diff options
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.patch | 29 |
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); |