Rob Herring 039599c92d amba: Retry adding deferred devices at late_initcall ... If amba bus devices defer when adding, the amba bus code simply retries adding the devices every 5 seconds. This doesn't work well as it completely unsynchronized with starting the init process which can happen in less than 5 secs. Add a retry during late_initcall. If the amba devices are added, then deferred probe takes over. If the dependencies have not probed at this point, then there's no improvement over previous behavior. To completely solve this, we'd need to retry after every successful probe as deferred probe does. The list_empty() check now happens outside the mutex, but the mutex wasn't necessary in the first place. This needed to use deferred probe instead of fragile initcall ordering on 32-bit VExpress systems where the apb_pclk has a number of probe dependencies (vexpress-sysregs, vexpress-config). Cc: John Stultz <john.stultz@linaro.org> Cc: Saravana Kannan <saravanak@google.com> Cc: Nicolas Saenz Julienne <nsaenzjulienne@suse.de> Cc: Geert Uytterhoeven <geert+renesas@glider.be> Cc: Russell King <linux@armlinux.org.uk> Tested-by: Sudeep Holla <sudeep.holla@arm.com> Reviewed-by: Sudeep Holla <sudeep.holla@arm.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Rob Herring <robh@kernel.org>		2020-05-05 11:43:01 -05:00
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bus.c	amba: Retry adding deferred devices at late_initcall	2020-05-05 11:43:01 -05:00
Kconfig	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
Makefile	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
tegra-ahb.c	drivers: Introduce device lookup variants by of_node	2019-07-30 13:07:41 +02:00