From: Carlo Caione <carlo@xxxxxxxxxxxx>
This patch introduce a new MMC_CAP2_NO_SDIO cap used to tell the mmc
core to not send SDIO specific commands.
Signed-off-by: Carlo Caione <carlo@xxxxxxxxxxxx>
---
drivers/mmc/core/core.c | 7 +++++++
include/linux/mmc/host.h | 1 +
2 files changed, 8 insertions(+)
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index 2e8b24d..90b028e 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -204,6 +204,13 @@ static void __mmc_start_request(struct mmc_host *host, struct mmc_request *mrq)
return;
}
+ /* We do not support SDIO commands */
+ if (mmc_is_io_op(mrq->cmd->opcode) && host->caps2 & MMC_CAP2_NO_SDIO) {
+ mrq->cmd->error = -EINVAL;
+ mmc_request_done(host, mrq);
+ return;
+ }
+
/*
* For sdio rw commands we must wait for card busy otherwise some
* sdio devices won't work properly.
diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h
index 8673ffe..cf6d0bb 100644
--- a/include/linux/mmc/host.h
+++ b/include/linux/mmc/host.h
@@ -289,6 +289,7 @@ struct mmc_host {
#define MMC_CAP2_HSX00_1_2V (MMC_CAP2_HS200_1_2V_SDR | MMC_CAP2_HS400_1_2V)
#define MMC_CAP2_SDIO_IRQ_NOTHREAD (1 << 17)
#define MMC_CAP2_NO_WRITE_PROTECT (1 << 18) /* No physical write protect pin, assume that card is always read-write */
+#define MMC_CAP2_NO_SDIO (1 << 19) /* Do not send SDIO commands during initialization */
mmc_pm_flag_t pm_caps; /* supported pm features */
--
2.5.0
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