460cee698a
This bug was introduced in the 'MMC-4.5 Power OFF Notify Rework' fix. Prior to the aforementioned patch, during resume mmc_init_card was being invoked. The aforesaid patch invokes mmc_card_awake, prior to which mmc_power_up has already set the clock frequency to 400Khz. Since the card init is not done again, this frequency stays as is and results in data time-out errors. Two new functions * mmc_save_ios * mmc_restore_ios were added. The mmc_save_ios is invoked during mmc_suspend process and it saves the current ios values, while mmc_restore_ios is invoked during mmc_resume process and restores the previous ios values before sending the awake command. This ensures that the clock, timing, bus-width etc are set properly before any request is sent to the driver. Signed-off-by: Asutosh Das <asutoshd@codeaurora.org>