Some controllers can't handle SDIO IRQ properly. Give a way to
disable it.
Signed-off-by: Olof Johansson <olof@xxxxxxxxx>
---
drivers/mmc/host/sdhci.c | 6 +++++-
include/linux/mmc/sdhci.h | 2 ++
2 files changed, 7 insertions(+), 1 deletions(-)
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index c0094c1..98f3d3d 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -1871,7 +1871,10 @@ int sdhci_add_host(struct sdhci_host *host)
mmc->f_min = host->max_clk / SDHCI_MAX_DIV_SPEC_200;
mmc->f_max = host->max_clk;
- mmc->caps |= MMC_CAP_SDIO_IRQ;
+ mmc->caps = 0;
+
+ if (!(host->quirks & SDHCI_QUIRK_NO_SDIO_IRQ))
+ mmc->caps |= MMC_CAP_SDIO_IRQ;
/*
* A controller may support 8-bit width, but the board itself
diff --git a/include/linux/mmc/sdhci.h b/include/linux/mmc/sdhci.h
index dfb2106..97d547e 100644
--- a/include/linux/mmc/sdhci.h
+++ b/include/linux/mmc/sdhci.h
@@ -85,6 +85,8 @@ struct sdhci_host {
#define SDHCI_QUIRK_NO_HISPD_BIT (1<<29)
/* Controller treats ADMA descriptors with length 0000h incorrectly */
#define SDHCI_QUIRK_BROKEN_ADMA_ZEROLEN_DESC (1<<30)
+/* Controller should not use SDIO IRQ */
+#define SDHCI_QUIRK_NO_SDIO_IRQ (1<<31)
int irq; /* Device IRQ */
void __iomem *ioaddr; /* Mapped address */
--
1.7.3.GIT
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