000000..d86cc9bf85
--- /dev/null
+++ b/target/linux/mvebu/patches-3.10/0155-mtd-nand-pxa3xx-Use-info-use_dma-to-release-DMA-reso.patch
@@ -0,0 +1,29 @@
+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);