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charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-DetectorID-Processed: b00c1d49-9d2e-4205-b15f-d015386d3d5e On 10/8/26 17:32, Karl Mehltretter wrote: > The BOOT register range is optional: the probe function ignores a > failure to map it and the suspend/resume code checks for NULL. It is > mapped with devm_platform_get_and_ioremap_resource(), though, which > calls dev_err_probe() when the resource does not exist. Every > non-removable host without a third reg entry therefore logs an error > at probe time and then works normally. > > The binding only describes the "host" and "cfg" ranges, so this is the > case for the in-tree users. On the Raspberry Pi 5 family (BCM2712), > where the SDIO host of the Wi-Fi module is non-removable, each boot > prints: > > sdhci-brcmstb 1001100000.mmc: error -EINVAL: invalid resource (null) > > Look the resource up with platform_get_resource() first and map it only > when it is present. Hosts that do have the range are mapped by the same > two calls as before. > > Fixes: b7e614802e3f ("mmc: sdhci-brcmstb: save and restore registers during PM") > Assisted-by: LLM > Signed-off-by: Karl Mehltretter Reviewed-by: Florian Fainelli -- Florian