UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

mmc: pwrseq: Use highest priority for eMMC restart handler 

The pwrseq_emmc driver does a eMMC card reset before a system reboot to
allow broken or limited ROM boot-loaders (that don't have an eMMC reset
logic) to be able to read the second stage from the eMMC.

But this has to be called before a system reboot handler and while most
of them use the priority 128, there are other restart handlers (such as
the syscon-reboot one) that use a higher priority. So, use the highest
priority to make sure that the eMMC hw is reset before a system reboot.

Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Tested-by: Markus Reichl <m.reichl@fivetechno.de>
Tested-by: Anand Moon <linux.amoon@gmail.com>
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
Tested-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Javier Martinez Canillas 2015-10-21 17:15:40 +02:00 committed by Ulf Hansson
parent 6397b7f5f4
commit 1c6e58d836
1 changed files with 3 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/mmc/core/pwrseq_emmc.c
View File

@ -84,11 +84,11 @@ struct mmc_pwrseq *mmc_pwrseq_emmc_alloc(struct mmc_host *host,
/*
* register reset handler to ensure emmc reset also from
* emergency_reboot(), priority 129 schedules it just before
* system reboot
* emergency_reboot(), priority 255 is the highest priority
* so it will be executed before any system reboot handler.
*/
pwrseq->reset_nb.notifier_call = mmc_pwrseq_emmc_reset_nb;
pwrseq->reset_nb.priority = 129;
pwrseq->reset_nb.priority = 255;
register_restart_handler(&pwrseq->reset_nb);
pwrseq->pwrseq.ops = &mmc_pwrseq_emmc_ops;