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[ARM] 3601/1: i.MX/MX1 DMA error handling for signaled channels only

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Patch from Pavel Pisa

There has been bug, that dma_err_handler() touches even
channels not signaling error condition.

Problem noticed by Andrea Paterniani.

Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Pavel Pisa
2006-06-22 22:21:03 +01:00
committed by Russell King
parent e22b04fb6b
commit fa3e686a34
2 changed files with 48 additions and 31 deletions
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8
include/asm-arm/arch-imx/imx-dma.h
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@@ -46,7 +46,7 @@
struct imx_dma_channel {
const char *name;
void (*irq_handler) (int, void *, struct pt_regs *);
void (*err_handler) (int, void *, struct pt_regs *);
void (*err_handler) (int, void *, struct pt_regs *, int errcode);
void *data;
dmamode_t dma_mode;
struct scatterlist *sg;
@@ -58,6 +58,10 @@ struct imx_dma_channel {
extern struct imx_dma_channel imx_dma_channels[IMX_DMA_CHANNELS];
#define IMX_DMA_ERR_BURST 1
#define IMX_DMA_ERR_REQUEST 2
#define IMX_DMA_ERR_TRANSFER 4
#define IMX_DMA_ERR_BUFFER 8
/* The type to distinguish channel numbers parameter from ordinal int type */
typedef int imx_dmach_t;
@@ -74,7 +78,7 @@ imx_dma_setup_sg(imx_dmach_t dma_ch,
int
imx_dma_setup_handlers(imx_dmach_t dma_ch,
void (*irq_handler) (int, void *, struct pt_regs *),
void (*err_handler) (int, void *, struct pt_regs *), void *data);
void (*err_handler) (int, void *, struct pt_regs *, int), void *data);
void imx_dma_enable(imx_dmach_t dma_ch);