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DMA: shdma: make a pointer const

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Platform data shouldn't be changed at run-time, so, pointers to it should
be const.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski+renesas@gmail.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
This commit is contained in:
Guennadi Liakhovetski 2013-08-02 16:18:09 +02:00 committed by Vinod Koul
parent cc6b0f0238
commit 2833c47e0e
2 changed files with 6 additions and 6 deletions
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10
drivers/dma/sh/shdma.c
View File

@ -177,7 +177,7 @@ static bool dmae_is_busy(struct sh_dmae_chan *sh_chan)
static unsigned int calc_xmit_shift(struct sh_dmae_chan *sh_chan, u32 chcr)
{
struct sh_dmae_device *shdev = to_sh_dev(sh_chan);
struct sh_dmae_pdata *pdata = shdev->pdata;
const struct sh_dmae_pdata *pdata = shdev->pdata;
int cnt = ((chcr & pdata->ts_low_mask) >> pdata->ts_low_shift) |
((chcr & pdata->ts_high_mask) >> pdata->ts_high_shift);
@ -190,7 +190,7 @@ static unsigned int calc_xmit_shift(struct sh_dmae_chan *sh_chan, u32 chcr)
static u32 log2size_to_chcr(struct sh_dmae_chan *sh_chan, int l2size)
{
struct sh_dmae_device *shdev = to_sh_dev(sh_chan);
struct sh_dmae_pdata *pdata = shdev->pdata;
const struct sh_dmae_pdata *pdata = shdev->pdata;
int i;
for (i = 0; i < pdata->ts_shift_num; i++)
@ -250,7 +250,7 @@ static int dmae_set_chcr(struct sh_dmae_chan *sh_chan, u32 val)
static int dmae_set_dmars(struct sh_dmae_chan *sh_chan, u16 val)
{
struct sh_dmae_device *shdev = to_sh_dev(sh_chan);
struct sh_dmae_pdata *pdata = shdev->pdata;
const struct sh_dmae_pdata *pdata = shdev->pdata;
const struct sh_dmae_channel *chan_pdata = &pdata->channel[sh_chan->shdma_chan.id];
void __iomem *addr = shdev->dmars;
unsigned int shift = chan_pdata->dmars_bit;
@ -319,7 +319,7 @@ static const struct sh_dmae_slave_config *dmae_find_slave(
struct sh_dmae_chan *sh_chan, int match)
{
struct sh_dmae_device *shdev = to_sh_dev(sh_chan);
struct sh_dmae_pdata *pdata = shdev->pdata;
const struct sh_dmae_pdata *pdata = shdev->pdata;
const struct sh_dmae_slave_config *cfg;
int i;
@ -665,7 +665,7 @@ static const struct shdma_ops sh_dmae_shdma_ops = {
static int sh_dmae_probe(struct platform_device *pdev)
{
struct sh_dmae_pdata *pdata = pdev->dev.platform_data;
const struct sh_dmae_pdata *pdata = pdev->dev.platform_data;
unsigned long irqflags = IRQF_DISABLED,
chan_flag[SH_DMAE_MAX_CHANNELS] = {};
int errirq, chan_irq[SH_DMAE_MAX_CHANNELS];

2
drivers/dma/sh/shdma.h
View File

@ -36,7 +36,7 @@ struct sh_dmae_chan {
struct sh_dmae_device {
struct shdma_dev shdma_dev;
struct sh_dmae_chan *chan[SH_DMAE_MAX_CHANNELS];
struct sh_dmae_pdata *pdata;
const struct sh_dmae_pdata *pdata;
struct list_head node;
void __iomem *chan_reg;
void __iomem *dmars;