It looks like commit 7628774 "mmc: core: Handle card shutdown from
mmc_bus" causes a crash during "reboot" at least on Tegra platforms. The
issue appears to be in:
> static void mmc_bus_shutdown(struct device *dev)
> {
> struct mmc_driver *drv = to_mmc_driver(dev->driver);
> struct mmc_card *card = mmc_dev_to_card(dev);
> struct mmc_host *host = card->host;
> int ret;
>
> drv->shutdown(card);
Since drv == NULL.
Is this expected (and hence there's a missing guard on that function
call), or is the root-cause some other issue?
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