[U-Boot] [PATCH] MMC HW partition switching must also invalidate the cache

Hi Jan,

Subject: [EXT] [U-Boot] [PATCH] MMC HW partition switching must also invalidate the cache

Please add a bit more commit information about why and how.

Thanks, Peng.

Signed-off-by: Jan Šedivý jans@zhinst.com

drivers/mmc/mmc.c | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c index 456c1b4..3d9a68e 100644 --- a/drivers/mmc/mmc.c +++ b/drivers/mmc/mmc.c @@ -954,8 +954,13 @@ int mmc_switch_part(struct mmc *mmc, unsigned int part_num) * to return to representing the raw device. */ if ((ret == 0) || ((ret == -ENODEV) && (part_num == 0))) {

•           struct blk_desc *desc = mmc_get_blk_desc(mmc);
  

•           ret = mmc_set_capacity(mmc, part_num);
  

•           mmc_get_blk_desc(mmc)->hwpart = part_num;
  

•           if (desc && desc->hwpart != part_num) {
  

•                   desc->hwpart = part_num;
  

•                   blkcache_invalidate(desc->if_type,
  

desc->devnum);

•           }
    }
  
    return ret;
  

@@ -2673,7 +2678,12 @@ retry: return err;

    /* The internal partition reset to user partition(0) at every CMD0*/

•   mmc_get_blk_desc(mmc)->hwpart = 0;
  

•   struct blk_desc *desc = mmc_get_blk_desc(mmc);
  

•   if (desc && desc->hwpart != 0) {
  

•           desc->hwpart = 0;
  

•           blkcache_invalidate(desc->if_type, desc->devnum);
  

•   }
  
    /* Test for SD version 2 */
    err = mmc_send_if_cond(mmc);
  

-- 1.7.9.5

---

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