Messages in this thread | | | Date | Wed, 29 Jun 2022 20:25:57 +0200 | Subject | Re: [PATCH 5/7] memory: renesas-rpc-if: Move resource acquisition to .probe() | From | Krzysztof Kozlowski <> |
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On 29/06/2022 19:55, Geert Uytterhoeven wrote: > Hi Krzysztof, > > On Wed, Jun 29, 2022 at 7:44 PM Krzysztof Kozlowski > <krzysztof.kozlowski@linaro.org> wrote: >> On 27/06/2022 17:31, Geert Uytterhoeven wrote: >>> While the acquired resources are tied to the lifetime of the RPC-IF core >>> device (through the use of managed resource functions), the actual >>> resource acquisition is triggered from the HyperBus and SPI child >>> drivers. Due to this mismatch, unbinding and rebinding the child >>> drivers manually fails with -EBUSY: >>> >>> # echo rpc-if-hyperflash > /sys/bus/platform/drivers/rpc-if-hyperflash/unbind >>> # echo rpc-if-hyperflash > /sys/bus/platform/drivers/rpc-if-hyperflash/bind >>> rpc-if ee200000.spi: can't request region for resource [mem 0xee200000-0xee2001ff] >>> rpc-if-hyperflash: probe of rpc-if-hyperflash failed with error -16 >>> >>> Fix this by moving all resource acquisition to the core driver's probe >>> routine. >>> >>> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> >> >> This looks like a fix, so how about putting it as first in the series, >> so backporting is easy/automatic? > > Unfortunately that is not as simple as it sounds, as this really > depends on patch 4.
You sure? Except rebasing I don't see that. rpcif_sw_init() received the rpcif so it had access to all fields.
> I agree patches 1-3 could be moved later, if you think it is worthwhile.
This would not be enough, it has to be first patch to be backportable.
Best regards, Krzysztof
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