The main reason to add this check is to avoid unnecessary
mmc_request like the on-going cmd and the corresponding sbc
if the card is removed. Although we have already checked this in
dw_mci_handle_cd for runtime usage of sd card and dw_mci_init_slot
for noremovable devices, but there is a timing gap before it really
calls dw_mci_get_cd as mmc_detect_change needs some delay here.
Another gain here is that we could save some checkings of card status
after sd card been removed.
Change-Id: Iea741c1c72985fbe078f48da3796bddcab816e66
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
static bool dw_mci_reset(struct dw_mci *host);
static bool dw_mci_ctrl_reset(struct dw_mci *host, u32 reset);
static int dw_mci_card_busy(struct mmc_host *mmc);
static bool dw_mci_reset(struct dw_mci *host);
static bool dw_mci_ctrl_reset(struct dw_mci *host, u32 reset);
static int dw_mci_card_busy(struct mmc_host *mmc);
+static int dw_mci_get_cd(struct mmc_host *mmc);
#if defined(CONFIG_DEBUG_FS)
static int dw_mci_req_show(struct seq_file *s, void *v)
#if defined(CONFIG_DEBUG_FS)
static int dw_mci_req_show(struct seq_file *s, void *v)
* atomic, otherwise the card could be removed in between and the
* request wouldn't fail until another card was inserted.
*/
* atomic, otherwise the card could be removed in between and the
* request wouldn't fail until another card was inserted.
*/
- spin_lock_bh(&host->lock);
- if (!test_bit(DW_MMC_CARD_PRESENT, &slot->flags)) {
- spin_unlock_bh(&host->lock);
+ if (!dw_mci_get_cd(mmc)) {
mrq->cmd->error = -ENOMEDIUM;
mmc_request_done(mmc, mrq);
return;
}
mrq->cmd->error = -ENOMEDIUM;
mmc_request_done(mmc, mrq);
return;
}
+ spin_lock_bh(&host->lock);
+
dw_mci_queue_request(host, slot, mrq);
spin_unlock_bh(&host->lock);
dw_mci_queue_request(host, slot, mrq);
spin_unlock_bh(&host->lock);