diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mmc/core/mmc.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c index 8d77ddc85af1..8e11526c5092 100644 --- a/drivers/mmc/core/mmc.c +++ b/drivers/mmc/core/mmc.c @@ -1786,6 +1786,23 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr, } /* + * Enable Command Queue if supported. Note that Packed Commands cannot + * be used with Command Queue. + */ + card->ext_csd.cmdq_en = false; + if (card->ext_csd.cmdq_support && host->caps2 & MMC_CAP2_CQE) { + err = mmc_cmdq_enable(card); + if (err && err != -EBADMSG) + goto free_card; + if (err) { + pr_warn("%s: Enabling CMDQ failed\n", + mmc_hostname(card->host)); + card->ext_csd.cmdq_support = false; + card->ext_csd.cmdq_depth = 0; + err = 0; + } + } + /* * In some cases (e.g. RPMB or mmc_test), the Command Queue must be * disabled for a time, so a flag is needed to indicate to re-enable the * Command Queue. |