blob: 0c95a61b97257abf6426e784003fbcfd2fdbe42a (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
|
From 18166290599760e8ff1b6c0389834beafd09a517 Mon Sep 17 00:00:00 2001
From: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Date: Fri, 4 Oct 2013 15:30:37 -0300
Subject: [PATCH 129/203] mtd: nand: pxa3xx: Move DMA I/O enabling
Instead of setting info->dma each time a command is prepared,
we can move it after the DMA buffers are allocated.
This is more clear and it's the proper place to enable this, given
DMA cannot be turned on and off during runtime.
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Tested-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
---
drivers/mtd/nand/pxa3xx_nand.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
--- a/drivers/mtd/nand/pxa3xx_nand.c
+++ b/drivers/mtd/nand/pxa3xx_nand.c
@@ -540,7 +540,6 @@ static int prepare_command_pool(struct p
info->oob_size = 0;
info->use_ecc = 0;
info->use_spare = 1;
- info->use_dma = (use_dma) ? 1 : 0;
info->is_ready = 0;
info->retcode = ERR_NONE;
if (info->cs != 0)
@@ -950,6 +949,11 @@ static int pxa3xx_nand_init_buff(struct
return info->data_dma_ch;
}
+ /*
+ * Now that DMA buffers are allocated we turn on
+ * DMA proper for I/O operations.
+ */
+ info->use_dma = 1;
return 0;
}
|
