On Fri, 2021-03-19 at 15:09 +0100, Ulf Hansson wrote:
On Fri, 19 Mar 2021 at 13:14, Bean Huo huobean@gmail.com wrote:
From: Bean Huo beanhuo@micron.com 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