On 17/07/12 05:44, Jaehoon Chung wrote:
<snip>
> +/**
> + * mmc_start_bkops - start BKOPS for supported cards
> + * @card: MMC card to start BKOPS
> + *
> + * Start background operations whenever requested.
> + * when the urgent BKOPS bit is set in a R1 command response
> + * then background operations should be started immediately.
> +*/
> +void mmc_start_bkops(struct mmc_card *card)
> +{
> + int err;
> + int timeout;
> + u8 use_busy_signal;
> +
> + BUG_ON(!card);
> + if (!card->ext_csd.bkops_en || !(card->host->caps2 & MMC_CAP2_BKOPS))
> + return;
> +
> + if (mmc_is_exception_event(card, EXT_CSD_URGENT_BKOPS))
> + if (card->ext_csd.raw_bkops_status)
> + mmc_card_set_need_bkops(card);
> +
> + /*
> + * If card is already doing bkops or need for
> + * bkops flag is not set, then do nothing just
> + * return
> + */
> + if (mmc_card_doing_bkops(card) || !mmc_card_need_bkops(card))
> + return;
> +
> + mmc_claim_host(card->host);
> + if (card->ext_csd.raw_bkops_status >= EXT_CSD_BKOPS_LEVEL_2) {
> + timeout = MMC_BKOPS_MAX_TIMEOUT;
> + use_busy_signal = 0;
> + } else {
> + timeout = 0;
> + use_busy_signal = 1;
> + }
Is this the right way around?
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