Re: [PATCH] mfd:rtsx: do retry when dma transfer error

2017-01-04 Thread 冯伟linux
> This seems strange. What is the reason for using this error? > >> +if (pcr->dma_error_count < 8) > Why 8? dma_error_count record the number of dma transfer error, card clock decreased by 20MHz *dma_error_count, when setting card clock again. while dma_error_count == 8, the clock ha

Re: [PATCH] mfd:rtsx: do retry when dma transfer error

2017-01-03 Thread Lee Jones
On Fri, 09 Dec 2016, steven_f...@realsil.com.cn wrote: > From: steven_feng > > the request should be reissued when dma transfer error. > for rts5227, the clock freq need to step reduce when error occurred. > > Signed-off-by: steven_feng > --- > drivers/mfd/rtsx_pcr.c | 15 +-

[PATCH] mfd:rtsx: do retry when dma transfer error

2016-12-09 Thread steven_feng
From: steven_feng the request should be reissued when dma transfer error. for rts5227, the clock freq need to step reduce when error occurred. Signed-off-by: steven_feng --- drivers/mfd/rtsx_pcr.c | 15 +-- include/linux/mfd/rtsx_pci.h | 2 ++ 2 files changed, 15 insertions(