From: Ezequiel Garcia Date: Tue, 10 Dec 2013 12:57:15 +0000 (-0300) Subject: mtd: nand: pxa3xx: Use info->use_dma to release DMA resources X-Git-Tag: firefly_0821_release~176^2~4784^2 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=15b540c71cac840f0a3e8b1b4b7a773deb847ffb;p=firefly-linux-kernel-4.4.55.git mtd: nand: pxa3xx: Use info->use_dma to release DMA resources In commit: commit 62e8b851783138a11da63285be0fbf69530ff73d Author: Ezequiel Garcia Date: Fri Oct 4 15:30:38 2013 -0300 mtd: nand: pxa3xx: Allocate data buffer on detected flash size the way the buffer is allocated was changed: the first READ_ID is issued with a small kmalloc'ed buffer. Only once the flash page size is detected the DMA buffers are allocated, and info->use_dma is set. Currently, if the device detection fails, the driver checks the 'use_dma' module parameter and tries to release unallocated DMA resources. Fix this by checking the proper indicator of the DMA allocation, which is 'info->use_dma'. Signed-off-by: Ezequiel Garcia Signed-off-by: Brian Norris --- diff --git a/drivers/mtd/nand/pxa3xx_nand.c b/drivers/mtd/nand/pxa3xx_nand.c index f3d4feafd02b..4b3aaa898a8b 100644 --- a/drivers/mtd/nand/pxa3xx_nand.c +++ b/drivers/mtd/nand/pxa3xx_nand.c @@ -962,7 +962,7 @@ static int pxa3xx_nand_init_buff(struct pxa3xx_nand_info *info) 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);