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1e9ced28f1
At present it is possible to call uclass_get() before driver model is
inited. In fact this happens on x86 boards which use Intel FSPv1, since
mrccache_get_region() tries to get the SPI flash device very early
during init.
This has always been undefined behaviour. Previously it generally worked,
i.e. returned an error code without crashing, because gd->uclass_root_s
is zeroed and the uclass can be added despite driver model not being
ready, due to the way lists are implemented. With the change to use a
gd->uclass_root pointer, this no-longer works. For example, it causes a
hang on minnowmax.
Fix this by adding a check that driver model is ready when uclass_get() is
called. This function is called in the process of locating any device, so
it is a good place to add the check.
This fixes booting on minnowmax.
Signed-off-by: Simon Glass <sjg@chromium.org>
Fixes:
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||
|---|---|---|
| .. | ||
| acpi.c | ||
| device-remove.c | ||
| device.c | ||
| devres.c | ||
| dump.c | ||
| fdtaddr.c | ||
| Kconfig | ||
| lists.c | ||
| Makefile | ||
| of_access.c | ||
| of_addr.c | ||
| of_extra.c | ||
| ofnode.c | ||
| read_extra.c | ||
| read.c | ||
| regmap.c | ||
| root.c | ||
| simple-bus.c | ||
| simple-pm-bus.c | ||
| syscon-uclass.c | ||
| uclass.c | ||
| util.c | ||