On Fri, 2021-03-19 at 15:09 +0100, Ulf Hansson wrote: > On Fri, 19 Mar 2021 at 13:14, Bean Huo <huobean@xxxxxxxxx> wrote: > > > From: Bean Huo <beanhuo@xxxxxxxxxx> > > Currently, we have two ways to issue multiple-block read/write the > > command to the eMMC. One is by normal IO request path fs->block- > > >mmc. > > Another one is that we can issue multiple-block read/write through > > MMC ioctl interface. For the first path, mrq->stop, and mrq->stop- > > >opcode > > will be initialized in mmc_blk_data_prep(). However, for the second > > IO > > path, mrq->stop is not initialized since it is a pre-defined > > multiple > > blocks read/write. > > > As a matter of fact this way is also supported for the regular block > > I/O path. To make the mmc block driver to use it, mmc host drivers > > need to announce that it's supported by setting MMC_CAP_CMD23. > > > > It looks like that is what your patch should be targeted towards, can > > you have a look at this instead? > > Hi Ulf, Thanks for your comments. I will look at that as your suggestion. The patch [1/2] is accepted, so I will just update this patch to the next version. Kind regards, Bean > > Kind regards > > Uffe
