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The nand driver normally while waiting for the device to become ready;
this is normally fine, but xway_nand holds the ebu_lock spinlock, and
this can cause lockups if other threads which use ebu_lock are
interleaved. Fix this by waiting instead of polling.
This mainly showed up as crashes in ath9k_pci_owl_loader (see
https://github.com/openwrt/openwrt/issues/9829 ), but turning on
spinlock debugging shows this happening in other places too.
This doesn't seem to measurably impact boot time.
Tested on bt_homehub-v5a with 5.10 and 5.15.
Signed-off-by: Thomas Nixon <tom@tomn.co.uk>
[Add commit description into patch]
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
(cherry picked from commit
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| ase | ||
| base-files | ||
| falcon | ||
| files | ||
| image | ||
| patches-5.10 | ||
| xrx200 | ||
| xway | ||
| xway_legacy | ||
| config-5.10 | ||
| Makefile | ||
| modules.mk | ||