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https://github.com/AsahiLinux/u-boot
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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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|---|---|---|
| .. | ||
| cmd | ||
| common | ||
| dm | ||
| env | ||
| fs | ||
| image | ||
| lib | ||
| log | ||
| optee | ||
| overlay | ||
| py | ||
| stdint | ||
| trace | ||
| bloblist.c | ||
| bootm.c | ||
| cmd_ut.c | ||
| command_ut.c | ||
| common.sh | ||
| compression.c | ||
| Kconfig | ||
| Makefile | ||
| nokia_rx51_test.sh | ||
| print_ut.c | ||
| run | ||
| str_ut.c | ||
| test-main.c | ||
| time_ut.c | ||
| unicode_ut.c | ||
| ut.c | ||