From: "Maxin B. John" <maxin.john@xxxxxxxx>
With 3.9.0-rc8 kernel in p2020rdb powerpc target, the console gets
flooded with this message without any SD-Cards present:
"mmc0: Timeout waiting for hardware interrupt"
Since the driver doesn't implement proper card detection, it assumes that
card is always present. This quick-n-dirty patch removes this console
flooding.
In an ideal world, the driver should have "cd-gpio" support.
Signed-off-by: Maxin B. John <maxin.john@xxxxxxxx>
---
drivers/mmc/host/sdhci.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 51bbba4..3347864 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -2131,10 +2131,18 @@ static void sdhci_timeout_timer(unsigned long data)
spin_lock_irqsave(&host->lock, flags);
if (host->mrq) {
+ /*
+ * If the driver doesn't implement proper card detection,
+ * we shouldn't flood the console with Timeout error messages.
+ */
+ if (host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION)
+ goto data_check;
+
pr_err("%s: Timeout waiting for hardware "
"interrupt.\n", mmc_hostname(host->mmc));
sdhci_dumpregs(host);
+data_check:
if (host->data) {
host->data->error = -ETIMEDOUT;
sdhci_finish_data(host);
--
1.7.10.4
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