On 10 June 2015 at 18:30, Ben Dooks <ben.dooks@xxxxxxxxxxxxxxx> wrote: > We are having an issue with 3.18 on an OMAP3517 and a TI WL1271 > Wifi SDIO card attached to an hsmmc port. The module is powered > from the main 3.3/1.8V supply rails so cannot be powered down. > > The wifi driver is built as a module, and when the module is > unloaded and then reloaded the driver attach fails. The issue > is sdio_bus_probe() calls the sdio_set_block_size(, func, 0) > which fails with -110 (ETIMEDOUT) on the second load. > > Is it possible we need to either ignore the error, or try and > re-set the function when either the driver un-binds / if the > first sdio_set_block_size(, func, 0) call happens? > > Currently we ignore the error and the wifi driver seems to be > working with the device. If there is a better fix then we would > like to know so it can be fixed properly up-stream. I don't think it should fail. So instead of applying a workaround (ignoring/re-setting/re-trying), I would rather try to find the reason to *why* the error occurs. Just a simple test you could do is to *not* call sdio_set_block_size() the second time in ->probe(), and see if that will give you other issues. Kind regards Uffe -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
