linux_dsm_epyc7002/drivers/amba
Marek Szyprowski a41980f2a3 ARM: 8566/1: drivers: amba: properly handle devices with power domains
To read pid/cid registers, the probed device need to be properly turned on.
When it is inside a power domain, the bus code should ensure that the
given power domain is enabled before trying to access device's registers.
However in some cases power domain (or clocks) might not be yet available.
Returning -EPROBE_DEFER is not a solution in such case, because callers
don't handle this special error code. Instead such devices are added to the
special list and their registration is retried from periodic worker until
all resources are available.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2016-05-05 19:00:40 +01:00
..
bus.c ARM: 8566/1: drivers: amba: properly handle devices with power domains 2016-05-05 19:00:40 +01:00
Kconfig amba: Hide TEGRA_AHB symbol 2015-11-24 16:47:25 +01:00
Makefile ARM: tegra: Add Tegra AHB driver 2012-05-08 13:30:49 -06:00
tegra-ahb.c ARM: 8334/1: amba: tegra-ahb: detect and correct bogus base address 2015-04-02 10:03:55 +01:00