Messages in this thread Patch in this message | | | From | Ludovic Barre <> | Subject | [PATCH V2 2/5] mmc: mmci: avoid fake busy polling in mmci_irq | Date | Fri, 26 Apr 2019 09:46:35 +0200 |
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From: Ludovic Barre <ludovic.barre@st.com>
mmci_irq function loops until the status is totally cleared. However the busy_detect_flag could occurred even if no busy response is expected and that busy d0 line is low (like in cmd11: voltage switch). Like busy_detect_flag is handled into mmci_cmd_irq this flag can be always excluded.
Signed-off-by: Ludovic Barre <ludovic.barre@st.com> --- drivers/mmc/host/mmci.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c index 049f8e3..a040f54 100644 --- a/drivers/mmc/host/mmci.c +++ b/drivers/mmc/host/mmci.c @@ -1535,9 +1535,10 @@ static irqreturn_t mmci_irq(int irq, void *dev_id) } /* - * Don't poll for busy completion in irq context. + * Busy_detect_flag has been handled by mmci_cmd_irq, + * it can be excluded to avoid to poll on it */ - if (host->variant->busy_detect && host->busy_status) + if (host->variant->busy_detect_flag) status &= ~host->variant->busy_detect_flag; ret = 1; -- 2.7.4
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