When running the "save" command several times on a mx6qsabresd we see:
U-Boot > save
Saving Environment to MMC...
Writing to MMC(1)... done
U-Boot > save
Saving Environment to MMC...
MMC partition switch failed
U-Boot > save
Saving Environment to MMC...
Writing to MMC(1)... done
U-Boot > save
Saving Environment to MMC...
MMC partition switch failed
U-Boot > save
Saving Environment to MMC...
Writing to MMC(1)... done
U-Boot > save
Saving Environment to MMC...
MMC partition switch failed
Fix this by updating mmc->part_num inside mmc_switch_part() after a succesful
mmc partition switch.
After this fix, we no longer see the error after the "save" command on a
mx6qsabresd. Also tested on a mx53loco.
Reported-by: Jason Liu <r64...@freescale.com>
Signed-off-by: Fabio Estevam <fabio.este...@freescale.com>
---
Changes since v1:
- Do the change inside the mmc core
drivers/mmc/mmc.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c
index 2590f1b..7f568ed 100644
--- a/drivers/mmc/mmc.c
+++ b/drivers/mmc/mmc.c
@@ -680,14 +680,20 @@ static int mmc_change_freq(struct mmc *mmc)
int mmc_switch_part(int dev_num, unsigned int part_num)
{
+ int ret;
struct mmc *mmc = find_mmc_device(dev_num);
if (!mmc)
return -1;
- return mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONF,
+ ret = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONF,
(mmc->part_config & ~PART_ACCESS_MASK)
| (part_num & PART_ACCESS_MASK));
+
+ if (!ret)
+ mmc->part_num = part_num;
+
+ return ret;
}
int mmc_getcd(struct mmc *mmc)
--
1.8.1.2
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