hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

DMA: shdma: fix CHCLR register address calculation 

struct sh_dmae_device::chan_reg is a pointer to u32, therefore when adding
offsets to it care should be taken to add offsets in sizeof(u32) units, not
in bytes. This patch corrects such a bug. While at it we also remove the
redundant parameter of the affected function.

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 2013-07-02 17:37:58 +02:00 committed by Vinod Koul
parent c095ba7224
commit a28a94e84b
1 changed files with 4 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/dma/sh/shdma.c
View File

@ -49,12 +49,12 @@
static DEFINE_SPINLOCK(sh_dmae_lock);
static LIST_HEAD(sh_dmae_devices);
static void chclr_write(struct sh_dmae_chan *sh_dc, u32 data)
static void channel_clear(struct sh_dmae_chan *sh_dc)
{
struct sh_dmae_device *shdev = to_sh_dev(sh_dc);
__raw_writel(data, shdev->chan_reg +
shdev->pdata->channel[sh_dc->shdma_chan.id].chclr_offset);
__raw_writel(0, shdev->chan_reg +
shdev->pdata->channel[sh_dc->shdma_chan.id].chclr_offset / sizeof(u32));
}
static void sh_dmae_writel(struct sh_dmae_chan *sh_dc, u32 data, u32 reg)
@ -133,7 +133,7 @@ static int sh_dmae_rst(struct sh_dmae_device *shdev)
for (i = 0; i < shdev->pdata->channel_num; i++) {
struct sh_dmae_chan *sh_chan = shdev->chan[i];
if (sh_chan)
chclr_write(sh_chan, 0);
channel_clear(sh_chan);
}
}