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Date: Fri, 13 Feb 2015 19:52:48 +0800 From: Addy Ke <addy.ke@...k-chips.com> To: jh80.chung@...sung.com, ulf.hansson@...aro.org, olof@...om.net, alim.akhtar@...il.com, a.hajda@...sung.com, dianders@...omium.org Cc: heiko@...ech.de, cf@...k-chips.com, lintao@...k-chips.com, huangtao@...k-chips.com, linux-kernel@...r.kernel.org, linux-mmc@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, linux-rockchip@...ts.infradead.org, Addy Ke <addy.ke@...k-chips.com> Subject: [PATCH v3 3/3] mmc: dw_mmc: Don't start command while data busy We should wait for data busy here in non-volt-switch state. This may happend when sdio sends CMD53. Signed-off-by: Addy Ke <addy.ke@...k-chips.com> --- drivers/mmc/host/dw_mmc.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c index f0d9da5..23507c9 100644 --- a/drivers/mmc/host/dw_mmc.c +++ b/drivers/mmc/host/dw_mmc.c @@ -1076,6 +1076,12 @@ static void dw_mci_request(struct mmc_host *mmc, struct mmc_request *mrq) WARN_ON(slot->mrq); /* + * We should wait for data busy here in non-volt-switch state. + * This may happend when sdio sends CMD53. + */ + dw_mci_wait_busy(slot); + + /* * The check for card presence and queueing of the request must be * atomic, otherwise the card could be removed in between and the * request wouldn't fail until another card was inserted. -- 1.8.3.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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