67 lines
2.1 KiB
Diff
67 lines
2.1 KiB
Diff
From 49ff5bd7d4d51a8eb05796f130e9a1a96d18f522 Mon Sep 17 00:00:00 2001
|
|
From: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
|
|
Date: Wed, 17 Apr 2013 13:38:14 -0300
|
|
Subject: [PATCH 106/203] mtd: nand: pxa3xx: Move buffer release code to its
|
|
own function
|
|
|
|
Create a function to release the buffer and the dma channel, thus undoing
|
|
what pxa3xx_nand_init_buff() did. This commit makes the code more readable
|
|
and will allow to handle non-DMA capable platforms easier.
|
|
|
|
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
|
|
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
|
|
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
|
|
---
|
|
drivers/mtd/nand/pxa3xx_nand.c | 26 ++++++++++++++------------
|
|
1 file changed, 14 insertions(+), 12 deletions(-)
|
|
|
|
--- a/drivers/mtd/nand/pxa3xx_nand.c
|
|
+++ b/drivers/mtd/nand/pxa3xx_nand.c
|
|
@@ -912,6 +912,18 @@ static int pxa3xx_nand_init_buff(struct
|
|
return 0;
|
|
}
|
|
|
|
+static void pxa3xx_nand_free_buff(struct pxa3xx_nand_info *info)
|
|
+{
|
|
+ struct platform_device *pdev = info->pdev;
|
|
+ if (use_dma) {
|
|
+ pxa_free_dma(info->data_dma_ch);
|
|
+ dma_free_coherent(&pdev->dev, MAX_BUFF_SIZE,
|
|
+ info->data_buff, info->data_buff_phys);
|
|
+ } else {
|
|
+ kfree(info->data_buff);
|
|
+ }
|
|
+}
|
|
+
|
|
static int pxa3xx_nand_sensing(struct pxa3xx_nand_info *info)
|
|
{
|
|
struct mtd_info *mtd;
|
|
@@ -1137,12 +1149,7 @@ static int alloc_nand_resource(struct pl
|
|
|
|
fail_free_buf:
|
|
free_irq(irq, info);
|
|
- if (use_dma) {
|
|
- pxa_free_dma(info->data_dma_ch);
|
|
- dma_free_coherent(&pdev->dev, MAX_BUFF_SIZE,
|
|
- info->data_buff, info->data_buff_phys);
|
|
- } else
|
|
- kfree(info->data_buff);
|
|
+ pxa3xx_nand_free_buff(info);
|
|
fail_disable_clk:
|
|
clk_disable_unprepare(info->clk);
|
|
return ret;
|
|
@@ -1163,12 +1170,7 @@ static int pxa3xx_nand_remove(struct pla
|
|
irq = platform_get_irq(pdev, 0);
|
|
if (irq >= 0)
|
|
free_irq(irq, info);
|
|
- if (use_dma) {
|
|
- pxa_free_dma(info->data_dma_ch);
|
|
- dma_free_writecombine(&pdev->dev, MAX_BUFF_SIZE,
|
|
- info->data_buff, info->data_buff_phys);
|
|
- } else
|
|
- kfree(info->data_buff);
|
|
+ pxa3xx_nand_free_buff(info);
|
|
|
|
clk_disable_unprepare(info->clk);
|
|
|